ARP M9 ID .670 OD chamfer black washers

Both kits are manufactured from premium grade chrome moly steel with a Black Oxide
finish. For applications where clearance is not an issue, the Washer kit features a chamfered ID,beveled edge and fully CNC machined surfaces. ARP driveline fasteners are cold forged to ensure molecular integrity, heat treated prior to thread rolling and machining and designed to exceed the OEM fasteners in strength and durability.