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Manley Race Series Stainless Steel Valves 11521-1 Valve, Exhaust, Steel, 1.500 in. Diameter, .341 in. Stem, 4.911 in. Length, Chevy, Each

SKU: MAN11521-1

Valves

Manley Race Series Stainless Steel Valves 11521-1 Valve, Exhaust, Steel, 1.500 in. Diameter, .341 in. Stem, 4.911 in. Length, Chevy, Each

SKU: MAN11521-1

Valves
A$69.24
LOW STOCK! Est Ship 4-7 days. HURRY! LOW STOCK. This item is in limited stock at one of our distribution centres. The ETA is the approximate time required to prepare your order for dispatch.
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Description

Manley Race series performance valves are a great choice for your bracket, oval track, or high performance street engine. All valves are made from stainless steel (intakes are NK-842; exhausts are XH-426) with chrome stems and hardened valve tips. In addition to being made from high-quality materials, Race series valves are swirl polished and fully machined.

Part Type

SBC R/F 1.500in Exhaust Valve

Data: v4.2 - Upd: 2026-10-14 10:06:18

Specifications

Product Attributes - Brand
Manley
Product Attributes - Manufacturer's Part Number
11521-1
Product Attributes - Part Type
Valves
Product Attributes - Product Line
Manley Race Series Stainless Steel Valves
Product Attributes - UPC
807298049472
Product Attributes - Valve Position
Exhaust
Product Attributes - Exhaust Valve Head Diameter (in.)
1.500 in.
Product Attributes - Exhaust Valve Head Diameter (mm)
38.100mm
Product Attributes - Exhaust Valve Stem Diameter (in.)
0.341 in.
Product Attributes - Exhaust Valve Stem Diameter (mm)
8.66mm
Product Attributes - Exhaust Overall Valve Length (in.)
4.911 in.
Product Attributes - Exhaust Overall Valve Length (mm)
124.739mm
Product Attributes - Undercut Stem
Yes
Product Attributes - Swirl-Polished
Yes
Product Attributes - Valve Tip Length (in.)
0.250 in.
Product Attributes - Valve Tip Length (mm)
6.350mm
Product Attributes - Valve Material
XH-426 stainless steel
Product Attributes - Lock Groove Quantity
1-groove
Product Attributes - Lock Groove Style
Conventional
Product Attributes - Approximate Weight (g)
89
Product Attributes - Valve Head Style
7 degree dish
Product Attributes - Valve Seat Width (in.)
0.100 in.
Product Attributes - Quantity
Sold individually.

Reference Information

Brand Name/s Manley Performance
StreetFX SKU man11521-1
SFX Item ID 4932703
Supplier Item Code 4932703
Manufacturer SKU 11521-1
Manufacturer UPC 807298049472

Compatibility

Application Data
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year1957
    Ending Year1967
    Engine TypeV8
    Engine Size4.6L/283
    Engine FamilyChevy small block Gen I
    Valve Installed LengthStock
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year1976
    Ending Year1999
    Engine TypeV8
    Engine Size5.0L/305
    Engine FamilyChevy small block Gen I
    Valve Installed LengthStock

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