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Manley Severe Duty Series Stainless Steel Valves 11813-1
Part Number: MAN-11813-1
Manley Severe Duty Series Stainless Steel Valves
Valve, Exhaust, XH-428 Stainless, 1.810 in. Diameter, .3415 in. Stem, 5.369 in. Length, Each
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Estimated Ship Date: Oct 21, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
11813-1
Part Type:
Product Line:
Summit Racing Part Number:
MAN-11813-1
UPC:
807298053073
Valve Position:
Exhaust
Exhaust Valve Head Diameter (in.):
1.810 in.
Exhaust Valve Head Diameter (mm):
45.974mm
Exhaust Valve Stem Diameter (in.):
0.342 in.
Exhaust Valve Stem Diameter (mm):
8.69mm
Exhaust Overall Valve Length (in.):
5.369 in.
Exhaust Overall Valve Length (mm):
136.372mm
Undercut Stem:
No
Swirl-Polished:
Yes
Valve Tip Length (in.):
0.250 in.
Valve Tip Length (mm):
6.350mm
Valve Material:
XH-426 stainless steel
Lock Groove Quantity:
1-groove
Lock Groove Style:
Conventional
Approximate Weight (g):
115
Valve Head Style:
7 degree dish
Valve Seat Width (in.):
0.100 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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