Caterpillar original Caterpillar 10R-1273 Fuel Injector Assembly for C15 C16 C18 3406E Engine Replacement for OEM new injector original new injector

The Caterpillar C15 fuel injector 10R-1273 is engineered as a direct OEM replacement for electronic unit injection systems in demanding diesel applications. Built with precision nozzle geometry and hardened, wear-resistant internal components, this injector delivers accurate fuel metering and high-pressure atomization to optimize combustion efficiency across the C15 and C15 ACERT engine platforms. Manufactured to original calibration specifications, the unit ensures consistent spray patterns that reduce excess fuel consumption, lower exhaust emissions, and support stable power output under heavy-duty operating conditions.

Designed for versatility, this injector is fully compatible with a wide range of Caterpillar-powered equipment, including highway trucks, mining trucks, wheel loaders, excavators, generator sets, marine vessels, and oilfield machinery. Each unit is produced with industrial-grade materials featuring corrosion-resistant surfaces, allowing reliable performance in harsh environments such as mining sites, construction zones, marine operations, and power generation facilities. Cross-referenced with authorized part numbers 249-0713 and 20R-8063, the injector provides a dependable replacement solution backed by a 12-month warranty and 100% pre-shipment testing.

Installation requires a clean working environment, inspection of the injector bore and seat, replacement of sealing O-rings, and adherence to Caterpillar torque specifications. Technicians should verify ECM operation, install a clean fuel filter, and perform a post-startup leak check. Routine maintenance—including the use of high-quality diesel fuel, scheduled filter replacement, and periodic injector diagnostics—helps extend engine life and maintain long-term injection system reliability.