Caterpillar original Caterpillar 10R-9236 fuel injector for C7 C9 engine diesel spare part replacement for OEM new injector original new injector

The CAT 10R-9236 EUI fuel injector is engineered as a direct-fit replacement for Caterpillar C15, C-15, C15 ACERT, 3406E, and C16 diesel engines, covering an extensive list of cross-references including 10R-1273, 249-0709, 239-4909, 232-1199, 148-012-0036, EX631273, CA10R1273, and 10R-8501. The inline 6-cylinder, 4-stroke platform with 15.2L displacement, 137mm bore, 171mm stroke, and 17.0:1 compression ratio is widely deployed in industrial ratings from 354-433 kW / 475-580 bhp at 1800-2100 rpm, making this injector relevant for fleets, rebuild shops, and aftermarket distributors operating across heavy-duty on-highway and off-highway segments.

Manufactured to OE-style specifications, this electronic unit injector delivers precision fuel metering and optimized atomization to help restore engine power, reduce black and white smoke, improve idle quality, and support fuel economy. Coated plungers contribute to wear resistance, while electronic injection control ensures proper cylinder balance and consistent injection quantity across the engine. Each unit is built to perform reliably with low-sulfur and low-lubricity diesel fuels, undergoing extensive testing for leakage, flow rate, and atomization performance before shipment.

For maintenance, operators should use clean diesel fuel, replace fuel filters on time, drain the water separator, and keep the fuel tank free from contamination. Periodic inspection of injector wiring and connectors, along with ECM diagnostic code scanning, helps identify issues such as hard starting, rough idle, power loss, high fuel consumption, or excessive exhaust temperature. The injector is supplied in sealed dry packaging, handled with care, and installed without requiring excessive idle time, making it a practical solution for fleet maintenance programs, diesel repair shop replacement projects, and global aftermarket inventory matching.