The Komatsu PC45R-8 left the factory with the 3D84E. Where that engine is no longer available, the Komatsu 3D88 is the established replacement - same engine family, same mounting layout, a little more displacement. We stock it new surplus and rebuilt. The Komatsu PC45R-8 is a 4.5-ton class mini excavator from Komatsu's R-8 series. CYLINDER COUNT WARNING: the PC45 class spans both the three-cylinder and the four-cylinder Komatsu engine - confirm from the plate. ENGINE SPECIFICATION. Three cylinder, four cycle, water cooled, vertical in-line. Direct injection, naturally aspirated. Bore and stroke 88 x 90 mm. Displacement 1.642 L (100.2 cu in). Around 36 hp at full rated speed, less in machines governed lower. Dry weight approximately 341 lb (154 kg). Engine as fitted to this machine: Komatsu 3D84E. Production years: 1999-2005. Original rated output: approximately approx. 33-36 hp. WHY THE 3D88 REPLACES THE 3D84E. Komatsu's 3D-series three-cylinder diesels are one family on one architecture - the same 90 mm stroke, the same block design, the same mounting and accessory layout. Only the bore changes: 3D82AE - 82 mm bore, 1.331 L, around 29 hp (Yanmar 3TNV82A) 3D84 / 3D84E - 84 mm bore, 1.496 L, around 33 hp (Yanmar 3TNE84 / 3TNV84) 3D88 / 3D88E - 88 mm bore, 1.642 L, around 36 hp (Yanmar 3TNE88 / 3TNV88) Because the 84 mm and 88 mm engines are built on the same core with the same mounting layout, the 3D88 is the established replacement where a 3D84E is no longer available - a little more displacement and a little more power from the same footprint. Before it ships we confirm the mounting points, bellhousing and SAE housing, flywheel, oil pan clearance, PTO and pump drive, throttle linkage and wiring against your machine. Most of that is external and carries over from the engine you are pulling out. KOMATSU 3D88 AND YANMAR 3TNV88 ARE THE SAME ENGINE. Komatsu's small D-series diesels are Yanmar TNV engines built under the long-standing Komatsu-Yanmar relationship and badged as Komatsu. The Komatsu 3D88 / 3D88E is the Yanmar 3TNV88: same block, same crankshaft, same 88 x 90 mm bore and stroke, same 1.642 L displacement, same architecture. If your data plate reads 3D88E-3, 3D88E-5, 3D88E-6 or 3D88E-7, that is a Komatsu-badged Yanmar 88 mm three-cylinder. This matters commercially because it doubles the pool of engines that can be built to fit your machine. We supply both, and we set the core up with the accessories your Komatsu needs. MECHANICAL OR ELECTRONIC - THIS IS THE ONE THING YOU MUST MATCH. The Komatsu 3D88 spans two fuel systems and they are not interchangeable. MECHANICAL INJECTION uses a mechanical pump and governor - no ECU, no sensors, no wiring harness to match. This is what most machines in the field run and it is our standard stock. ELECTRONIC / COMMON RAIL is ECU-controlled, fitted to machines built to the later emissions standards. We carry both, new surplus and rebuilt. The suffix - 3D88E-3, -5, -6, -7 - does not mean a completely different engine. The core is the same across the family. The suffix tells you the emissions tier, the fuel system, and the accessory package Komatsu specified for that machine. The accessory package is the part that can be changed: the bellhousing, flywheel, oil pan and sump, manifolds, alternator and starter position, pulleys, brackets, PTO and hydraulic pump drive and the throttle linkage are all EXTERNAL components. They bolt on and off, and they carry across from the engine you are removing onto the replacement core. So the working rule is: MATCH THE FUEL SYSTEM, ADAPT THE EXTERNALS. CYLINDER COUNT. The 3D88 is a THREE-cylinder engine, 1.642 L. The 4D88 / 4D88E is a FOUR-cylinder engine, 2.190 L. Same 88 in the name, different engine. Several PC40, PC45, PC50 and PC55-class machines run the four-cylinder 4D88E, not the three-cylinder 3D88E. Read the data plate - do not go by the machine model alone. HOW TO ORDER THE RIGHT ONE. Send us a photo of your engine data plate - the model number, the suffix and the serial - and tell us it is going into a Komatsu PC45R-8. We will confirm the cylinder count and the fuel system, tell you which accessories carry over from your old engine, and quote you on the correct core in new surplus or rebuilt. If what you asked for is not right for the machine, we will say so before we take the order.

