Common Rail Injector 0445120236 – Compatible with Bosch for Cummins 6.7 Diesel Engines
When it comes to maintaining peak performance in your Cummins 6.7 diesel engine, the fuel injector is one of the most critical components. The Common Rail Injector 0445120236 , compatible with Bosch, stands out as a premium replacement choice for fleet owners, heavy-duty truck operators, and diesel enthusiasts. This injector is engineered to restore factory-fresh power, fuel economy, and emission compliance.
1. Structural Features and Technical Advantages
The 0445120236 injector is a state-of-the-art solenoid-type common rail injector manufactured to Bosch’s exacting standards. Its design incorporates several engineering innovations that directly translate into real-world benefits:
Premium Solenoid Actuator – Delivers exceptionally fast response times, enabling precise multiple-injection strategies (pilot, main, and post injections) that reduce combustion noise, lower NOx and particulate emissions, and improve throttle response.
Hardened Needle and Nozzle Assembly – Constructed from heat-treated, wear-resistant steel, the needle-and-nozzle pair is lapped to micron-level clearances. This ensures consistent fuel atomization over hundreds of thousands of miles, even under extreme rail pressures exceeding 2,000 bar.
Balanced Hydraulic Force Design – The internal hydraulic circuit is optimized to balance pressure forces on the control valve, which minimizes internal leakage and maintains stable injection quantity across the entire RPM range. This translates into smoother idle, reduced smokey startups, and fewer regeneration cycles for the DPF.
Multi-Layer Filtration Screen – An integrated fine-mesh inlet filter traps microscopic debris that could otherwise abrade the precision-mated components. This proactive protection significantly extends injector service life, especially when running with biodiesel blends or in dusty operating environments.
Corrosion-Resistant Exterior – The injector body features a zinc-nickel plating that withstands under-hood heat, road salt, and moisture ingress, preventing seized fuel return fittings and electrical connector corrosion—two common failure points on older injectors.
100% Bosch-Compatible Dimensional Specs – From the nozzle protrusion to the clamp groove position and electrical connector orientation, every critical dimension matches the OEM Bosch injector. This ensures drop-in fitment without requiring custom machining or harness adapters.
Together, these design attributes deliver superior fuel atomization, consistent engine braking performance, and measurable fuel savings of up to 5–8% compared to worn or aftermarket low-quality injectors.
2. Compatible Vehicle Applications
The Common Rail Injector 0445120236 is specifically calibrated for Cummins 6.7L ISB, ISC, and QSB series engines found in a wide range of on-highway and off-highway applications. Below is a detailed compatibility list:
| Vehicle Category | Specific Models |
|---|
| Pickup Trucks | Dodge Ram 2500 / 3500 (2007.5–2018) with 6.7L Cummins |
| Medium-Duty Trucks | Freightliner M2 106, International Durastar, Kenworth T270/T370, Peterbilt 325/330 |
| School Buses | Thomas Built, Blue Bird, IC Bus with 6.7L Cummins |
| Motorhomes | Class A and Class C diesel pushers built on Freightliner or Spartan chassis |
| Agricultural Equipment | Case IH tractors, New Holland combines, and sprayers using QSB 6.7 power units |
| Construction Machinery | Caterpillar excavators, JLG scissor lifts, and Genie boom lifts equipped with 6.7L Cummins industrial engines |
| Marine | Recreational and commercial marine vessels with Cummins QSB 6.7 marine propulsion engines |
Engine control calibration numbers that pair with this injector include:
Bosch software version: EDC17 and CM2150/CM2200
OEM part number cross-references: 5263310, 5272453, 5283296, 5353138, 5363290, 4374100, 4923693
Always confirm your engine’s calibration ID and the color band on your existing injector before ordering, as calibration variations may exist between model years.
3. Common Failure Symptoms and Installation/Replacement Guidelines
Recognizing a Failing Injector (0445120236)
Early detection of injector problems can prevent costly engine damage. Watch for these tell-tale signs:
Rough Idle and Misfire – The engine may shake noticeably at stoplights, especially when cold.
Hard Starting or Extended Crank Time – A leaky injector drains rail pressure overnight, requiring longer cranking to rebuild pressure.
