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Manley Chrysler Hemi 6.4L (1.654) Race Master Exhaust Valves (Set of 8)

SKU: MAN12331B-8

Valves

MAN Race Master Valves...

Manley Chrysler Hemi 6.4L (1.654) Race Master Exhaust Valves (Set of 8)

SKU: MAN12331B-8

Valves

MAN Race Master Valves...

A$417.55
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.
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Description

Manley Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM.

Part Type

Engine Exhaust Valve

Data: v4.2 - Upd: 2026-10-13 17:06:32

Features

  • Chrome Stems and Hard Tips: Chrome stems and hard tips are incorporated for enhanced longevity and wear resistance.
  • Recommended for Alcohol Engines: These valves are the recommended choice for exhaust valves in alcohol engines, ensuring reliable performance even in demanding conditions.
  • Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.
  • Swirl Polished and Fully Machined: The valves feature swirl polished under head areas and fully machined combustion faces to optimize airflow and combustion efficiency.
  • Variety of Shapes: Choose between Race Master (Straight Stem) and Race Flo shapes to suit your racing engine's specific requirements.

Specifications

Product Attributes - Brand
Manley
Product Attributes - Manufacturer's Part Number
12331B-8
Product Attributes - Part Type
Valves
Product Attributes - Product Line
Manley Race Master Valves
Product Attributes - UPC
807298079301
Product Attributes - Valve Position
Exhaust
Product Attributes - Exhaust Valve Head Diameter (in.)
1.654 in.
Product Attributes - Exhaust Valve Head Diameter (mm)
42.012mm
Product Attributes - Exhaust Valve Stem Diameter (in.)
0.313 in.
Product Attributes - Exhaust Valve Stem Diameter (mm)
7.95mm
Product Attributes - Exhaust Overall Valve Length (in.)
5.100 in.
Product Attributes - Exhaust Overall Valve Length (mm)
129.540mm
Product Attributes - Undercut Stem
No
Product Attributes - Swirl-Polished
Yes
Product Attributes - Valve Tip Length (in.)
0.130 in.
Product Attributes - Valve Tip Length (mm)
3.302mm
Product Attributes - Valve Material
XH-426 stainless steel
Product Attributes - Lock Groove Quantity
3-groove
Product Attributes - Lock Groove Style
Conventional
Product Attributes - Approximate Weight (g)
103
Product Attributes - Valve Head Style
20 degree dish
Product Attributes - Valve Seat Width (in.)
0.100 in.
Product Attributes - Quantity
Sold as a set of 8.

Reference Information

Brand Name/s Manley Performance
StreetFX SKU man12331B-8
SFX Item ID 4061587
Supplier Item Code 4061587
Manufacturer SKU 12331B-8
Manufacturer UPC 807298079301
Alternative References 6.4L

Compatibility

Application Data
  • Valve FitmentSearch by engine
    MakeCHRYSLER
    Beginning Year2012
    Ending Year2014
    Engine TypeV8
    Engine Size6.4L/392
    Engine FamilyMopar Hemi Gen III
    Valve Installed LengthStock
    Cylinder Head TypeStock configuration
  • Valve FitmentSearch by engine
    MakeJEEP
    Beginning Year2012
    Ending Year2023
    Engine TypeV8
    Engine Size6.4L/392
    Engine FamilyMopar Hemi Gen III
    Valve Installed LengthStock
    Cylinder Head TypeStock configuration
  • Valve FitmentSearch by engine
    MakeRAM
    Beginning Year2014
    Ending Year2023
    Engine TypeV8
    Engine Size6.4L/392
    Engine FamilyMopar Hemi Gen III
    Valve Installed LengthStock
    Cylinder Head TypeStock configuration

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