Caterpillar original C13 Diesel Engine Fuel Injector 1OR-2977 10R-3262 249-0712 249-0705 249-0708 10R-2977 332-1419 20R-2437 Replacement for OEM original new injector

The Caterpillar C13 C11 diesel fuel injector 10R-2977 is engineered for precision fuel delivery, stable atomization, and consistent spray pattern in heavy-duty inline six-cylinder diesel engines. Designed to support Caterpillar C13 12.5L and C11 engine platforms, this injector assembly handles fuel metering, injection timing control, and cylinder balance, which are essential for maintaining combustion efficiency under high load conditions. The unit is available as a single injector or a matched set of six for complete engine service.

This replacement injector is widely used on heavy-duty trucks, construction machinery, generator sets, industrial power units, marine auxiliary engines, mining support equipment, agricultural machinery, forestry equipment, and off-highway machines. Cross references including 1OR-2977, 249-0708, EX632977, 632977, 10R-1274, 10R-1305, 10R-3147, and 253-1459 allow distributors, diesel repair shops, engine rebuilders, and fleet maintenance buyers to consolidate inventory for global spare parts distribution across North America, South America, Europe, the Middle East, Africa, Southeast Asia, and Australia.

Before installation, confirm the engine serial number, engine arrangement number, injector part number, and old injector label. Use clean diesel fuel, replace fuel filters on schedule, drain the water separator, and keep the intake system clean. Follow Caterpillar service manual for torque values, bleed the fuel system after installation, check for leaks, monitor idle quality, inspect smoke condition, and scan for active fault codes. Diagnose related issues through cylinder cut-out, fuel pressure test, and connector inspection.