Komatsu Engine Injection Pump – WA380-3 S6D108-1 6221-71-1230
This engine injection pump (OEM Part Number: 6221-71-1230) is a high-quality replacement component designed for Komatsu construction equipment. Manufactured to meet or exceed OEM specifications, it ensures reliable performance and long service life in demanding operating conditions.
Applications
Komatsu WA380-3 wheel loaders powered by the S6D108-1 six-cylinder diesel engine. The injection pump meters and delivers high-pressure fuel to each injector; its calibration determines engine power, fuel consumption and smoke levels. The same pump is used on other machines powered by S6D108 series engines – verify your engine serial number before ordering.
Machine & Engine Compatibility
- Machine: Komatsu WA380-3 Wheel Loader
- Engine: Komatsu S6D108-1 six-cylinder diesel engine
- Primary Part Number: 6221-71-1230
We also supply injection pumps, nozzles, plungers and fuel system components for other Komatsu engines including SAA6D107, SAA6D114 and SAA6D125. Send us your machine model and serial number and our team will confirm the correct part.
Technical Specifications
- Product Type: Engine Injection Pump
- Part Number: 6221-71-1230
- Quality: OEM specification
- Condition: New
Usage Notes
- Injection timing is critical for power, fuel economy and emissions – have the installation timed by a qualified technician.
- Confirm the part number and rotation direction against your engine serial number before ordering.
- Bleed all air from the fuel system before cranking the engine.
- Contaminated fuel is the main cause of injection pump failure – always install new fuel filters with the new pump.
Installation Guide
- Clean the pump area and all fuel line connections thoroughly before starting work.
- Disconnect the battery and cap all open fuel lines immediately to keep dirt out of the injection system.
- Remove the old pump following the service manual, marking the position of the timing marks and drive gear.
- Transfer the timing setting: align the injection pump drive gear timing marks exactly as specified.
- Install the new pump, meshing the drive gear carefully without forcing.
- Use new O-rings, seals and copper washers on all connections.
- Tighten the mounting bolts to the specified torque values.
- Verify the static injection timing with a dial indicator before starting the engine.
- Bleed the fuel system completely: filters first, then the pump, then the lines.
- Start the engine, check for leaks and confirm smooth running; then verify timing and idle speed.
Reference Price Range
The reference price for this engine injection pump is approximately USD 800 – 2,500 per unit, depending on configuration, availability and shipping destination. Contact our sales team for a precise quotation. Volume discounts are available for fleet operators and repair shops.
Maintenance Tips
- Use only clean, water-free diesel fuel from a trusted source.
- Replace fuel filters at the recommended intervals and drain water from the separator regularly.
- Investigate hard starting, black smoke or rough idle immediately.
- Never open the fuel system without cleaning the connections first.
- Keep spare fuel filters and pump drive seals in stock for critical machines.
Warranty
All products supplied by us are covered by a 12-month warranty against manufacturing defects in materials and workmanship.
Shipping and Delivery
In-stock items ship within 24-48 hours via express freight (DHL, FedEx, or UPS). Standard delivery time is 5-10 business days worldwide.
Why Choose Our Products?
- Direct OEM replacement with guaranteed fitment and performance
- Rigorous quality testing before shipment
- Competitive pricing with factory-direct supply chain
- Technical support available for installation and troubleshooting
- Proven reliability with thousands of units supplied worldwide
