Manley Severe Duty series performance valves are a great choice for your high performance or race engine. All valves are made from stainless steel (intakes are NK-844; exhausts are XH-428) with chrome stems and hardened valve tips. Severe Duty series valves are made of superior materials, are fully machined and swirl polished, and are available with either undercut "Pro Flo" stems or straight stems. Image is a representation. Actual product may vary

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MANLEY Valve, Severe Duty, Intake, 2.25 in. Head Dia., 0.3085 in. Stem Dia., 5.424 in. Length, For Chrysler HEMI, Each

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MANLEY Valve, Race Master, Intake, 2.2 in. Head Dia., 0.311 in. Stem Dia., 5.11 in. Length, For Chevrolet SB, Each

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MANLEY Valve, Severe Duty, Exhaust, 1.56 in. Head Dia., 0.3136 in. Stem Dia., 5.208 in. Length, For Chevrolet L83, Set of 8

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