Excessive Black or White Smoke – Black smoke indicates over-fueling; white smoke often points to a stuck-open injector or poor atomization.
Loss of Power Under Load – The engine hesitates or lacks pulling power when towing or climbing grades.
Increased Fuel Consumption – A jump of 10–15% in fuel usage without any other mechanical change strongly suggests injector wear.
Fuel in Oil / Rising Oil Level – An internal injector leak allows diesel to bypass the piston rings and dilute the engine oil, leading to bearing damage if ignored.
Knocking or Pinging Sounds – Abnormal combustion due to altered spray patterns produces a metallic knocking noise, particularly during acceleration.
Professional Installation Recommendations
While DIY replacement is possible for experienced mechanics, professional installation is highly recommended due to the precision required. Follow these critical steps:
System Depressurization – Always relieve common rail pressure (using a diagnostic scanner or by waiting 30+ minutes after engine shutdown) before loosening any high-pressure connection.
Meticulous Cleaning – Thoroughly clean the injector bore, clamping surfaces, and fuel return lines using a non-fibrous cloth. Any debris entering the injector inlet will cause immediate failure.
New Copper Sealing Washers – Replace the copper crush washer and O-ring seals with the new kit supplied. Never reuse old seals—they work-harden and will not seal properly.
Torque to Specification – Tighten the clamp bolt to 52 N·m (38 ft-lb) and the high-pressure line nut to 28 N·m (21 ft-lb) using a calibrated torque wrench. Over-tightening distorts the injector body; under-tightening causes external leaks.
Electrical Connection – Apply a thin film of dielectric grease inside the connector to prevent moisture ingress and ensure secure locking of the two-pin plug.
ECU Reset and Learn Procedure – After installation, use a diagnostic tool (e.g., Cummins Insite or equivalent) to perform an injector trim code learn. Input the 6-character correction code printed on the new injector into the ECM. This step is mandatory for smooth idle and optimal fuel trim.
Prime the System – Cycle the key without cranking 3–4 times to allow the lift pump to fill the rail and purge air. Then crank the engine in 10-second intervals with a 30-second cooldown to avoid starter overheating.
Leak Check – With the engine running at idle and at 2,000 RPM, inspect all fuel connections for wetness or drips. Repair any leaks immediately—high-pressure fuel is a fire and safety hazard.
4. Why Choose Rsolid Engine Parts as Your Supplier?
At Rsolid engine parts, we understand that diesel engine reliability is non-negotiable. Here’s why thousands of workshops and fleet managers trust us for their injector needs:
Factory-Direct Supply Chain – We source our 0445120236 injectors from ISO/TS 16949-certified manufacturers who use genuine Bosch raw materials and calibration equipment. Every unit is 100% new—never remanufactured or refurbished—and meets or exceeds OEM performance specifications.
Rigorous Multistage Testing – Each injector undergoes a 14-point test regime, including:
Leakage test at 200 bar
Spray pattern visualization at 1,200 bar
Dynamic flow measurement (5 strokes at 2,500 rpm)
Response time and delay measurement
Electrical solenoid resistance and inductance check
All test reports are retained and traceable by batch number.
Competitive Wholesale Pricing – We eliminate middlemen, passing significant savings to our customers without compromising quality. Volume discounts are available for workshops, fleets, and export partners.
Global Express Shipping – With warehouses strategically located, we deliver to the USA, Canada, Europe, Australia, and the Middle East within 3–7 business days. Tracking numbers are provided immediately upon dispatch.
24/7 Technical Support – Our in-house diesel engineers are available via phone, email, or WhatsApp to assist with compatibility questions, installation troubleshooting, or ECM calibration guidance.
Worry-Free Warranty – We stand behind our products with a 12-month / 100,000-mile limited warranty against manufacturing defects. If you encounter any issue, we offer a prompt replacement or full refund, no hassles.
Get in touch with Rsolid engine parts today:
WhatsApp: +8615975376778
Email: amy@rinjector.com
Our team is ready to assist with bulk orders, custom packaging, or urgent emergency shipments. Keep your Cummins 6.7 running like new with the injector that professionals trust—0445120236 from Rsolid engine parts.
