Set includes 12 washers and 12 bolts. Fits 1955-1995 262, 265, 267, 283, 302, 305, 307, 327, 350 and 400 small block Chevy engines. Bolt Thread Size: 3/8"-16. Head Style: 6 Point. Under Head Length: 1.000".
ARP Hex Valve Cover Bolt Kit Duramax 6.6L LBZ/LLY/LML/LMM - Polished SS 400-7534
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13 ARP Hex Head Coarse Thread Cylinder Head Bolts 7/16-14" x 3.750" Long