Caterpillar original Common Rail Fuel Injector for Diesel Engines, 8E-8836, fits Caterpillar 793C 793D 3508B 3512B 3512C 3516B 3516C Engines, Excavator Spare Parts Replacement original new injector

Engineered for Caterpillar 3512B diesel engine platforms, the 8E-8836 fuel injector serves as the primary fuel metering device within the combustion system. It receives highly pressurized diesel from the injection pump and, once the calibrated opening pressure is reached, the needle valve lifts to release fuel through precision-machined nozzle holes. The result is ultra-fine atomization and uniform fuel distribution throughout the combustion chamber, promoting complete combustion, maximum thermal efficiency, and consistent power output under extreme operating conditions.

Manufactured from high-strength hardened alloy steel, the injector delivers exceptional wear resistance, high-pressure capability, thermal stability, and corrosion protection, making it suitable for marine and offshore environments and prolonged heavy-load operation. Accurate fuel metering helps reduce fuel consumption and exhaust particulate emissions, while OEM-equivalent dimensions ensure direct fitment without modification. Before shipment, every unit passes spray pattern testing, leakage testing, flow rate verification, response time measurement, and pressure calibration, and each injector is backed by a 12-month warranty.

The 8E-8836 supports CAT 3512B, 3512B HD, generator set, industrial, marine, and oilfield engine variants across the power generation, marine, mining, construction, and oil and gas sectors. Typical installations include diesel generator sets, marine propulsion systems, mining trucks, wheel loaders, bulldozers, excavators, industrial compressors, pumps, and drilling equipment. Cross-referenced to 320-4677 and 326-1640, this OEM-equivalent injector is trusted by maintenance professionals, fleet operators, engine rebuilders, and equipment distributors worldwide.