Manley Extreme Duty Exhaust Valve - 1.880 in Head - 0.372 in Valve Stem - 5.354 in Long - Big Block Chevy HXY2121 The base has and o-Ring the tubular design allows SCOBRS0054U0K01060 150-45-6712K Size:7-5/8+ (61+)
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Ships within 48 hours · Estimated delivery Sep 26 - Oct 1