C9 Fuel Injector 10R-9002 242-0857 Common Rail Injector For Caterpillar C9 Engine

The Caterpillar 242-0857 fuel injector is a precision-engineered component designed for the CAT C9 ACERT engine platform.

Built to meet stringent fuel delivery standards, this injector ensures reliable combustion under varying engine loads.

With electronically controlled injection timing and high-pressure delivery, the 242-0857 helps maintain optimal fuel economy, power output, and emissions compliance, even in the most demanding off-highway and construction environments.

Crafted from premium materials and tested for consistent performance under thermal and pressure extremes, this injector is trusted across construction, mining, and industrial power systems. Its advanced solenoid-actuated system ensures precise spray patterns that support efficient combustion and extended injector life.

 

 

Parameter	Details
Part Number	242-0857 (New), Reman: 10R-7224
Engine Compatibility	Caterpillar C9 ACERT
Engine Displacement	9.3 Liters, Inline 6-cylinder
Fuel System Type	HEUI (Hydraulic Electronic Unit Injector)
Operating Pressure	Up to 29,000–30,000 psi (2000 bar)
Actuation Method	Solenoid-controlled electronic unit
Injection Type	Direct injection with optimized spray cone
Injector Body Material	Heat-treated alloy steel
Nozzle Configuration	Multi-hole, fine mist pattern
Emission Standard	Tier 3 / Euro Stage IIIA (depending on build year)

 

 

This injector is purpose-built for the Caterpillar C9 ACERT engine family and is widely used across:

Excavators: CAT 330D, 336D

Wheel Loaders: CAT 950H, 962G

Motor Graders: CAT 140H, 140M

Track Loaders & Dozers

Industrial Power Units & Generators

On-highway Applications: Freightliner, Sterling trucks using CAT C9 engines (2004–2009 models)

Note: Always verify engine serial prefix (e.g., MXS, LEE, NXS) to confirm compatibility.

 

 

Always install using clean, debris-free conditions

Torque injector clamp bolts per OEM specifications

Pre-lube injector o-rings to avoid damage during seating

Requires recalibration using CAT ET diagnostic software after replacement

Replace all sealing washers and gaskets during installation

 

 

Each injector is individually packaged with protective dust caps and sealed in a moisture-proof anti-static bag. Includes batch code, date of manufacture, and serialized traceability label. Optional: installation instruction sheet included upon request.

 

 

 

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