11/32" X .520"-.565", Viton Valve Seals, Flex Body Type Universal, VSS-408, set of sixteen - Alex's Parts Sales
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Amazon.com: Aftermarket Positive Valve Stem Seals 11/32 X .530 METAL CLAD - Set of 16 Compatible with Viton SBC BBC SBF BBF : Automotive
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DNJ VSS447 Valve Stem Seal (Viton) Fits 89-94 Ford Mazda B2300 Ranger 2.3L L4 OHV SOHC 8v - Walmart.com
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