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Manley Severe Duty Series Stainless Steel Valves 11904B-1
Part Number: MAN-11904B-1
Manley Severe Duty Series Stainless Steel Valves
Valves, Intake, Stainless Steel, 2.250 in. Diameter, .309 in. Stem, 5.424 in. Length, 426 Hemi, Each
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Estimated Ship Date: Oct 26, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
11904B-1
Part Type:
Product Line:
Summit Racing Part Number:
MAN-11904B-1
UPC:
807298066424
Valve Position:
Intake
Intake Valve Head Diameter (in.):
2.250 in.
Intake Valve Head Diameter (mm):
57.150 mm
Intake Valve Stem Diameter (in.):
0.309 in.
Intake Valve Stem Diameter (mm):
7.85mm
Intake Overall Valve Length (in.):
5.424 in.
Intake Overall Valve Length (mm):
137.770mm
Undercut Stem:
No
Swirl-Polished:
Yes
Valve Tip Length (in.):
0.200 in.
Valve Tip Length (mm):
5.080mm
Valve Material:
NK-842 stainless steel
Lock Groove Quantity:
1-groove
Lock Groove Style:
Beadlock
Approximate Weight (g):
136
Valve Head Style:
20 degree dish
Valve Seat Width (in.):
0.095 in.
Quantity:
Sold individually.
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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