Description
Description
Rebuilt common rail fuel injector for Caterpillar C7 and C9 diesel engines.
Each injector is professionally rebuilt, ultrasonically cleaned, calibrated, and flow tested to OEM Caterpillar specifications. Every injector is verified before shipping to ensure precise fuel delivery, reliable engine performance, and long service life.
This injector is engineered to:
- Restore precise fuel atomization
- Improve throttle response and power delivery
- Reduce excessive smoke and rough idle
- Eliminate common injector performance issues
- Support consistent combustion and fuel efficiency
Designed for high-pressure common rail fuel systems, this injector helps maintain proper fuel delivery while restoring horsepower, fuel economy, and engine reliability.
This injector replaces OEM Caterpillar injector part number 20R5078 and compatible superseded references. Fitment is verified before shipment.
Common Cross References
- 20R5078
- 387-9434
- 3879434
- 328-2582
- 3282582
- 10R7675
(Exact injector supplied depends on engine serial number and application — fitment is verified before shipping.)
Compatible Engines
- Caterpillar C7
- Caterpillar C7 ACERT
- Caterpillar C9
- Caterpillar C9 ACERT
Commonly used in medium-duty trucks, construction equipment, agricultural equipment, generators, and industrial applications.
Commonly installed in:
- Caterpillar 938 Wheel Loader
- Caterpillar 924 Wheel Loader
- Caterpillar Excavators
- Freightliner Business Class M2
- Sterling Trucks
- Various Caterpillar-powered industrial and vocational applications
Need Fitment Confirmation?
📞 Call or text (909) 639-4195
Have your engine serial number ready and we’ll confirm the correct injector before you order.
When your equipment is down, speed matters. We verify fast and ship fast.
Why Choose This Injector?
- Rebuilt to OEM Caterpillar fuel-flow and spray-pattern specifications
- Fully bench-tested for pressure, leakage, and performance
- Restores horsepower, fuel efficiency, and smooth idle
- Built for long-term heavy-duty reliability
- Tested, verified, and engineered for uptime
Core Policy
A core refund is available when your old injector is returned.
Cores must be received within 30 days of purchase to qualify.
Shipping & Support
- Free UPS Ground shipping
- Expedited shipping available
- Backed by direct Samperio Turbo Rebuild technical support
You’ll speak to diesel experts, not call centers. Reliable support from people who know heavy-duty engines.



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