Holley 558-220 EFI GM GEN V GDI Sub HarnessFor Early LTx Engines Part Number: 558 220 GM GEN V GDI Sub harness for early LTx Engines. The fuel pressure sensor easily identifies these engines, early engines use a 4 pin fuel pressure sensor. GM uses two different fuel pressure sensors with the Gen V LTx engines. Depending on which one your engine has, will determine which harness is required. The Sensor is mounted to the back of the driver side fuel rail. Features and Benefits Early LTx engines
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For Early LTx Engines
Part Number: 558-220
GM GEN V GDI Sub harness for early LTx Engines. The fuel pressure sensor easily identifies these engines, early engines use a 4-pin fuel pressure sensor. GM uses two different fuel pressure sensors with the Gen V LTx engines. Depending on which one your engine has, will determine which harness is required. The Sensor is mounted to the back of the driver-side fuel rail.