Caterpillar original 127-8218 Mechanical Common Rail Diesel Fuel Injector for 3116 3216 Engine 525B 535B 950G 960F 962G E320B E322B E325B Excavator Replacement for original new injector

The 127-8218 mechanical fuel injector is engineered for Caterpillar CAT 3116 and CAT 3126 diesel engines equipped with the Mechanical Unit Injection (MUI) system. Featuring an 8 mm plunger and precision-machined internal components, this injector delivers consistent fuel metering and stable combustion across demanding industrial duty cycles. The unit is specifically designed for mechanical fuel injection platforms and is not intended for electronic common rail engine configurations. A Cat Reman remanufactured replacement is also available under part number 0R-8684 for customers seeking factory-reconditioned options.

This injector serves a wide range of Caterpillar equipment, including the 950G, 960F, and 962G wheel loaders, the IT62G integrated toolcarrier, 525B and 535B skidders, TK370, TK371, TK380, and TK381 forestry machines, as well as additional forestry models 533, 543, 570, and 580. It is also applied in Challenger 35, 45, and 55 tractors, supporting both agricultural and heavy construction operations. Authorized cross-reference numbers include 107-7735, 156-5023, and 20R-2052, along with DS-127-8218 for distributor identification.

Before installation, customers must verify the original injector part number, engine model and serial number, fuel system type, equipment model, and injector specification. Confirming compatibility through these parameters ensures correct fitment and reliable long-term performance. All authorized OE numbers, including 127-8218, 1278218, 0R-8684, OR-8684, 107-7735, 156-5023, 20R-2052, and DS-127-8218, should be cross-checked prior to order processing and shipment to guarantee proper application on the intended Caterpillar platform.