Asia-Pacific Heavy Equipment Repair Center - Dual-Fit Cummins 6BT5.9 Piston Kit Featuring 3957795/6738-31-2111, Liner 3904166, and Ring 3802421

Dual-Fit Confidence: Cummins 6BT5.9 / Komatsu Engine Spares

This specific kit addresses engines used in various equipment, including popular Komatsu Excavators running the Cummins 6BT5.9. The Engine Piston Part Number 3957795 is directly equivalent to the Komatsu Piston Part Number 6738-31-2111 (also 3957795 and 6738312111). Honour Time Machinery Limited is your global source for dual-fit engine components for brands like Cummins, Komatsu, and Caterpillar.

Precision and Sealing: Liner and Piston Ring Details

The durability of your engine relies on the consistent performance of the Cylinder Liner Part Number 3904166 (also 3904166). This liner, paired with the precise Piston Ring Set Part Number 3802421 (also 3802421), ensures maximum compression and minimal oil bypass for the 6BT5.9. We offer the best value on a full Cummins engine overhaul kit price, specializing in heavy duty diesel engine parts and industrial engine spares.

Extensive Inventory and Expert Support

Our core product line is vast, encompassing every necessary diesel engine spare part: Crankshaft Bearings, Connecting Rod Bearings, Thrust Washers, Engine Overhaul Kits, Diesel Fuel Pumps, Injectors, Crankshafts, Turbochargers, Water Pumps, Oil Pumps, Cylinder Blocks, Cylinder Heads, and Connecting Rods. We efficiently cater to equipment from Isuzu, Kubota, Yanmar, and Weichai, providing reliable engine parts international shipping for your construction machinery engine components needs.

Technical Focus: Heavy Machinery Component Glossary

Ten key engine components and their use in specific equipment:

• Cylinder Head Gasket: Seals the top of the Cylinder Block to the Cylinder Head. Example: Isuzu 4BG1 Cylinder Head Gasket.

• Crankshaft (Crank): Converts piston motion into rotational power. Example: Yanmar 4TNV88 Crankshaft.

• Oil Pump: Circulates engine oil under pressure from the oil pan. Example: Kubota V3300 Oil Pump.

• Turbocharger: Boosts engine power by increasing air intake. Example: Cummins QSB6.7 Turbocharger Unit.

• Main Bearing: Supports the crankshaft in the Cylinder Block. Example: Caterpillar C7 Main Bearing Set.

• Connecting Rod Bearing: Bearing for the large end of the Connecting Rod. Example: Komatsu SAA6D107E Connecting Rod Bearing.

• Water Pump: Mounted externally, circulates coolant. Example: Weichai WP12 Water Pump.

• Fuel Injector: Delivers atomized fuel into the combustion chamber. Example: Isuzu 6HK1 Fuel Injector.

• Engine Overhaul Kit: A comprehensive set of components for engine rebuild, including Piston and Liner. Example: Kubota D902 Overhaul Kit.

• Piston Pin: Connects the Piston to the small end of the Connecting Rod. Example: Yanmar 3TNE88 Piston Pin.

Engineering Machinery Fault Scenario and Professional Solution

Equipment Fault: Komatsu PC200-8 Hydraulic Pump Failure

Symptom: A Komatsu PC200-8 excavator (SAA6D107E engine) experiences a sudden and complete loss of hydraulic function in all circuits.

Diagnosis & Solution: While engine-related, this is a hydraulic system failure. The most common cause is catastrophic failure of the main hydraulic pump or, less severely, a failed pump coupling, which links the pump to the engine's Crankshaft.

1. Check the coupling between the engine flywheel/power take-off (PTO) and the hydraulic pump. A sheared coupling requires replacement.

2. If the coupling is intact, the main hydraulic pump itself has likely failed internally due to wear, contamination, or pressure spike.

3. The pump must be fully replaced or professionally rebuilt to factory specifications.

Your Strategic Partner for Engine Spares Wholesale

We are the recognized Source Manufacturer and a key global engine parts supplier for Engine Assemblies and all necessary spare parts. Our comprehensive line includes Cylinder Liner, Piston, Piston Ring, Crankshaft Bearing, Connecting Rod Bearing, Thrust Washer, Overhaul Kit, Diesel Fuel Pump, Injector, Crankshaft, Turbocharger, Water Pump, Oil Pump, Cylinder Block, Cylinder Head, and Connecting Rod. We specialize in components for Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai, catering to clients seeking engine parts wholesale and genuine engine parts supplier quality.

Choose us for high-quality aftermarket engine components and expert service for your 6BT5.9 engine spare parts needs, backed by reliable factory direct engine components supply.

Contact Our Global Sales Team Today!

For swift quotes and ordering for the cross-reference Cummins Piston 3957795 / Komatsu Piston 6738-31-2111, Liner 3904166, and Piston Ring 3802421, contact our sales experts. We are ready to fulfill all your diesel engine spares requirements globally.