Caterpillar original 7E-8836 Common Rail Fuel Injector, Replacement for OEM 7E-3381, for Caterpillar 3500A 3508 3512 3516 with 7E-3384, Excavator 777B D11N Diesel Parts 4P-9075 original new injector

For industrial maintenance teams, equipment fleet operators and power generation facility managers sourcing reliable Caterpillar-compatible fuel system components, the CAT 7E-8836 high-pressure direct fuel injector is engineered to meet strict OEM technical standards. It serves as a direct replacement for cross-reference part numbers 326-4432 and 3264432, and is compatible with CAT 3512A, 3512B, 3512C, 3508 and 3516 diesel engine configurations across heavy-duty generator set, industrial power module and marine propulsion lineups.

Operating as a precision fuel metering device within the diesel injection system, the 7E-8836 follows a structured injection cycle: high-pressure fuel delivery, pressure build-up, needle valve activation, atomized spray into the combustion chamber, and immediate post-injection closure to prevent leakage. Made from high-strength alloy steel with a precision-machined nozzle, it delivers consistent fuel delivery, optimized spray patterns, corrosion and high temperature resistance, improved fuel economy, reduced emissions and extended service life under heavy-load conditions.

This injector is engineered for reliable operation across harsh, demanding operating environments, supporting equipment including diesel generator sets, marine vessels, mining and construction machinery, oilfield equipment, offshore platforms and emergency power systems. Its wear-resistant, OEM-grade design reduces unplanned downtime and long-term operating costs for owners of Caterpillar-powered heavy-duty industrial equipment.