1970-76 455 V8 Engine Motor Mount to Engine Block Bolts 12pc Factory correct bolts & washers with indented head and thick washers 8pc. These are the bolts and thick washers that are used to hold the motor mount to the side of the engine block. They are a grade 8 bolt with indented head and a thick washer. These are used on all V8's 455 cid. These are a must for a concourse restoration. This is exact inline tube reproduction made identical to the originals. The bolts are black phosphate and the washers are silver zinc.