The Diesel Exhaust Fluid (DEF) Pump Wiring Harness is a genuine part manufactured by GM, specifically designed for vehicles with a VIN of Y and an engine code of L5P. This 137.5" WB harness features a compact design with dimensions of 2.1" height, 3" length, and 3" width, weighing only 0.34 lb. Perfect for efficiently wiring the DEF pump in your vehicle, ensuring optimal performance and emission control.