As a source factory and direct exporter, we support customized development of various engine cylinder liners. Our precision manufacturing ensures perfect fit and durability for demanding construction environments.
Komatsu PC200-8 Cylinder Liner | Caterpillar E320D Liner Sleeve | Isuzu 4HK1 Engine Cylinder Sleeve | Yanmar 4TNV98 Custom Liner
| Brand | Model / Machine | Part Number (Standard) | Part Number (Search-Friendly) | Product Name |
|---|---|---|---|---|
| Komatsu | Excavator / Wheel Loader | 421-03-31181 | 4210331181 | Radiator Assembly |
| Komatsu | Excavator | 7861-92-4800 | 7861924800 | Float Switch |
1. Precision engineered for use in heavy-duty excavators and construction machinery.
2. High-strength materials ensure long service life in extreme temperature conditions.
3. Exact OEM specifications 421-03-31181 and 7861-92-4800 for seamless installation.
4. Superior cooling efficiency for Komatsu engine protection and performance stability.
5. Quality replacement solution to solve overheating and sensor failure issues.
Honour Time Machinery Limited specializes in high-end engine components for global brands including Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai.
Cooling & Electrical
| Category | Components Available |
|---|---|
| Engine Core Parts | Liner Kit, Piston, Piston Ring, Crankshaft, Cylinder Block, Cylinder Head, Connecting Rod |
| Sealing & Bearings | Gasket Kit, Gasket Head, Engine Bearing, Main Bearing, Con Rod Bearing, Thrust Washer |
| Fuel System | Diesel Pump, Fuel Injector, Nozzle, Valve Guide, Valve Seat |
| Radiator, Water Pump, Oil Pump, Fan Cooling, Monitor, Pressure Switch, Flameout Solenoid, Accelerator Motor, Transmitter | |
| Air & Turbo | Turbocharger, Main Valve, Belt |
We provide parts for the following engine models and brands:
| Brand | Compatible Models |
|---|---|
| Komatsu | 3D82, 3D84, 4D105, 6D95, 6D108, 6D110, 4D84, 4D95, 6D102, 6D105, 6D114, 6D170 |
| KOBELCO | J05E, 6D34T, 6D16, J08E, 6D22T, 6D24T, 6D16T, 6D34 |
| CATERPILLAR | 3114, 3116, C4, C6, 3064T, S6K, C7, C-9, C13 |
| Mitsubishi | 4D34, 4D24, K4M, S3Q2, 6D16, 6D24, S4KT, 6D40 |
| ISUZU | 3LD1, 4LE1, 4BG1, 4HK1, 6SD1, 6WG1, 4LE2, 4JB1, 6BG1, 6HK1, 6WF1 |
| Yanmar | 4D88E, 4TNE84, 4TNV88, 4TNV94L, 4TNE88, 4TNE94, 4TNV98, 4TNV106 |
| HINO | J05E, J08E, V25C, EF750, P11C, V21C, H06CT, H07D |
| CUMMINS | QSB6.7, QSM11-C, B5.9-C, B3.9-C, QSM11, C8.3-C |
| VOLVO | D6D, D6E, D9E, D12D, D7D, D7E, D12E, D16D |
Cummins QSB6.7 Turbocharger: A turbine-driven induction device that increases an engine's efficiency; installed on the exhaust manifold of excavators.
Komatsu PC200 Float Switch: A sensor used to detect the level of liquid within a tank; installed in the radiator or water tank.
Caterpillar C7 Fuel Injector: A nozzle that sprays fuel into the cylinders; critical for the Caterpillar C7 engine combustion cycle.
Isuzu 6HK1 Crankshaft: The part of the engine that translates reciprocating linear piston motion into rotation; located at the bottom of the cylinder block.
Yanmar 4TNV98 Piston Ring: Metallic rings that fit into grooves on a piston to create a seal; installed on the piston head.
Kubota V2403 Water Pump: Circulates coolant through the engine to prevent overheating; attached to the front of the engine block.
Weichai WP10 Cylinder Head: Sits on top of the cylinder block, housing valves and injectors; essential for sealing the combustion chamber.
Komatsu 6D102 Gasket Kit: A collection of seals to prevent fluid leaks; installed between major engine components.
Caterpillar 320D Monitor: An electronic display for operator feedback; installed in the cabin of the excavator.
Isuzu 4BG1 Valve Guide: A cylindrical piece of metal that holds the engine valves in place; pressed into the cylinder head.
Problem: The operator reported high engine temperatures and coolant loss. Warning light activated for water level.
Solution: Upon inspection, the Radiator (Part No. 421-03-31181) was clogged with debris, and the Float Switch (Part No. 7861-92-4800) was failing to send correct level signals. We replaced both with high-quality OEM alternatives. The cooling system was flushed and refilled with premium coolant. Normal operating temperatures were restored.
Check the radiator for external blockages every 250 working hours.
Inspect electrical sensors and float switches for corrosion at every oil change.
Ensure the engine belt tension is within manufacturer specifications to prevent water pump slippage.
| Model NO. | 421-03-31181 / 7861-92-4800 |
| Application | Excavator / Construction Machinery |
| Certification | ISO9001 / CE Replacement Standard |
| Condition | 100% Brand New High-Quality Replacement |
| Transport Package | Neutral Carton / Export Wooden Case |
| Origin | China Source Factory |
| Production Capacity | 5000 PCS / Year |
| Payment Terms | T/T, Western Union, MoneyGram |
| Delivery Methods | Express (DHL, Fedex, EMS, UPS), Air Freight, Sea Freight |
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About Honour Time Machinery Limited: We are a professional supplier dedicated to providing top-tier engine assemblies and spare parts for world-renowned brands like Cummins, Komatsu, Caterpillar, Isuzu, and Yanmar. Our commitment to quality and direct factory sourcing ensures your heavy machinery stays operational with maximum uptime and performance efficiency.
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