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Manley Severe Duty Series Stainless Steel Valves 11842-8
Part Number: MAN-11842-8
Manley Severe Duty Series Stainless Steel Valves
Valves, Intake, Stainless Steel, 2.300 in. Diameter, .341 in. Stem, 5.344 in. Length, Chevy, Set of 8
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Estimated Ship Date: Mar 31, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
11842-8
Part Type:
Product Line:
Summit Racing Part Number:
MAN-11842-8
UPC:
807298053790
Valve Position:
Intake
Intake Valve Head Diameter (in.):
2.300 in.
Intake Valve Head Diameter (mm):
58.420mm
Intake Valve Stem Diameter (in.):
0.341 in.
Intake Valve Stem Diameter (mm):
8.66mm
Intake Overall Valve Length (in.):
5.344 in.
Intake Overall Valve Length (mm):
135.738mm
Undercut Stem:
No
Swirl-Polished:
Yes
Valve Tip Length (in.):
0.250 in.
Valve Tip Length (mm):
6.350mm
Valve Material:
NK-844 stainless steel
Lock Groove Quantity:
1-groove
Lock Groove Style:
Conventional
Approximate Weight (g):
146
Valve Head Style:
5 degree dish
Valve Seat Width (in.):
0.080 in.
Quantity:
Sold as a set of 8.
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.
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