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Manley Race Master Valves 12353-1 Valves, Exhaust, Stainless Steel, 1.600 in. Diameter, .3136 in. Stem, 5.215 in. Length, Chevy, LS3, LS99, Each

SKU: MAN12353-1

Valves

Manley Race Master Valves 12353-1 Valves, Exhaust, Stainless Steel, 1.600 in. Diameter, .3136 in. Stem, 5.215 in. Length, Chevy, LS3, LS99, Each

SKU: MAN12353-1

Valves
A$74.56
BACKORDER This item will be special ordered in for you. Contact us prior to purchase if you require an ETA.
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Description

Manley Race Master valves are designed and engineered to withstand the abuse of the track. Race Master valves are targeted by the bracket, drag, and oval track racers, or even those with modified street engines that are operating at engine speeds below 8,000 rpm. These valves are constructed from XH-426 material for the exhaust and NK-842 for the intake valves, making them the strongest valves in their class. Whether everything is on the line at the track, or you just enjoy your high performance car or motorcycle on the street, trust Race Master valves by Manley to keep you on the move. Order the model designed for your vehicle year/make and engine application.

Part Type

Valves

Data: v4.2 - Upd: 2026-10-14 10:07:18

Specifications

Product Attributes - Brand
Manley
Product Attributes - Manufacturer's Part Number
12353-1
Product Attributes - Part Type
Valves
Product Attributes - Product Line
Manley Race Master Valves
Product Attributes - UPC
807298105864
Product Attributes - Valve Position
Exhaust
Product Attributes - Exhaust Valve Head Diameter (in.)
1.600 in.
Product Attributes - Exhaust Valve Head Diameter (mm)
40.640mm
Product Attributes - Exhaust Valve Stem Diameter (in.)
0.314 in.
Product Attributes - Exhaust Valve Stem Diameter (mm)
7.98mm
Product Attributes - Exhaust Overall Valve Length (in.)
5.215 in.
Product Attributes - Exhaust Overall Valve Length (mm)
132.461mm
Product Attributes - Undercut Stem
No
Product Attributes - Swirl-Polished
Yes
Product Attributes - Valve Tip Length (in.)
0.160 in.
Product Attributes - Valve Tip Length (mm)
4.064mm
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)
95
Product Attributes - Valve Head Style
18 degree dish
Product Attributes - Valve Seat Width (in.)
0.115 in.
Product Attributes - Quantity
Sold individually.

Reference Information

Brand Name/s Manley Performance
StreetFX SKU man12353-1
SFX Item ID 4932096
Supplier Item Code 4932096
Manufacturer SKU 12353-1
Manufacturer UPC 807298105864
Alternative References LS3, LS99

Compatibility

Application Data
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year2008
    Ending Year2017
    Engine TypeV8
    Engine Size6.2L/376
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Valve Installed Length0.300 in. over
    Cylinder Head TypeL92

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