Under Valve Cover Harness Kit – 1999–2003 7.3L Powerstroke Improve engine performance and eliminate rough running or misfires with this Under Valve Cover Harness Kit for 1999–2003 7.3L Powerstroke engines. Over time, the under valve cover harness can become brittle, worn, or short out, causing poor performance, rough idle, or misfiring. This all-in-one kit provides a complete solution to restore reliability and keep your engine running smoothly. What’s Included in the Kit Injector Wiring Harnesses – replaces worn or damaged harnesses Glow Plug & Injector Harness Repair Connectors – for secure electrical connections Under Valve Cover Gaskets – ensures proper sealing and prevents leaks Key Features Complete, one-stop solution for under valve cover harness replacement Restores reliable engine performance and smooth operation Direct-fit components for easy installation High-quality parts designed to last and prevent future electrical issues Prevent misfires, rough running, and electrical issues with this comprehensive under valve cover harness kit, the ideal choice for maintenance or engine rebuilds on your 7.3L Powerstroke.