• Shop › LT4 MAP Pad Image 1 of 1 LT4 MAP Pad $30.00 Weld-on MAP pad for any fabrication needs. Fits an LT4 application PN: 25203651/12644807. Quantity: Add To Cart Added! Weld-on MAP pad for any fabrication needs. Fits an LT4 application PN: 25203651/12644807.