Collection: Auto - Transmission Tunnel Patch

Seal off your cabin floor from hot engine bay heat loops, eliminate toxic exhaust fumes, and clean up custom floor cutouts with our selection of Auto Transmission Tunnel Patches. At DIY Customs, we provide heavy-gauge stamped steel tunnel patches, specialized fiberglass floor conversion inserts, replacement transmission hump repair plates, and direct-fit sheet metal floor panels designed for a perfect fit on custom interior restorations and manual or automatic conversions. Whether you are seeking a specialized metal transmission tunnel patch to close up an oversized hole left behind after an old shifter assembly removal, outfitting your workspace garage bay for a comprehensive manual transmission swap or custom linkage retrofit, or patching up typical under-carpet floorboard rust spots to block out destructive moisture and highway road noise, our professional-grade sheet metal body hardware offers the structural rigidity and physical durability you need at unbeatable prices. From raw layout floor plates to direct-fit hardware panels engineered for iconic classic muscle cars, vintage hot rods, and custom off-road utility trucks, we carry the essential fabrication parts to button up your drivetrain bay. Don't see the specific transmission hump contour mold, precise sheet metal gauge thickness, or specialized shifter boot layout index for your floor configuration project? Hit the live chat or call 412-882-8346—we can special order and drop-ship exactly what your restoration build requires directly to your doorstep!