Caterpillar original 365-8156 Diesel Common Rail Injector C18 Engine Excavator Truck Auto Parts 295-9085 10R-8988 20R-8048 618-0750 10R-7230 original new injector

The Caterpillar C18 fuel injector 365-8156 is engineered as a direct OEM replacement for CAT C18 Series diesel engines delivering between 575 HP and over 800 HP. It is cross-referenced with 236-8156 and 236-8155, supporting straightforward installation across heavy equipment, generator sets, marine vessels, and oilfield machinery. Its solenoid-controlled direct injection system delivers precisely atomized fuel under pressures reaching 1800 bar, improving combustion efficiency, throttle response, and overall fuel economy in demanding industrial environments.

Manufactured with a high-strength alloy steel body, the injector withstands extreme fuel pressures, thermal cycling, mechanical vibration, and long-duration continuous operation. Critical components feature micron-level machining tolerances, a spring-loaded plunger for accurate pressure regulation, and a solenoid valve ensuring timed fuel release. A corrosion-resistant surface treatment protects against oxidation, fuel contamination, moisture, and environmental deterioration, while wear-resistant coatings and OEM-standard sealing reduce leakage risk and extend service life.

Recommended maintenance includes injector inspection every 500 operating hours, routine fuel filter cleaning, use of CAT-approved diesel fuel and lubricants, priming injectors before startup to avoid dry starts, and replacing seals and washers during servicing. Suitable for harsh industrial applications, the 365-8156 ensures reliable performance in mining, construction, power generation, marine, and oil and gas operations.