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Manley Ford Coyote 5.0L 31mm Extreme Duty Exhaust Valves (Set of 8)

SKU: MAN12623-8

Valves

MAN Extreme Duty Valves

Manley Ford Coyote 5.0L 31mm Extreme Duty Exhaust Valves (Set of 8)

SKU: MAN12623-8

Valves

MAN Extreme Duty Valves

A$1,012.89
Available from MFR. This item is available from the manufacturer's distribution centre. The dispatch timeframe shown is an estimate based on historical order processing and release times for this part. This item is not held in our own warehouse, and actual dispatch timing may vary depending on manufacturer workload and logistics at the time of ordering.
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Description

Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted carburetor circle track competitors, these valves are your ticket to unparalleled performance.

Part Type

Engine Exhaust Valve

Data: v4.2 - Upd: 2026-09-29 08:00:32

Features

  • Built to Last: Featuring chrome stems and hard tips for exceptional longevity and wear resistance.
  • Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.
  • Optimized Performance: Swirl polished under head areas and fully machined combustion faces improve airflow and combustion efficiency.
  • XH-432 XtremeAlloy: The hallmark of excellence in exhaust valve material construction.

Specifications

Product Attributes - Brand
Manley
Product Attributes - Manufacturer's Part Number
12623-8
Product Attributes - Part Type
Valves
Product Attributes - Product Line
Manley Extreme Duty Series Stainless Steel Valves
Product Attributes - UPC
807298093970
Product Attributes - Valve Position
Exhaust
Product Attributes - Exhaust Valve Head Diameter (in.)
1.220 in.
Product Attributes - Exhaust Valve Head Diameter (mm)
31.000mm
Product Attributes - Exhaust Valve Stem Diameter (in.)
0.234 in.
Product Attributes - Exhaust Valve Stem Diameter (mm)
5.94mm
Product Attributes - Exhaust Overall Valve Length (in.)
4.274 in.
Product Attributes - Exhaust Overall Valve Length (mm)
108.560mm
Product Attributes - Undercut Stem
No
Product Attributes - Swirl-Polished
Yes
Product Attributes - Valve Tip Length (in.)
0.305 in.
Product Attributes - Valve Tip Length (mm)
7.747mm
Product Attributes - Valve Material
Stainless steel
Product Attributes - Lock Groove Quantity
3-groove
Product Attributes - Lock Groove Style
Conventional
Product Attributes - Approximate Weight (g)
46
Product Attributes - Valve Head Style
20 degree dish
Product Attributes - Valve Seat Width (in.)
0.080 in.
Product Attributes - Quantity
Sold as a set of 8.
Product Attributes - Notes
Fits Gen I and Gen II DOHC 4 Valve Coyote engines.

Reference Information

Brand Name/s Manley Performance
StreetFX SKU man12623-8
SFX Item ID 4060750
Supplier Item Code 4060750
Manufacturer SKU 12623-8
Manufacturer UPC 807298093970
Alternative References 5.0L, 31mm

Compatibility

Application Data
  • Valve FitmentSearch by engine
    MakeFORD
    Beginning Year2011
    Ending Year2023
    Engine TypeV8
    Engine Size5.0L/302
    Engine FamilyFord modular V8
    Valve Installed LengthStock
    Cylinder Head TypeFord modular 4V
    Application NotesFits Gen I and Gen II DOHC 4 Valve Coyote engines.

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