Caterpillar original Caterpillar 359-4050 Common Rail Fuel Injector for C15 C27 C32 Diesel Engine new injector original new injector

The CAT fuel injector 359-4050 is engineered for Caterpillar C15, C18, C27, C32, and C32 Marine diesel engines, delivering precise fuel metering, stable injection pressure, and reliable atomization required for high-load industrial operations. A coated plunger design improves wear life and supports low-sulfur fuel compatibility, helping maintain fuel economy, smoke control, and consistent power output across demanding duty cycles in mining, construction, oilfield, marine, and power generation applications.

This mechanical electronic injector fits heavy equipment platforms including D11, D11T, 777 series, 992, 992K, 854K, MD6250, and MD6310. It is available in original and reman replacement options, supporting OEM service, dealer networks, and aftermarket distribution. Multiple cross references such as 20R-1308, CA3594050, 703750AT, 703751AT, 253-0615, and 10R-1000 simplify identification and inventory management for global parts buyers.

Proper maintenance is critical to injector life. Use clean diesel, replace fuel filters at scheduled intervals, drain water separators, inspect electrical connectors and fuel return lines, and monitor exhaust smoke and fault codes. Common failure signs include hard starting, rough idle, black or white smoke, power loss, high fuel consumption, and fuel dilution in oil, often caused by clogged nozzles, worn internals, leakage, or contamination. Diagnostic scanning, cylinder balance testing, and injector bench testing are recommended before replacement, and matched-set replacement is advised when engine condition requires it.