Valve KeeperSCR Forklift Parts carries this valve keeper as an aftermarket replacement, giving material handling service providers a practical alternative to dealer-only sourcing. It is the small split lock that secures the spring retainer to the valve stem, a stocked consumable for any cylinder head service. Keeping pieces like this in stock means a downed truck can get back to moving freight the same shift instead of waiting on a dealer order. Because the cross-reference for AC13210-B8501 is to an unrecognized supplier code, contact our team in Whittier with your truck make, model, and serial number to confirm fit before ordering.Aftermarket replacement part, cross-references original part number AC13210-B8501.Need help confirming fit? Call (562) 693-7748 with your serial number.Part number variants: AC13210-B8501, ac13210-b8501, AC13210B8501, ac13210b8501 ⚠ Warning: Some equipment has serial-number breaks that may not be reflected in the catalog. Contact us for clarification before ordering if uncertain.SCR Forklift Parts ships from Whittier, CA with next-day delivery available across the US when needed.