As your trusted Source Manufacturer, we offer highly competitive Factory Direct pricing and comprehensive Global Export capabilities. We specialize in the Customized Development of robust Engine Cylinder Liners (3919937) and Pistons (4941396, 3966721), ensuring OE standards for the powerful Cummins L375 engine.
The Cummins L375 Engine demands precision-engineered internal parts for sustained power and efficiency. Our core rebuild kits feature the critical Piston 4941396 (or interchangeable 3966721) and the durable Cylinder Liner 3919937. We also supply the matching Piston Ring Set, ensuring perfect compression seal and longevity for heavy-duty applications, commonly found in Komatsu and Caterpillar equipment.
| Component | Part Number(s) | Keywords |
|---|---|---|
| Piston Assembly | 4941396 / 3966721 (4941396, 3966721) | Cummins L375 Piston |
| Cylinder Liner | 3919937 | Cummins L375 Cylinder Liner 3919937 |
| Piston Ring Set | (Required Component) | L375 Piston Ring Set |
Honour Time Machinery Limited is the trusted source for complete engine assemblies and reliable spare parts for major equipment manufacturers worldwide: Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai. Our comprehensive engine inventory includes: Cylinder Liner (3919937), Piston (4941396), Piston Ring, Main Bearing, Connecting Rod Bearing, Thrust Washer, Engine Overhaul Gasket Kit, Diesel Fuel Pump, Fuel Injector, Crankshaft, Turbocharger, Water Pump, Oil Pump, Engine Block, Cylinder Head, and Connecting Rod.
In-Depth Long-Tail SEO Keywords: Cummins L375 piston 4941396 cylinder liner 3919937 Cummins L375 piston 3966721 replacement cost L375 engine piston ring set price Cummins L375 engine overhaul gasket kit Komatsu PC450-8 connecting rod bearing set Caterpillar C15 engine turbocharger upgrade Isuzu 6HK1 engine fuel injector price list Kubota V3307 main bearing thrust washer kit Yanmar 4TNV98 diesel fuel pump assembly Weichai WD615 engine cylinder head repair Engine block and cylinder liner machining service Global export of heavy duty engine parts Cummins L375 crankshaft oil seal replacement High quality piston rings for diesel truck engines Excavator final drive gear kit price Diesel engine water pump wholesale supplier Caterpillar 330D hydraulic pump repair parts Isuzu engine piston pin retaining clip Heavy machinery electrical parts supplier Cummins L375 piston 4941396 price China
Thrust Washer: A flat, semi-circular bearing placed at the end of the Crankshaft to prevent excessive forward/backward (axial) movement. Located in the Engine Block main bearing saddle. (Application: Cummins L375 Engine - Crankshaft Thrust Washer)
Hydraulic Filter (Suction): A coarse filter located in the hydraulic tank before the pump intake to protect the main Hydraulic Pump (HPV) from large contaminants. (Application: Komatsu PC450-8 Excavator - Hydraulic Suction Filter)
Turbocharger Compressor Wheel: The impeller that rapidly draws in and compresses air before sending it to the engine intake. Located on the cold side of the Turbocharger. (Application: Caterpillar C9 Engine - Compressor Wheel)
Fuel Rail: A tube that stores and distributes high-pressure fuel to the individual Fuel Injectors in common rail systems. Mounted on the side of the Cylinder Head/Block. (Application: Isuzu 6UZ1 Engine - Common Rail Fuel Rail)
Final Drive: The last reduction gear set (planetary assembly) that connects the Travel Motor to the track sprocket. Located in the Track Frame. (Application: Kubota KX080 Excavator - Final Drive Assembly)
Valve Seat Insert: A separate ring of hardened metal pressed into the Cylinder Head to provide a wear-resistant sealing surface for the Valves. (Application: Yanmar 4TNV94 Engine - Valve Seat Insert)
Connecting Rod Bolt: The high-strength fastener that secures the Connecting Rod Cap to the rod body. (Application: Weichai WP12 Engine - Connecting Rod Bolt)
Water Pump Impeller: The rotating component inside the Water Pump that forces coolant through the engine. (Application: Cummins 6CT Engine - Water Pump Impeller)
Engine Oil Cooler: A heat exchanger that reduces the temperature of the circulating engine oil. Often located near the Oil Filter or mounted to the Engine Block. (Application: Komatsu SAA6D107E Engine - Oil Cooler)
Boom Cylinder: The largest hydraulic cylinder that raises and lowers the main Boom arm of the excavator. (Application: Caterpillar 349F Excavator - Boom Cylinder)
Equipment/Fault: A heavy-duty truck with a Cummins L375 Engine shows dangerously low oil pressure, particularly when the engine is at operating temperature.
Probable Cause: Low pressure when hot usually indicates excessive clearances within the engine, allowing oil to escape too easily. The most frequent causes are worn Main Bearings or Connecting Rod Bearings, or a failing Oil Pump assembly (loss of prime/worn gears). Worn Piston skirt or cylinder wall (Liner 3919937) wear can also contribute.
Solution: Confirm the pressure reading with a mechanical gauge. If low, check the oil pickup tube and Oil Pump clearance. During a major repair, inspect the Crankshaft Bearings and replace the Piston 4941396 and Cylinder Liner 3919937, along with all associated Bearing Sets, to restore all clearances and ensure adequate oil pressure throughout the engine's service life.
We are committed to providing OE-Level Quality and reliable supply for the Cummins L375 Piston (4941396/3966721) and Liner (3919937) components. Reach out for direct wholesale export prices!
WhatsApp: +8613532379052 | Email:info@parts-sealing.com
English
English