Caterpillar original  20R-8058 C7 C9 Common Rail Fuel Injector 20R8058 20R-8060 238-8091 241-3238 243-4502 295-1408 387-9430 for 320D 323D original new injector

Engineered for demanding heavy-duty diesel platforms, this C7 Fuel Injector Assembly (OE 20R-8058) is a precision-manufactured replacement solution for C7 and C7 ACERT engines operating under continuous load conditions. Cross-referenced with 10R-4762, 222-5962, 236-6011, 238-9808, 238-9809, 241-3239, 243-4503, 295-1409, 328-2584, and 387-9429, this unit provides direct fitment for excavators, wheel loaders, motor graders, backhoe loaders, on-highway trucks, and industrial generator sets deployed across global fleets.

Built around Hydraulic Electronic Unit Injection (HEUI) technology, the injector leverages engine oil pressure as an intensification medium to generate extremely high fuel injection pressures. Upon receiving the ECM control signal, solenoid activation drives the intensifier piston, amplifying fuel pressure and lifting the needle valve to atomize fuel through multi-hole nozzle geometry. The result is uniform fuel distribution, higher power density, improved cold-start capability, reduced smoke, better fuel economy, and lower NOx emissions. Hardened, heat-treated needle valves and control pistons resist wear, while protective coatings safeguard against sulfur contamination and moisture intrusion, supporting 10,000+ operating hours under proper maintenance.

Installation follows a defined procedure: clean injector bore, inspect cylinder head seat, fit new copper washer, lubricate O-rings, install the assembly, torque to specification, reconnect the wiring harness, prime the fuel system, perform an injector cutout test, and verify leak-free operation. Ideal for construction, mining, marine auxiliary, and power generation applications worldwide.