Michigan Motorsports 24" LS 3-Wire Extension Harness | TPS, Oil & Coolant Pressure Sensor Extension Harness | Fits LS1 LSX LQ4 LQ9 | Holley 554-102 Compatible

The Michigan Motorsports 24″ LS 3‑Wire Extension Harness is a must-have upgrade for LS swaps, EFI conversions, or custom builds requiring extra reach to throttle position, oil pressure, or coolant pressure sensors. Built to OEM specifications, this plug‑and‑play harness eliminates the need for cutting, splicing, or unreliable extensions. Designed for LS1, LSX, LQ4, LQ9, and other Gen III/IV LS applications, it delivers a clean, factory‑quality installation while maintaining perfect signal accuracy. Ideal for relocating sensors, rerouting wiring for turbo or supercharger setups, or pairing with Holley EFI pressure sensors such as the Holley 554‑102. Rugged, heat‑resistant wiring and high‑quality connectors ensure long‑lasting durability even in extreme performance environments.

• Direct Fit for LS TPS & Pressure Sensors – Extends throttle position, oil, and coolant pressure sensors with OEM‑style Metripack connectors for perfect fit and function.
• Extended 24″ Length for Flexibility – Ideal for custom routing in swaps, relocated sensors, or tight‑fit turbo/supercharger builds where extra length is critical.
• Plug‑and‑Play Installation – No modifications needed. Maintains OEM wiring integrity for reliable signal transfer and factory‑level performance.
• Holley EFI Sensor Compatible – Works flawlessly with Holley 554‑102 stainless pressure transducers, ensuring accuracy and dependability.
• Durable & Heat‑Resistant Construction – Engineered to handle high‑heat, high‑vibration environments for long‑lasting performance in any LS application.