BD Diesel Killer Dowel Pin Repair Kit - 1994-1998 Dodge 12-valveCommon to the Dodge 5. 9L 12 valve engines, the dowel pin located behind the timing cover can work its way loose and drop down into the timing gears causing extensive damage. This kit gives everything needed to replace the pin with a more permanent solution before it leaves your truck down. Installation Instructions The OEM dowel pin located behind the timing cover can work its way loose and drop down into the timing gears causing extensive damage