We supply the Komatsu 3D88 as the replacement for the 3D84E in the Komatsu WA30-5 - new surplus or rebuilt. Same 3D family, one bore size up, and the external components carry across from the engine you are pulling out. The Komatsu WA30-5 is a compact articulated wheel loader used in landscaping, municipal work and light material handling. Maxiforce application data lists the WA30-5 in its NA, W and X variants against the Yanmar-based Komatsu three-cylinder. ENGINE SPECIFICATION. Three cylinder, four cycle, water cooled, vertical in-line. Direct injection, naturally aspirated. Bore and stroke 88 x 90 mm. Displacement 1.642 L (100.2 cu in). Around 36 hp at full rated speed, less in machines governed lower. Dry weight approximately 341 lb (154 kg). Engine as fitted to this machine: Komatsu 3D84E / 3D84N-2. Production years: 1998-2005. Original rated output: approximately approx. 33 hp. WHY THE 3D88 REPLACES THE 3D84E. Komatsu's 3D-series three-cylinder diesels are one family on one architecture - the same 90 mm stroke, the same block design, the same mounting and accessory layout. Only the bore changes: 3D82AE - 82 mm bore, 1.331 L, around 29 hp (Yanmar 3TNV82A) 3D84 / 3D84E - 84 mm bore, 1.496 L, around 33 hp (Yanmar 3TNE84 / 3TNV84) 3D88 / 3D88E - 88 mm bore, 1.642 L, around 36 hp (Yanmar 3TNE88 / 3TNV88) Because the 84 mm and 88 mm engines are built on the same core with the same mounting layout, the 3D88 is the established replacement where a 3D84E is no longer available - a little more displacement and a little more power from the same footprint. Before it ships we confirm the mounting points, bellhousing and SAE housing, flywheel, oil pan clearance, PTO and pump drive, throttle linkage and wiring against your machine. Most of that is external and carries over from the engine you are pulling out. KOMATSU 3D88 AND YANMAR 3TNV88 ARE THE SAME ENGINE. Komatsu's small D-series diesels are Yanmar TNV engines built under the long-standing Komatsu-Yanmar relationship and badged as Komatsu. The Komatsu 3D88 / 3D88E is the Yanmar 3TNV88: same block, same crankshaft, same 88 x 90 mm bore and stroke, same 1.642 L displacement, same architecture. If your data plate reads 3D88E-3, 3D88E-5, 3D88E-6 or 3D88E-7, that is a Komatsu-badged Yanmar 88 mm three-cylinder. This matters commercially because it doubles the pool of engines that can be built to fit your machine. We supply both, and we set the core up with the accessories your Komatsu needs. MECHANICAL OR ELECTRONIC - THIS IS THE ONE THING YOU MUST MATCH. The Komatsu 3D88 spans two fuel systems and they are not interchangeable. MECHANICAL INJECTION uses a mechanical pump and governor - no ECU, no sensors, no wiring harness to match. This is what most machines in the field run and it is our standard stock. ELECTRONIC / COMMON RAIL is ECU-controlled, fitted to machines built to the later emissions standards. We carry both, new surplus and rebuilt. The suffix - 3D88E-3, -5, -6, -7 - does not mean a completely different engine. The core is the same across the family. The suffix tells you the emissions tier, the fuel system, and the accessory package Komatsu specified for that machine. The accessory package is the part that can be changed: the bellhousing, flywheel, oil pan and sump, manifolds, alternator and starter position, pulleys, brackets, PTO and hydraulic pump drive and the throttle linkage are all EXTERNAL components. They bolt on and off, and they carry across from the engine you are removing onto the replacement core. So the working rule is: MATCH THE FUEL SYSTEM, ADAPT THE EXTERNALS. CYLINDER COUNT. The 3D88 is a THREE-cylinder engine, 1.642 L. The 4D88 / 4D88E is a FOUR-cylinder engine, 2.190 L. Same 88 in the name, different engine. Several PC40, PC45, PC50 and PC55-class machines run the four-cylinder 4D88E, not the three-cylinder 3D88E. Read the data plate - do not go by the machine model alone. WHAT WE NEED FROM YOU. A photo of the engine data plate - model, suffix, serial - and confirmation that it is going into a Komatsu WA30-5. From that we work out the cylinder count and the fuel system, tell you what carries across from the old engine, and price you on the right core. New surplus and rebuilt both available.

