Description
Interchange Part Number：12690459 12623131 2838875 28329581 19436438
New Driver’s side (Left) LTx engine 4 pin Fuel rail wiring harness.
Fits LT1, L83, L86, LT4 with 4 pin Fuel rail pressure sensor.
Made from all new Factory GM connectors and high temp TXL wire to hold up longer than the OE harness. Covered in high temp fabric tape for heat and abrasion resistance.
Can also be used for engines going from a 3 pin pressure (17-up) sensor back to a 4 pin
