Perkins original 116-7150 Excavator Fuel Injector Assembly 3126 Series Diesel Engine 177-4752 196-4229 10R-9238 Aftermarket Replacement for OEM new original new injector

The Perkins 3126 HEUI side mount fuel injector carries the primary OE number 116-7150 and is engineered as a direct replacement for the Perkins 3126, 3126A, and 3126B diesel engine platform. This injector uses HEUI (Hydraulic Electronic Unit Injector) side solenoid technology, where high-pressure engine oil and electronic control signals work together to manage injection timing and fuel delivery. The authorized cross-reference numbers 160-1697, 0R-4970, 0R4970, OR4970, CA0R4970, 0R4970R, REB0R4970, 0R4970DR, 116-6706, 160-1695, 0R9807, and OR9807 allow distributors and rebuilders to match the correct unit across multiple OE catalogs, reman databases, and global diesel parts marketplaces.

This injector is widely used in Perkins 3126 truck engines, Perkins 3126 industrial engines, 30/30 Deuce track-type tractor applications, and heavy equipment engine platforms. It receives fuel from the engine fuel supply system and uses electronically controlled hydraulic actuation to generate high injection pressure, then pressurizes and atomizes diesel fuel through the nozzle for a controlled spray pattern inside the combustion chamber. Common fault symptoms include hard starting, rough idle, white smoke, black smoke, misfire, power loss, fuel dilution, engine knock, high fuel consumption, and related diagnostic fault codes.

Before installation, verify the old injector number and engine configuration, clean the injector bore and sealing surface, install new seals and O-rings lubricated with clean engine oil, and follow the Perkins service manual for torque specifications. After installation, inspect the electrical connector, engine oil system, fuel supply system, and check for leaks. The HEUI injector depends on clean fuel and clean engine oil, so replace filters regularly, maintain correct oil quality, and test injector balance when symptoms appear.