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

More From This Category

MANLEY Valve, Race Master, For Toyota 3UR-FE, 38mm Head Dia, Each

MANLEY Valve, Race Master, For Toyota 3UR-FE, 38mm Head Dia, Each

$48.92

MANLEY Valve, Race Flo, Intake, Bead Loc, 2.02 in. Head Dia, 0.3125 in. Stem Dia, 4.955 in. Length, For Chrysler HEMI, Each

MANLEY Valve, Race Flo, Intake, Bead Loc, 2.02 in. Head Dia, 0.3125 in. Stem Dia, 4.955 in. Length, For Chrysler HEMI, Each

$142.29

Sonnax Oversized Pressure Regulator Valve, ZF5Hp19, Late Vb E18.2, Each

Sonnax Oversized Pressure Regulator Valve, ZF5Hp19, Late Vb E18.2, Each

$74.75

Trick Flow Valve, Exhaust, Stainless Steel, 1.760 in. Diameter, .341 in. Stem, 5.060 in. Length, Big For Ford, Each

Trick Flow Valve, Exhaust, Stainless Steel, 1.760 in. Diameter, .341 in. Stem, 5.060 in. Length, Big For Ford, Each

$76.10

MILODON Valves, Intake, Race, Stainless Steel, 2.30 in. Dia, +.350 Long, Big For Chevrolet, 396, 427, 454, 502, Each

MILODON Valves, Intake, Race, Stainless Steel, 2.30 in. Dia, +.350 Long, Big For Chevrolet, 396, 427, 454, 502, Each

$79.09

Sonnax Oversized Tc Pressure Valve Kit, Chrysler, Ch 845Re, ZF8Hp/45/55/70, Each

Sonnax Oversized Tc Pressure Valve Kit, Chrysler, Ch 845Re, ZF8Hp/45/55/70, Each

$37.73