BBC Air flow research casting #315/335/357 head bolt kit. Genuine ARP hardware, supplied as kit 135-3712.Fits Chevrolet — 396, 402, 409, 427, 454, 496, 502, 572, Air Flow Research, Big Block - AFRDetails Kit number: 135-3712 Category: Cylinder Head Product group: Cylinder Heads California Proposition 65 warning⚠ WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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