The Komatsu WA50-6 left the factory with the 3D84E. Where that engine is no longer available, the Komatsu 3D88 is the established replacement - same engine family, same mounting layout, a little more displacement. We stock it new surplus and rebuilt. The Komatsu WA50-6 is a compact articulated wheel loader used for material handling, snow removal and light construction work. Maxiforce application data lists the WA50-6 against the Yanmar-based Komatsu three-cylinder. ENGINE SPECIFICATION. Three cylinder, four cycle, water cooled, vertical in-line. Direct injection, naturally aspirated. Bore and stroke 88 x 90 mm. Displacement 1.642 L (100.2 cu in). Around 36 hp at full rated speed, less in machines governed lower. Dry weight approximately 341 lb (154 kg). Engine as fitted to this machine: Komatsu 3D84E. Production years: 2005-2015. Original rated output: approximately approx. 33-36 hp. WHY THE 3D88 REPLACES THE 3D84E. Komatsu's 3D-series three-cylinder diesels are one family on one architecture - the same 90 mm stroke, the same block design, the same mounting and accessory layout. Only the bore changes: 3D82AE - 82 mm bore, 1.331 L, around 29 hp (Yanmar 3TNV82A) 3D84 / 3D84E - 84 mm bore, 1.496 L, around 33 hp (Yanmar 3TNE84 / 3TNV84) 3D88 / 3D88E - 88 mm bore, 1.642 L, around 36 hp (Yanmar 3TNE88 / 3TNV88) Because the 84 mm and 88 mm engines are built on the same core with the same mounting layout, the 3D88 is the established replacement where a 3D84E is no longer available - a little more displacement and a little more power from the same footprint. Before it ships we confirm the mounting points, bellhousing and SAE housing, flywheel, oil pan clearance, PTO and pump drive, throttle linkage and wiring against your machine. Most of that is external and carries over from the engine you are pulling out. KOMATSU 3D88 AND YANMAR 3TNV88 ARE THE SAME ENGINE. Komatsu's small D-series diesels are Yanmar TNV engines built under the long-standing Komatsu-Yanmar relationship and badged as Komatsu. The Komatsu 3D88 / 3D88E is the Yanmar 3TNV88: same block, same crankshaft, same 88 x 90 mm bore and stroke, same 1.642 L displacement, same architecture. If your data plate reads 3D88E-3, 3D88E-5, 3D88E-6 or 3D88E-7, that is a Komatsu-badged Yanmar 88 mm three-cylinder. This matters commercially because it doubles the pool of engines that can be built to fit your machine. We supply both, and we set the core up with the accessories your Komatsu needs. MECHANICAL OR ELECTRONIC - THIS IS THE ONE THING YOU MUST MATCH. The Komatsu 3D88 spans two fuel systems and they are not interchangeable. MECHANICAL INJECTION uses a mechanical pump and governor - no ECU, no sensors, no wiring harness to match. This is what most machines in the field run and it is our standard stock. ELECTRONIC / COMMON RAIL is ECU-controlled, fitted to machines built to the later emissions standards. We carry both, new surplus and rebuilt. The suffix - 3D88E-3, -5, -6, -7 - does not mean a completely different engine. The core is the same across the family. The suffix tells you the emissions tier, the fuel system, and the accessory package Komatsu specified for that machine. The accessory package is the part that can be changed: the bellhousing, flywheel, oil pan and sump, manifolds, alternator and starter position, pulleys, brackets, PTO and hydraulic pump drive and the throttle linkage are all EXTERNAL components. They bolt on and off, and they carry across from the engine you are removing onto the replacement core. So the working rule is: MATCH THE FUEL SYSTEM, ADAPT THE EXTERNALS. CYLINDER COUNT. The 3D88 is a THREE-cylinder engine, 1.642 L. The 4D88 / 4D88E is a FOUR-cylinder engine, 2.190 L. Same 88 in the name, different engine. Several PC40, PC45, PC50 and PC55-class machines run the four-cylinder 4D88E, not the three-cylinder 3D88E. Read the data plate - do not go by the machine model alone. WHAT WE NEED FROM YOU. A photo of the engine data plate - model, suffix, serial - and confirmation that it is going into a Komatsu WA50-6. From that we work out the cylinder count and the fuel system, tell you what carries across from the old engine, and price you on the right core. New surplus and rebuilt both available.

