ARP Bellhousing Bolt Kit - 10 mm x 1.50 Thread - 1.375 in Long - Hex Head - Washers Included - Chromoly - Black Oxide - GM LS-Series - Set of 8 Schoenfeld Headers 50 Male O-Ring

50 Male O-Ring

Black Tuned-Port Aluminum Bracket

Sounds like dirt may have gotten in the relief valve

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ARP Bellhousing Bolt Kit - 10 mm x 1.50 Thread - 1.375 in Long - Hex Head - Washers Included - Chromoly - Black Oxide - GM LS-Series - Set of 8 Schoenfeld Headers 50 Male O-RingARPs product line contains thousands of part numbers, and has expanded to include virtually every fastener found in an engine and driveline. These range from quality high performance OEM replacement parts to exotic specialty hardware for Formula 1, IndyCar, IMSA, NASCAR and NHRA drag racing and marine applications. Since 1968, ARP is the fastener of champions and the world leader in fastener technology. Product Description: Bellhousing Bolt Kit 10 mm