Caterpillar original Fuel Injector 10R-1303 Replacement for OEM, Diesel Engine Accessories for Caterpillar C3500B 3516B 3406E 3512B, 992G Wheel Loader SR4BHV SR4B SR4, 250-1302 original new injector

For procurement teams, maintenance managers and engine rebuilders servicing Caterpillar 3512B-powered industrial assets, the 10R-1303 original fuel injector is a purpose-built diesel injection component engineered to meet strict OEM performance specifications. Designed for all 3512B engine variants deployed across power generation, marine, mining, oil and gas, construction and general industrial sectors, it acts as a direct cross-reference replacement for part numbers 326-1642 and 3261642, eliminating fitment or calibration risks during scheduled overhauls and emergency repairs.

Manufactured from high-strength, wear- and corrosion-resistant alloy steel with precision-machined internal components, the 10R-1303 withstands extreme fuel pressures, thermal cycling, heavy vibration and continuous-duty operating conditions common in harsh industrial environments. It delivers precisely metered, uniformly atomized diesel fuel directly to combustion chambers at calibrated injection timings, supporting complete combustion, stable idling, responsive load handling, optimized fuel efficiency and reduced exhaust emissions. Every unit undergoes rigorous testing for spray pattern consistency, fuel delivery accuracy and leak resistance to ensure consistent, reliable operation.

Compatible with generator sets, marine propulsion engines, mining equipment, construction machinery, oilfield equipment and other listed industrial assets, this OEM-specification injector supports long service intervals and reduced unplanned downtime for 24/7 critical operations. Backed by a 12-month warranty, it helps operators maintain consistent engine power output, lower long-term operational costs and maximize the uptime of their CAT 3512B-powered equipment.