Holley EFI Terminator X Stealth GM LS 4150 - Shiny Idle Kits and Parts " This product requires a 3/4

This product requires a 3/4 inch hole to mount

Aggressive Appearance & Increased Ground Clearance: This kit gives your XJ a bold

Hardened Valve Seats - Enhances durability and longevity under high-stress conditions

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Holley engineers have designed 12-1600 to feature improved hot fuel handling capabilities

Holley EFI Terminator X Stealth GM LS 4150 - Shiny Idle Kits and Parts " This product requires a 3/4The Terminator X Stealth 4150 EFI system from Holley features 4, 100LB HR Fuel Injectors capable of supporting up to 650 HP naturally aspirated or 600 HP on forced induction applications. The Terminator X ECU features fuel maps that self learn and integrated ignition timing control, yielding improved idle stability, drivability, and horsepower at wide open throttle! Did we mention that the Stealth 4150 also includes transmission kick down provisions