Caterpillar original Diesel Fuel Injector Assembly 10R-9239 OR-9350 Replacement for OEM compatible parts, fits 3126, 3126B, engines, for excavator and truck repair spare parts original new injector

Sourced to support Caterpillar 3126 series diesel engine maintenance and repair programs, the OR-9350 (also formatted as 0R-9350, 0R9350, OR9350) is a purpose-built hydraulic electronic unit injector (HEUI) for diesel engine service. It is validated for fitment on Caterpillar 3126, 3126B, and 3126E 7.2L inline six-cylinder engines, with compatible applications for selected 3116 engine references per OEM and aftermarket datasets. It supports cross-reference sourcing for replacement part numbers including EX639350, 141-7837, 173-1013, 173-9272, 196-4229, 222-5972, and 169-7410.

Operating as a core component of the HEUI fuel system, the OR-9350 uses high-pressure engine oil to deliver hydraulic actuation force, while the engine’s electronic control module (ECM) precisely modulates injection timing and fuel delivery quantity. Its industrial-grade design includes precision fuel metering, high-pressure atomization, and responsive electronic actuation to support cylinder balance, restore optimal combustion efficiency, improve starting performance and throttle response, and boost fuel delivery reliability for diesel engine operators.

This injector is compatible with a broad range of 3126-powered equipment, including medium-duty trucks, vocational trucks, buses, RVs, fire trucks, ambulances, construction support equipment, marine engines, and industrial diesel power systems. It is available as a single unit, complete six-injector set, or in bulk quantities to serve repair shops, rebuilders, fleet maintenance teams, and aftermarket distributors. All purchasers must verify fitment via engine serial number, original injector tag, and calibration requirements before ordering to prevent compatibility errors.