Caterpillar original Common Rail Fuel Injector Assembly 20R-2437, Replacement for OEM 10R-2977, Cross Reference 10R-7236, for C13 Engine Excavator Truck, Compatible with 332-1419 original new injector

Engineered for the Caterpillar C13 and C13 ACERT diesel engine family, the 20R-2437 fuel injector assembly delivers precisely metered, high-pressure fuel directly into the combustion chamber with the correct timing and spray pattern. As a common rail / electronic diesel injector, it plays a decisive role in atomization quality and stable combustion, directly influencing torque output, fuel economy, exhaust temperature, smoke levels, engine response, starting performance, and overall engine smoothness on the 12.5 L inline 6-cylinder CAT C13 platform, which is rated from 287–400 kW (approximately 385–536 hp) depending on configuration.

This injector is widely supplied and searched under multiple OE and cross-reference numbers, including 20R-2437 / 20R2437, 249-0708, 10R-2977, 10R-3262, 10R-7236, 10R-1274, 20R-8045, and 20R-8046. Because injector design can vary by production year, emissions level, and ECM calibration, final compatibility should always be confirmed by engine serial number, injector calibration code, fuel system type, equipment model, and the original injector number before ordering.

Built to heavy-duty, industrial-grade standards, the 20R-2437 is suitable for C13-powered excavators (including 345C, 345D, and 349D applications), heavy-duty trucks, generator sets, construction and mining machinery, agricultural equipment, marine auxiliary systems, and oilfield power units. For distributors, fleet maintenance providers, and repair shops, it offers a dependable original-type replacement solution that supports reliable operation, stable combustion, and improved engine response across demanding industrial, construction, mining, transportation, and power generation environments.