Cummins 3960650 3960651 Injector Fuel Supply Tube Set

This injector fuel supply tube set includes part numbers 3960650 and 3960651, designed for the Cummins 6BT 5.9L engine series including 6B5.9 and 6B5.9-G variants. The tubes convey high-pressure fuel from the rail to the injectors, ensuring precise metering and combustion efficiency. Constructed from stainless steel per SAE J2044 and JIS standards, the tubes feature female connections and round head types without surface treatment. The set replaces OEM part numbers 5298289 and 5298290. Cross-reference interchange includes C3960650, C3960651, and A3960650. Applications span heavy-duty trucks, construction machinery, and generator sets equipped with the 6BT platform.