Direct-Fit UVCH Replacement: Designed specifically for 1997–2003 7.3L Powerstroke engines, providing proper connector geometry and OE-style fitment for the under-valve-cover injector and glow plug wiring harness.
Restores Injector & Glow Plug Operation: Ensures stable electrical contact to all injectors and glow plugs, correcting common issues such as misfires, no-starts, long crank times, and intermittent power loss caused by worn OE harnesses.
Heat-Resistant Construction: Built with high-temperature wiring, durable insulation, and secure connectors engineered to withstand valve cover heat, oil exposure, and engine vibration for long-term reliability.
Plug-and-Play Installation: No splicing required—installs directly in place of the original harness, providing a clean, factory-style solution for servicing or rebuilding 7.3L Powerstroke engines.
Michigan Motorsports Quality: Manufactured to OE-level specifications with reliable electrical performance trusted by technicians servicing 7.3L Powerstroke platforms.
Michigan Motorsports pigtails fit 1997 to 2003 Ford 7.3L Powerstroke Glow Plug Injector Harness Pigtail. A very common problem on the 7.3L Powerstroke is that the main connector at the valve cover melts down This connector handles the current for both the glow plugs and injectors (both of which are under the valve covers.) The purpose of this kit is to repair the connector on the outside of the valve cover which is really a part of the engine wiring harness. This will save you time and money as opposed to buying a whole new engine wiring harness. Often times when this failure occurs, you will also need to replace the valve cover gasket, and the internal harnesses under the valve cover as well to prevent a repeat failure (sometimes the failure is due to oil seeping into the connector). . This kit will work on mid 1997 and up to 2003 7.3L Powerstroke engine ONLY. If you have a 1997 model you need to check the number of electrical connectors you have per valve cover. If you have a single connector per side, this is the correct kit.