Australia-wide shipping on performance, 4x4 and vehicle-specific upgrades.

Manley Severe Duty Series Stainless Steel Valves 11850-1 Valve, Intake, Steel, 2.250 in. Diameter, .341 in. Stem, 5.344 in. Length, Chevy, Each

SKU: MAN11850-1

Valves

Manley Severe Duty Series Stainless Steel Valves 11850-1 Valve, Intake, Steel, 2.250 in. Diameter, .341 in. Stem, 5.344 in. Length, Chevy, Each

SKU: MAN11850-1

Valves
A$103.97
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.
View cart
We accept
American Express
Mastercard
Visa
PayPal Checkout
Direct Deposit
Afterpay
Apple Pay
Google Pay
Zip Pay

Description

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.

Part Type

BBC S/D 2.250in Intake Valve

Data: v4.2 - Upd: 2026-09-29 08:02:50

Specifications

Product Attributes - Brand
Manley
Product Attributes - Manufacturer's Part Number
11850-1
Product Attributes - Part Type
Valves
Product Attributes - Product Line
Manley Severe Duty Series Stainless Steel Valves
Product Attributes - UPC
807298053998
Product Attributes - Valve Position
Intake
Product Attributes - Intake Valve Head Diameter (in.)
2.250 in.
Product Attributes - Intake Valve Head Diameter (mm)
57.100mm
Product Attributes - Intake Valve Stem Diameter (in.)
0.341 in.
Product Attributes - Intake Valve Stem Diameter (mm)
8.66mm
Product Attributes - Intake Overall Valve Length (in.)
5.344 in.
Product Attributes - Intake Overall Valve Length (mm)
135.738mm
Product Attributes - Undercut Stem
No
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
NK-844 stainless steel
Product Attributes - Lock Groove Quantity
1-groove
Product Attributes - Lock Groove Style
Conventional
Product Attributes - Approximate Weight (g)
142
Product Attributes - Valve Head Style
7 degree dish
Product Attributes - Valve Seat Width (in.)
0.080 in.
Product Attributes - Quantity
Sold individually.

Reference Information

Brand Name/s Manley Performance
StreetFX SKU man11850-1
SFX Item ID 4931330
Supplier Item Code 4931330
Manufacturer SKU 11850-1
Manufacturer UPC 807298053998

Compatibility

Application Data
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year1966
    Ending Year1969
    Engine TypeV8
    Engine Size7.0L/427
    Engine FamilyChevy big block Mark IV
    Valve Installed LengthStock
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year1966
    Ending Year1970
    Engine TypeV8
    Engine Size6.5L/396
    Engine FamilyChevy big block Mark IV
    Valve Installed LengthStock
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year1970
    Ending Year1972
    Engine TypeV8
    Engine Size6.6L/402
    Engine FamilyChevy big block Mark IV
    Valve Installed LengthStock
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year1970
    Ending Year1990
    Engine TypeV8
    Engine Size7.4L/454
    Engine FamilyChevy big block Mark IV
    Valve Installed LengthStock
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year1991
    Ending Year1995
    Engine TypeV8
    Engine Size7.4L/454
    Engine FamilyChevy big block Gen V
    Valve Installed LengthStock
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year1996
    Ending Year2000
    Engine TypeV8
    Engine Size7.4L/454
    Engine FamilyChevy big block Gen VI
    Valve Installed LengthStock

Loading compatibility information...

Keep shopping

More from Manley Performance