These handy washers are made to protect the top of holes from galling or collapsing around studs or bolts.
They're ideal for head bolt holes, mid-motor plates, or any other high-wear area that requires a washer.
Easy to install by just over­sizing hole and pressing in washer. ARP Insert Washers are fully CNC machined from premium thru-hardened 8740 stock.

Insert ID Insert OD OD Size
7/16 .529 .875




More information in ARP´s catalog here.