The 3D84E in your Komatsu PC25-1 is getting hard to source. The 3D88 replaces it - same block architecture, same 90 mm stroke, same mounting layout, 1.642 L instead of 1.496 L. We carry it new surplus and rebuilt. The Komatsu PC25-1 is a 2.5-ton class mini excavator, a long-serving machine in US rental and utility fleets. A mechanical-injection machine of an older generation, and a common candidate for a replacement core. ENGINE SPECIFICATION. Three cylinder, four cycle, water cooled, vertical in-line. Direct injection, naturally aspirated. Bore and stroke 88 x 90 mm. Displacement 1.642 L (100.2 cu in). Around 36 hp at full rated speed, less in machines governed lower. Dry weight approximately 341 lb (154 kg). Engine as fitted to this machine: Komatsu 3D84-2. Production years: 1993-2000. Original rated output: approximately approx. 27 hp. WHY THE 3D88 REPLACES THE 3D84E. Komatsu's 3D-series three-cylinder diesels are one family on one architecture - the same 90 mm stroke, the same block design, the same mounting and accessory layout. Only the bore changes: 3D82AE - 82 mm bore, 1.331 L, around 29 hp (Yanmar 3TNV82A) 3D84 / 3D84E - 84 mm bore, 1.496 L, around 33 hp (Yanmar 3TNE84 / 3TNV84) 3D88 / 3D88E - 88 mm bore, 1.642 L, around 36 hp (Yanmar 3TNE88 / 3TNV88) Because the 84 mm and 88 mm engines are built on the same core with the same mounting layout, the 3D88 is the established replacement where a 3D84E is no longer available - a little more displacement and a little more power from the same footprint. Before it ships we confirm the mounting points, bellhousing and SAE housing, flywheel, oil pan clearance, PTO and pump drive, throttle linkage and wiring against your machine. Most of that is external and carries over from the engine you are pulling out. KOMATSU 3D88 AND YANMAR 3TNV88 ARE THE SAME ENGINE. Komatsu's small D-series diesels are Yanmar TNV engines built under the long-standing Komatsu-Yanmar relationship and badged as Komatsu. The Komatsu 3D88 / 3D88E is the Yanmar 3TNV88: same block, same crankshaft, same 88 x 90 mm bore and stroke, same 1.642 L displacement, same architecture. If your data plate reads 3D88E-3, 3D88E-5, 3D88E-6 or 3D88E-7, that is a Komatsu-badged Yanmar 88 mm three-cylinder. This matters commercially because it doubles the pool of engines that can be built to fit your machine. We supply both, and we set the core up with the accessories your Komatsu needs. MECHANICAL OR ELECTRONIC - THIS IS THE ONE THING YOU MUST MATCH. The Komatsu 3D88 spans two fuel systems and they are not interchangeable. MECHANICAL INJECTION uses a mechanical pump and governor - no ECU, no sensors, no wiring harness to match. This is what most machines in the field run and it is our standard stock. ELECTRONIC / COMMON RAIL is ECU-controlled, fitted to machines built to the later emissions standards. We carry both, new surplus and rebuilt. The suffix - 3D88E-3, -5, -6, -7 - does not mean a completely different engine. The core is the same across the family. The suffix tells you the emissions tier, the fuel system, and the accessory package Komatsu specified for that machine. The accessory package is the part that can be changed: the bellhousing, flywheel, oil pan and sump, manifolds, alternator and starter position, pulleys, brackets, PTO and hydraulic pump drive and the throttle linkage are all EXTERNAL components. They bolt on and off, and they carry across from the engine you are removing onto the replacement core. So the working rule is: MATCH THE FUEL SYSTEM, ADAPT THE EXTERNALS. CYLINDER COUNT. The 3D88 is a THREE-cylinder engine, 1.642 L. The 4D88 / 4D88E is a FOUR-cylinder engine, 2.190 L. Same 88 in the name, different engine. Several PC40, PC45, PC50 and PC55-class machines run the four-cylinder 4D88E, not the three-cylinder 3D88E. Read the data plate - do not go by the machine model alone. GETTING IT RIGHT FIRST TIME. We have supplied Komatsu and Yanmar TNV engines into US equipment for over five years, and every order gets cross-referenced against the machine's data plate before it ships. Send us the plate off your PC25-1 and we will confirm the fuel system, tell you which accessories transfer, and quote you - new surplus or rebuilt.

