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Valve Fitment
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Valve Position
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Intake Valve Head Diameter (in.)
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Exhaust Valve Head Diameter (in.)
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Intake Valve Head Diameter (mm)
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- 54.610mm (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Exhaust Valve Head Diameter (mm)
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Intake Valve Stem Diameter (in.)
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- 0.311 in. (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Exhaust Valve Stem Diameter (in.)
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- 0.341 in. (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
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Intake Valve Stem Diameter (mm)
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- 8.69mm (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Exhaust Valve Stem Diameter (mm)
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- 8.67mm (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- 8.68mm (2) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
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- 8.70mm (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.

Manley Valves

Showing In Stock Items. Show All 4 Items.

Individual Parts

Part Groups

Results 1 - 3 of 3

On Sale

Manley Severe Duty Series Stainless Steel Valves

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.

4.94 out of 5 stars ( 17 )

$286.72

—

$296.64

$272.38

—

$281.81

On Sale

Manley Extreme Duty Series Stainless Steel Valves

Manley Extreme Duty Series performance steel valves are a great choice for supercharged, alcohol-burning, or high-revving engines. These engines generate a lot of heat and require special valves that can handle that kind of punishment. All valves are made from the best stainless steel available, with chrome stems and hardened valve tips. Extreme Duty Series valves are swirl-polished and fully machined and available with either undercut heads or straight stems.

4.5 out of 5 stars ( 2 )

$489.59

$465.11

On Sale

Manley Severe Duty Pro Flo Series Stainless Steel Valves

Manley Severe Duty Pro Flo Series intake and exhaust 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 fully machined and swirl polished, and offer improved flow with undercut "Pro Flo" stems. Many size options are available, for applications from 1955 and up.

5.0 out of 5 stars ( 5 )

$286.72

—

$296.64

$272.38

—

$281.81

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