BB Chevy 3/8 x 1.670 SS header stud kit. Genuine ARP hardware, supplied as kit 400-1403.Fits Chevrolet — Big Block (all)Details Kit number: 400-1403 Category: Cylinder Head Product group: Headers 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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