original 20R-5036 Common Rail Fuel Injector for C9.3 Engine 336E Excavator Diesel Fuel Injector Replacement for OEM 456-3493 456-3509 456-3544 20R-5079 363-0493 original new injector

Engineered as a direct service solution for C9.3 and C9.3B diesel platforms, this Original Reman Fuel Injector 20R-5036 delivers precise fuel metering and reliable atomization for demanding heavy-duty operating cycles. Cross referenced with 456-3493, 363-0493, CA20R5036, CA4563493, 456-3589, 20R-1318, 20R-5079, 173-9268, 198-7912, 460-8213, 342-5487, 417-3013, and 304-3637, it is widely stocked across global parts supply chains to support fast turnaround for repair shops, fleet operators, and OEM service centers.

The injector is commonly published for equipment such as 336E, 336F, 336EL, 336FL, 966K, 972K, D6T, D7E, 627H, 568 FM, 12M 2, 140M 2, and 160M 2, covering excavators, wheel loaders, track type tractors, wheel tractor scrapers, motor graders, and forestry machines. Some supplier listings also reference 340E, 340F, 349E, and 349F. Compatibility with C9 alongside C9.3 appears in aftermarket listings but should not be assumed universal—engine arrangement number, serial prefix, emissions configuration, and trim data must be verified before shipment.

To maximize service life, use clean diesel fuel, replace filters on schedule, and drain the water separator. If failure is caused by contaminated fuel, inspect the tank, lines, pump, rail, and filters before installing a reman unit. Recommended diagnostics include trim coding, return-flow testing, cylinder cut-out testing, rail pressure checks, and bench spray-pattern verification to resolve hard starting, misfire, black smoke, power loss, and knock.