Home / Bolts & Studs / 1/4-28 hex nut kit (2pcs) “ARP GM DURAMAX 6.6L L5P CA625+ HEAD STUD KIT” has been added to your cart. View cart 1/4-28 hex nut kit (2pcs)€ 2,14 1/4-28 hex nut kit (2pcs) quantity Add to cart SKU: ARP-200-8629 Categories: Bolts & Studs, Motor Brand: ARP Description Description Country of Origin: USA Related products Bolts & StudsEngine & Performance “SB2-2 3/8″” block 260ksi 12pt hsk” Bolts & StudsEngine & Performance Dodge 5.9L 24V Cummins ’98-’02 custom age hsk Bolts & StudsEngine & Performance ARP cabinet with SS hex accessory bolts Bolts & StudsEngine & Performance ARP cabinet with black 12pt accessory bolts