Description
Description
Rebuilt fuel injector set (6 injectors) for Caterpillar C4.4 and compatible Perkins diesel engines.
Each injector in the set is professionally rebuilt, ultrasonically cleaned, calibrated, and flow tested to OEM Caterpillar specifications. Every injector is verified before shipping to ensure proper fuel delivery, balanced cylinder performance, and long-term reliability.
This injector set is engineered to:
- Restore precise fuel atomization
- Improve throttle response and power delivery
- Reduce excessive smoke and rough idle
- Eliminate common injector balance and fuel delivery issues
- Support consistent fuel flow across all cylinders
Replacing the full set helps ensure even fuel distribution throughout the engine and prevents performance imbalances caused by mismatched injectors. Installing a complete injector set is often recommended to maintain consistent combustion efficiency and dependable engine operation.
This set replaces OEM Caterpillar injector part number 2645A747 and compatible superseded references. Fitment is verified before shipment.
Common Cross References
- 2645A747
- 2645A718
- 10R7671
- 320-0680
- 3200680
- 326-4700
- 3264700
(Exact injector supplied depends on engine serial number and application — fitment is verified before shipping.)
Compatible Engines
- Caterpillar C4.4
- Caterpillar C4.4 ACERT
- Caterpillar C6.6 (select applications)
- Perkins 1104 Series (select applications)
Commonly used in construction equipment, agricultural machinery, generators, industrial equipment, and off-highway applications.
Commonly installed in:
- Caterpillar 416 Backhoe Loader
- Caterpillar 420 Backhoe Loader
- Caterpillar 924 Wheel Loader
- Caterpillar Telehandlers
- Perkins-powered industrial equipment
- Various Caterpillar and Perkins-powered machines
Need Fitment Confirmation?
📞 Call or text (909) 639-4195
Have your engine serial number ready and we’ll confirm the correct injector set before you order.
When your equipment is down, speed matters. We verify fast and ship fast.
Why Choose This Injector Set?
- 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
- Balanced injector set for consistent cylinder performance
- Built for long-term heavy-duty reliability
- Tested, verified, and engineered for uptime
Core Policy
A core refund is available when your old injectors are 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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