Before you order an engine for a Komatsu SK714-5, check the cylinder count - this class spans three-cylinder and four-cylinder Komatsu engines. Where it is the three-cylinder 3D84E, the 3D88 is the established replacement, and we stock it new surplus and rebuilt. The Komatsu SK714-5 is a compact skid steer loader running a 0.35 cubic metre bucket with around 1,716 daN of breakout force and an operating weight near 2,530 kg. CYLINDER COUNT WARNING: SK-series machines span three- and four-cylinder engines - confirm from the data plate. ENGINE SPECIFICATION. Three cylinder, four cycle, water cooled, vertical in-line. Direct injection, naturally aspirated. Bore and stroke 88 x 90 mm. Displacement 1.642 L (100.2 cu in). Around 36 hp at full rated speed, less in machines governed lower. Dry weight approximately 341 lb (154 kg). Engine as fitted to this machine: Komatsu 3D84E. Production years: 2010-2020. Original rated output: approximately approx. 47 hp. WHY THE 3D88 REPLACES THE 3D84E. Komatsu's 3D-series three-cylinder diesels are one family on one architecture - the same 90 mm stroke, the same block design, the same mounting and accessory layout. Only the bore changes: 3D82AE - 82 mm bore, 1.331 L, around 29 hp (Yanmar 3TNV82A) 3D84 / 3D84E - 84 mm bore, 1.496 L, around 33 hp (Yanmar 3TNE84 / 3TNV84) 3D88 / 3D88E - 88 mm bore, 1.642 L, around 36 hp (Yanmar 3TNE88 / 3TNV88) Because the 84 mm and 88 mm engines are built on the same core with the same mounting layout, the 3D88 is the established replacement where a 3D84E is no longer available - a little more displacement and a little more power from the same footprint. Before it ships we confirm the mounting points, bellhousing and SAE housing, flywheel, oil pan clearance, PTO and pump drive, throttle linkage and wiring against your machine. Most of that is external and carries over from the engine you are pulling out. KOMATSU 3D88 AND YANMAR 3TNV88 ARE THE SAME ENGINE. Komatsu's small D-series diesels are Yanmar TNV engines built under the long-standing Komatsu-Yanmar relationship and badged as Komatsu. The Komatsu 3D88 / 3D88E is the Yanmar 3TNV88: same block, same crankshaft, same 88 x 90 mm bore and stroke, same 1.642 L displacement, same architecture. If your data plate reads 3D88E-3, 3D88E-5, 3D88E-6 or 3D88E-7, that is a Komatsu-badged Yanmar 88 mm three-cylinder. This matters commercially because it doubles the pool of engines that can be built to fit your machine. We supply both, and we set the core up with the accessories your Komatsu needs. MECHANICAL OR ELECTRONIC - THIS IS THE ONE THING YOU MUST MATCH. The Komatsu 3D88 spans two fuel systems and they are not interchangeable. MECHANICAL INJECTION uses a mechanical pump and governor - no ECU, no sensors, no wiring harness to match. This is what most machines in the field run and it is our standard stock. ELECTRONIC / COMMON RAIL is ECU-controlled, fitted to machines built to the later emissions standards. We carry both, new surplus and rebuilt. The suffix - 3D88E-3, -5, -6, -7 - does not mean a completely different engine. The core is the same across the family. The suffix tells you the emissions tier, the fuel system, and the accessory package Komatsu specified for that machine. The accessory package is the part that can be changed: the bellhousing, flywheel, oil pan and sump, manifolds, alternator and starter position, pulleys, brackets, PTO and hydraulic pump drive and the throttle linkage are all EXTERNAL components. They bolt on and off, and they carry across from the engine you are removing onto the replacement core. So the working rule is: MATCH THE FUEL SYSTEM, ADAPT THE EXTERNALS. CYLINDER COUNT. The 3D88 is a THREE-cylinder engine, 1.642 L. The 4D88 / 4D88E is a FOUR-cylinder engine, 2.190 L. Same 88 in the name, different engine. Several PC40, PC45, PC50 and PC55-class machines run the four-cylinder 4D88E, not the three-cylinder 3D88E. Read the data plate - do not go by the machine model alone. TALK TO US FIRST. The fastest way to get the right engine for a Komatsu SK714-5 is to send us the data plate and tell us the machine. We confirm cylinder count and fuel system, set the core up with the accessories your machine needs, and quote you - new surplus or rebuilt, and we can supply the equivalent Yanmar 3TNV88 core as well.

