It is not uncommon to strip the threads or break a bolt on the upper engine stabilizer rod (dogbone). This kit will bypass the broken bolt or bolts by bolting onto the flywheel housing instead of the engine block. Use this kit if the engine has a breather on the flywheel housing and one or both bolts are broken. Kit includes an aluminum casting that will slightly relocate the breather to allow room for the bracketry, hardware and instructions. Made in the U.K. Ref: MSSK005.