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(888) 312-8812 Login SignupFuel delivery at the cylinder begins with the D&W Cummins Fuel Injector, which meters and atomizes fuel into the combustion chamber. This remanufactured unit includes a Cummins injector top stop, which controls injector height and seating position within the engine. Proper placement affects spray pattern and combustion timing, both of which influence engine performance. In real operation, injector wear can lead to poor fuel distribution or inefficient combustion. Fuel delivery returns to proper function with the D&W 3047973 installed.
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