557-7627 Fuel Injector for Caterpillar C7 C9 Engine

557-7627 Fuel Injector for Caterpillar C7 Equipment

The 557-7627 injector group is used in Caterpillar C7 fuel systems to deliver the required amount of fuel at the correct point in the engine cycle. It is commonly required for fuel-system repair on Caterpillar excavators, wheel loaders, material handlers and other C7-powered equipment.

Caterpillar lists 20R-9079 as a Cat Reman alternative associated with the 557-7627 H1315B injector. New replacement and remanufactured supply conditions should not be treated as identical when requesting a quotation.

Machine model alone is not sufficient for final selection. Confirm the number on the removed injector together with the engine serial number and machine product identification number before ordering.

C7 Engine and Caterpillar Machine References

These models are application references rather than a guarantee for every serial-number range. Fuel-system configuration and injector revisions may differ between machine production versions.

Checks Before Replacing the Injector

Hard starting, uneven engine operation, power loss, excessive smoke or fuel-system fault codes can lead to an injector inspection. These symptoms do not confirm injector failure by themselves because fuel supply restrictions, electrical faults, low actuation pressure and engine mechanical problems can produce similar symptoms.

Diagnostic results should be reviewed before replacement. Installation should follow the applicable Caterpillar service procedure, including fuel-system cleanliness and any injector calibration or trim-code procedure required for the specific engine serial number.

Information Needed for an Accurate Quotation

• Clear photo of the number marked on the removed injector.

• Caterpillar machine model and product identification number.

• C7 engine serial number.

• Photos of the injector body and electrical connection.

• Required quantity.

• New replacement or remanufactured supply preference.

• Destination country and preferred shipping method.