These Extreme/Severe Duty Gen II custom valves with unmatched strength and superiority are the only valves of their kind. Exhaust material XH-428 and intake material NK-844 are paired together for ultimate dominance over all others. With four times the tensile strength of competitors' intake valves and supremely better fatigue life, Manley Severe Duty Gen II custom valves truly show their commitment to seeing that you're there at the finish. You decide the head diameter and seat and margin widths, as well as valve length, groove type, and location for the perfect custom setup! Image is a representation. Actual product may vary

More From This Category

MANLEY Valve, Budget Performance, Intake, 2.055 in. Head Dia, 0.3415 in. Stem Dia, 4.911 in. Length, SBC, Set of 8

MANLEY Valve, Budget Performance, Intake, 2.055 in. Head Dia, 0.3415 in. Stem Dia, 4.911 in. Length, SBC, Set of 8

$191.87

Sonnax Oversized Torque Converter Regulator Valve Kit, Jatco JF010E (Re0F09A/Re0F09B), Each

Sonnax Oversized Torque Converter Regulator Valve Kit, Jatco JF010E (Re0F09A/Re0F09B), Each

$79.53

MANLEY Valve, Extreme Duty, Exhaust, 2.06 in. Head Dia, 0.3415 in. Stem Dia, 6.7 in. Length, Gen II, Set of 8

MANLEY Valve, Extreme Duty, Exhaust, 2.06 in. Head Dia, 0.3415 in. Stem Dia, 6.7 in. Length, Gen II, Set of 8

$1,113.23

MANLEY Valve, Extreme Duty, Exhaust, 1.94 in. Head Dia, 0.3415 in. Stem Dia, 5.522 in. Length, BBC, Each

MANLEY Valve, Extreme Duty, Exhaust, 1.94 in. Head Dia, 0.3415 in. Stem Dia, 5.522 in. Length, BBC, Each

$129.64

Sonnax Throttle Valve Plug Kit, AOD, Each

Sonnax Throttle Valve Plug Kit, AOD, Each

$62.07