Product Specifications:
Built to conquer steep inclines and massive payload demands, the 0445120238 is an ultra-rugged aftermarket Common Rail Diesel Fuel Injector precisely calibrated for the iconic 5.9L ISB / ETC / ETH (6-cylinder) powerplants. Serving as the vital fuel delivery core for heavy-duty legends like the 2002-2006 Dodge Ram 2500, 3500, and 4×4 pickup trucks, this premium component perfectly mirrors factory flow rates and injection timing. Replacing clogged or failing injectors with this unit instantly cures violent engine shaking, drastically cuts down excessive black exhaust smoke, and restores the raw 220-330 BHP pulling power your truck relies on. Designed as a seamless mechanical upgrade, this injector offers true plug-and-play installation with zero complex ECU coding, completely bypassing expensive dealership diagnostic fees.
📊 Part Number Cross Reference
(Data verified via global catalog search – Extensive Interchangeability)
| Manufacturer Ref (Bosch Style) | Original Equipment (Cummins / Mopar) |
| 0445120238 | 5135790AD / 05135790AD / 05135 790AD |
| 0445120208 / 0445120103 | 5263316 / 05263316 / 5254688 |
| 0445120114 / 0445120032 | 4940051 / 3964273 / 3968158 / 3972887 |
| 0986435505 (Reman) | R5135790AF / R5135790AD |
🚛 Fits Applications (Engine & Vehicle)
(Verified application list)
| Make | Model / Application | Engine Size | Year | Engine Code & Specs |
| Dodge | Ram 2500, 3500, Pickup, 4×4 | 5.9 d | 2002-2006 | ETC, ETH (220-330 BHP) |
| Cummins | Various Commercial Applications | 3.9L / 5.9L | Various | ISB, ISBe, Tector, Pacar |
👨🔧 Tech Notes & Installation Guide
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💰 Why Replace the Full Set?
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The Risk: Leaving a single clogged or worn injector in a high-mileage 6-cylinder 5.9L engine creates extreme fuel pressure spikes and cylinder imbalances. This inevitably leads to severe engine knocking, potential piston melting, and a dangerous loss of pulling power when hauling heavy equipment.
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The Fix: We strongly advise taking advantage of our Volume Discounts to install a completely synchronized set of 6 units. This guarantees perfectly balanced cylinder firing, restoring a smooth, reliable idle and returning your truck to its maximum factory towing capacity.
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✅ Direct Replacement (No Coding Required):
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Rigorously flow-tested on advanced calibration benches, this component delivers true plug-and-play functionality. It requires zero IMA programming, bypassing expensive electronic diagnostic tools and slashing your mechanic’s workshop time.
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⚠️ Critical Cleaning Step:
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Heavy-duty diesel fuel systems are incredibly vulnerable to water contamination and metallic micro-debris. You absolutely must thoroughly flush the entire high-pressure fuel rail and lines prior to installation. Always equip a brand-new 5-micron fuel filter and water separator to protect the delicate internal precision valves from instant destruction.
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🔍 Explore More Heavy Duty Parts:
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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.
