original 238-8091 Common Rail Diesel Fuel Injector for C7 C9 Excavator Engine 2388091 10R-4761 387-9427 387-9428 20R-8058 20R-8059 Injector original new injector

Engineered for professional diesel service programs, the 238-8091 fuel injector assembly delivers OE-style replacement performance for C7 and C7 Series diesel engines. Cross-referenced with 10R-4763, 20R-8059, 233-3535, 236-0974, 241-3400, 263-8218, 295-1410, 328-2582, 387-9428, 2225958, 2225962, 2313400, and 2462343, this injector is a globally recognized service part supporting rebuild markets, workshop repair, and export distribution. Additional aftermarket cross numbers include EX634763, PAI 390093X, Interstate-McBee M-2388091, DIPACO D2388091, and Alliant Power AP63687.

The 238-8091 supports precision fuel metering, correct injection timing, accurate atomization, and balanced cylinder combustion. It helps restore engine performance by reducing white smoke, black smoke, rough idle, and power loss, while improving cold starting and stability under load. Typical equipment applications include 140K2, 324D, 324D FM, 324D FM LL, 324D L, 324D LN, 325D, 325D FM, 325D FM LL, 325D L, 325D MH, 326D L, 328D LCR, 329D, 329D L, 329D LN, M325D L MH, and M325D MH. Some aftermarket sources reference 3126B or C9 compatibility, which should be verified using the engine serial number and old injector code.

Recommended service practice includes diagnostic scanning, cylinder balance testing, leakage checks, harness inspection, and full-set replacement on high-hour engines. Installation should be performed by a qualified diesel technician following official torque values, with new seals, clean fuel supply, and verified engine oil quality.