We supply the Komatsu 3D88 as the replacement for the 3D84E in the Komatsu GC50-1 - new surplus or rebuilt. Same 3D family, one bore size up, and the external components carry across from the engine you are pulling out. The Komatsu GC50-1 is a road cutter used in pavement removal and surface preparation. Machines like this work their engine at sustained rpm under heavy cutting load, which makes the correct variable-speed governor specification important. ENGINE SPECIFICATION. Three cylinder, four cycle, water cooled, vertical in-line. Direct injection, naturally aspirated. Bore and stroke 88 x 90 mm. Displacement 1.642 L (100.2 cu in). Around 36 hp at full rated speed, less in machines governed lower. Dry weight approximately 341 lb (154 kg). Engine as fitted to this machine: Komatsu 3D84E. Production years: 1995-2005. Original rated output: approximately approx. 33 hp. WHY THE 3D88 REPLACES THE 3D84E. Komatsu's 3D-series three-cylinder diesels are one family on one architecture - the same 90 mm stroke, the same block design, the same mounting and accessory layout. Only the bore changes: 3D82AE - 82 mm bore, 1.331 L, around 29 hp (Yanmar 3TNV82A) 3D84 / 3D84E - 84 mm bore, 1.496 L, around 33 hp (Yanmar 3TNE84 / 3TNV84) 3D88 / 3D88E - 88 mm bore, 1.642 L, around 36 hp (Yanmar 3TNE88 / 3TNV88) Because the 84 mm and 88 mm engines are built on the same core with the same mounting layout, the 3D88 is the established replacement where a 3D84E is no longer available - a little more displacement and a little more power from the same footprint. Before it ships we confirm the mounting points, bellhousing and SAE housing, flywheel, oil pan clearance, PTO and pump drive, throttle linkage and wiring against your machine. Most of that is external and carries over from the engine you are pulling out. KOMATSU 3D88 AND YANMAR 3TNV88 ARE THE SAME ENGINE. Komatsu's small D-series diesels are Yanmar TNV engines built under the long-standing Komatsu-Yanmar relationship and badged as Komatsu. The Komatsu 3D88 / 3D88E is the Yanmar 3TNV88: same block, same crankshaft, same 88 x 90 mm bore and stroke, same 1.642 L displacement, same architecture. If your data plate reads 3D88E-3, 3D88E-5, 3D88E-6 or 3D88E-7, that is a Komatsu-badged Yanmar 88 mm three-cylinder. This matters commercially because it doubles the pool of engines that can be built to fit your machine. We supply both, and we set the core up with the accessories your Komatsu needs. MECHANICAL OR ELECTRONIC - THIS IS THE ONE THING YOU MUST MATCH. The Komatsu 3D88 spans two fuel systems and they are not interchangeable. MECHANICAL INJECTION uses a mechanical pump and governor - no ECU, no sensors, no wiring harness to match. This is what most machines in the field run and it is our standard stock. ELECTRONIC / COMMON RAIL is ECU-controlled, fitted to machines built to the later emissions standards. We carry both, new surplus and rebuilt. The suffix - 3D88E-3, -5, -6, -7 - does not mean a completely different engine. The core is the same across the family. The suffix tells you the emissions tier, the fuel system, and the accessory package Komatsu specified for that machine. The accessory package is the part that can be changed: the bellhousing, flywheel, oil pan and sump, manifolds, alternator and starter position, pulleys, brackets, PTO and hydraulic pump drive and the throttle linkage are all EXTERNAL components. They bolt on and off, and they carry across from the engine you are removing onto the replacement core. So the working rule is: MATCH THE FUEL SYSTEM, ADAPT THE EXTERNALS. CYLINDER COUNT. The 3D88 is a THREE-cylinder engine, 1.642 L. The 4D88 / 4D88E is a FOUR-cylinder engine, 2.190 L. Same 88 in the name, different engine. Several PC40, PC45, PC50 and PC55-class machines run the four-cylinder 4D88E, not the three-cylinder 3D88E. Read the data plate - do not go by the machine model alone. TALK TO US FIRST. The fastest way to get the right engine for a Komatsu GC50-1 is to send us the data plate and tell us the machine. We confirm cylinder count and fuel system, set the core up with the accessories your machine needs, and quote you - new surplus or rebuilt, and we can supply the equivalent Yanmar 3TNV88 core as well.

