Pontiac 400-428, Ram Air & SD 12pt head stud kit. Genuine ARP hardware, supplied as kit 190-4203.Fits Pontiac — 400, 421, 428, Ram Air, Super DutyDetails Kit number: 190-4203 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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