1. Product Title
0445120058 New Aftermarket Common Rail Injector fits Komatsu PC200-8 Cummins QSB 6.7 – GOTTO PARTS
2. Long Description
Product Specifications:
Engineered to conquer the brutal mechanical loads of heavy excavation and continuous industrial site operations, the 0445120058 is a premium aftermarket Common Rail Fuel Injector. Precision-calibrated for the powerhouse Cummins ISB/QSB 6.7 and Komatsu SAA6D107E-1 Tier 3 diesel engines (the highly reliable 24V powerplants driving PC200-8/PC220-8 excavators, WA320-6 wheel loaders, and robust construction machinery), this component aggressively eliminates rough engine idling, poor fuel economy, and sudden power loss under peak hydraulic breakout force. Built to exact OEM specifications with advanced high-stress metallurgy and precise internal flow dynamics, it ensures a true plug-and-play installation. Heavy equipment fleet managers can completely bypass expensive dealership diagnostic delays, instantly restoring optimal fuel atomization and maximized digging torque to keep large-scale earthmoving operations strictly on schedule.
📊 Part Number Cross Reference
(Data verified via global catalog search – Extensive Interchangeability)
| Manufacturer Ref (Bosch Style) | Original Equipment (Cummins / Komatsu) |
| 0445120058 | 4976281 / 4939061 (Cummins) |
| 0986435508 | 6745-11-3102 / 6745-11-3100 (Komatsu) |
🚛 Fits Applications (Engine & Vehicle)
(Verified application list)
| Make | Model / Application | Engine Size | Year | Engine Code & Specs |
| Komatsu | PC200-8, PC220-8, WA320-6 | 6.7L | Various | SAA6D107E-1, Tier 3 |
| Cummins | Industrial & Construction | 6.7L | 2007-Up | ISB 6.7, QSB 6.7, 24V |
👨🔧 Tech Notes & Installation Guide (FAQ)
Q: Why should I replace the full set of 6 injectors on my QSB 6.7 / SAA6D107E-1 engine?
A: Operating heavy excavators or industrial machinery with a degraded injector causes massive common rail pressure drops and severe cylinder washing. This directly results in violent engine stalling under heavy digging or lifting payloads, increased exhaust emissions, and a critical loss of earthmoving power. We highly recommend utilizing our Volume Discounts to install a fully synchronized set of 6 units to ensure perfectly matched cylinder firing and restore maximum factory torque.
Q: Does the 0445120058 injector require IMA coding?
A: No. This unit is strictly calibrated on advanced DCI test benches to perfectly match official OEM nominal flow data. Because its physical delivery quantities are tightly controlled within standard factory tolerances, your heavy equipment’s ECU will utilize its built-in self-adaptive learning (fuel trim) to automatically synchronize the injection. You get a true plug-and-play installation without needing manual dealer trim code entry.
Q: What is the critical cleaning step before installation?
A: Construction and earthmoving environments expose fuel systems to extreme dust and abrasive contaminants. You must thoroughly flush the entire high-pressure fuel rail system and install brand-new OEM-spec 5-micron fuel filters before cranking the engine to prevent immediate internal valve scoring and firmly protect your warranty.
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⚖️ Legal Disclaimer
Part numbers, OE numbers, and brand names mentioned above are for reference and identification purposes only. This product is a compatible aftermarket replacement part and is NOT manufactured, sponsored, or affiliated with the original equipment manufacturers.
