Caterpillar original Common Rail Diesel Injector for Industrial Machinery 138-8756 C9.3 ENGINE Cross Reference 456-3509, 456-3579 Replacement for OEM 417-3013 original new injector

Precision-engineered for harsh heavy-duty operating conditions, the CAT 138-8756 is a high-pressure common rail diesel injector built for Caterpillar C9.3 series diesel engines. It delivers accurately metered high-pressure fuel directly into the combustion chamber to support optimal combustion efficiency, stable power output, reduced fuel consumption and lower exhaust emissions. Manufactured to strict OEM-equivalent specifications, it acts as a reliable replacement component for Caterpillar heavy equipment across industrial sectors.

It is compatible with all verified C9.3 engine variants, including standard, ACERT, industrial, generator and marine configurations, and fits equipment ranging from CAT 336/340 excavators and 950/962 wheel loaders to 140 motor graders, mining equipment and generator sets. Constructed from hardened alloy steel, it features precision-machined nozzles, OEM-calibrated fuel flow, corrosion resistance and factory testing, with a direct-fit design for simple installation. Compatibility must be confirmed via engine serial number and part number before purchase.

The 138-8756 injector comes with a 12-month warranty and is packed in anti-corrosion industrial export packaging for long-distance global transit. It supports sea, air and express shipping via DHL, UPS, FedEx and TNT, with in-stock units available for fast order fulfillment. It is a trusted injection system solution for construction, mining, power generation, marine and general industrial operations.