Arp - Insert Washers - 3/8 Id (10)

The Arp Insert Washers are engineered for superior performance and durability. Featuring a 0.750-inch outside diameter and a 0.375-inch inside diameter, these washers are crafted from premium chromoly with a black oxide finish. Designed for head bolts, these insert washers come in a set of 10 and offer reliable protection against galling and collapsing around studs or bolts. Ideal for high-wear areas such as mid-motor plates or head bolt holes, these washers ensure longevity and optimal performance.