For the Komatsu PC30FR-2, the 3D84E it was built with and the 3D88 we sell are the same engine family - only the bore changes. That is why the 88 is the standard replacement. We stock it new surplus and rebuilt, and we can supply the equivalent Yanmar 3TNV88 core as well. The Komatsu PC30FR-2 is a 3-ton class front-reduced mini excavator built to work close to obstacles. Note that machines in this class span the 82 mm and 84 mm bores - confirm which from the data plate before ordering. ENGINE SPECIFICATION. Three cylinder, four cycle, water cooled, vertical in-line. Direct injection, naturally aspirated. Bore and stroke 88 x 90 mm. Displacement 1.642 L (100.2 cu in). Around 36 hp at full rated speed, less in machines governed lower. Dry weight approximately 341 lb (154 kg). Engine as fitted to this machine: Komatsu 3D84E / 3D82AE. Production years: 2000-2008. Original rated output: approximately approx. 29 hp. WHY THE 3D88 REPLACES THE 3D84E. Komatsu's 3D-series three-cylinder diesels are one family on one architecture - the same 90 mm stroke, the same block design, the same mounting and accessory layout. Only the bore changes: 3D82AE - 82 mm bore, 1.331 L, around 29 hp (Yanmar 3TNV82A) 3D84 / 3D84E - 84 mm bore, 1.496 L, around 33 hp (Yanmar 3TNE84 / 3TNV84) 3D88 / 3D88E - 88 mm bore, 1.642 L, around 36 hp (Yanmar 3TNE88 / 3TNV88) Because the 84 mm and 88 mm engines are built on the same core with the same mounting layout, the 3D88 is the established replacement where a 3D84E is no longer available - a little more displacement and a little more power from the same footprint. Before it ships we confirm the mounting points, bellhousing and SAE housing, flywheel, oil pan clearance, PTO and pump drive, throttle linkage and wiring against your machine. Most of that is external and carries over from the engine you are pulling out. KOMATSU 3D88 AND YANMAR 3TNV88 ARE THE SAME ENGINE. Komatsu's small D-series diesels are Yanmar TNV engines built under the long-standing Komatsu-Yanmar relationship and badged as Komatsu. The Komatsu 3D88 / 3D88E is the Yanmar 3TNV88: same block, same crankshaft, same 88 x 90 mm bore and stroke, same 1.642 L displacement, same architecture. If your data plate reads 3D88E-3, 3D88E-5, 3D88E-6 or 3D88E-7, that is a Komatsu-badged Yanmar 88 mm three-cylinder. This matters commercially because it doubles the pool of engines that can be built to fit your machine. We supply both, and we set the core up with the accessories your Komatsu needs. MECHANICAL OR ELECTRONIC - THIS IS THE ONE THING YOU MUST MATCH. The Komatsu 3D88 spans two fuel systems and they are not interchangeable. MECHANICAL INJECTION uses a mechanical pump and governor - no ECU, no sensors, no wiring harness to match. This is what most machines in the field run and it is our standard stock. ELECTRONIC / COMMON RAIL is ECU-controlled, fitted to machines built to the later emissions standards. We carry both, new surplus and rebuilt. The suffix - 3D88E-3, -5, -6, -7 - does not mean a completely different engine. The core is the same across the family. The suffix tells you the emissions tier, the fuel system, and the accessory package Komatsu specified for that machine. The accessory package is the part that can be changed: the bellhousing, flywheel, oil pan and sump, manifolds, alternator and starter position, pulleys, brackets, PTO and hydraulic pump drive and the throttle linkage are all EXTERNAL components. They bolt on and off, and they carry across from the engine you are removing onto the replacement core. So the working rule is: MATCH THE FUEL SYSTEM, ADAPT THE EXTERNALS. CYLINDER COUNT. The 3D88 is a THREE-cylinder engine, 1.642 L. The 4D88 / 4D88E is a FOUR-cylinder engine, 2.190 L. Same 88 in the name, different engine. Several PC40, PC45, PC50 and PC55-class machines run the four-cylinder 4D88E, not the three-cylinder 3D88E. Read the data plate - do not go by the machine model alone. GETTING IT RIGHT FIRST TIME. We have supplied Komatsu and Yanmar TNV engines into US equipment for over five years, and every order gets cross-referenced against the machine's data plate before it ships. Send us the plate off your PC30FR-2 and we will confirm the fuel system, tell you which accessories transfer, and quote you - new surplus or rebuilt.