1、Vehicle Fitment: Wiring harness is replacement for Excursion V8 7.3L, replacement for Super Duty Truck V8 7.3L, fit for F450 F550 Truck V8 7.3L. 2、OEM Number: Engine wiring harness replace part number is F81Z 12B637 EA. Please make sure the OEM number matches the part you are replacing. 3、Enhanced Efficiency: With the wire harness, you can expect enhanced transmission efficiency, smoother gear shifts, and improved overall driving experience. 4、High Performance: Specifically designed for diesel engines with automatic transmissions. It ensuring efficient and reliable performance. 5、Reliable Connection: Wire harness undergoes rigorous testing to ensure optimal performance, electrical connectivity, and reliable operation. Item Type: Engine Wiring Harness Material: Plastic OEM: F81Z 12B637 EA Fitment: Replacement for Excursion V8 7.3L Diesel Engine Replacement for Super Duty Truck V8 7.3L Diesel Automatic Transmission Engine Fit for F450 Truck V8 7.3L Diesel Automatic Transmission Engine Fit for F550 Truck V8 7.3L Diesel Automatic Transmission Engine 1 x Wiring Harness <div>Please double check the part number of your item, matching information is for reference only.</div>