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, 1.94 in. Head Dia., 0.3415 in. Stem Dia., 5.14 in. Length, SBC, Set of 8

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MANLEY Valve, Titanium, Intake, Bead Loc, 2.1 in. Head Dia., 0.3415 in. Stem Dia., 5.54 in. Height, Each

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MANLEY Valve, Race Master, Intake, Bead Loc, 37mm Head Dia., 0.2355 in. Stem Dia., 4.722 Length, For Ford 5.0L, Each

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MANLEY Valve, Race Master, Exhaust, Bead Loc, 31.5mm Head Dia., 0.2345 in. Stem Dia., 4.274 Length, For Ford 5.0L, Set of 8

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MANLEY Valve, Race Master, Intake, 2.02 in. Head Dia., 0.3715 in. Stem Dia., 4.98 in. Length, For Chrysler SB, Each

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MANLEY Valve, Titanium, Exhaust, 1.9 in. Head Dia., 0.3415 in. Stem Dia., 5.54 in. Length, Each

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