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Manley 11850-8 Severe Duty Stainless Steel Intake Valve - 2.020

Part of: Manley Severe Duty Stainless Steel Intake Valve

Other options in this family: Manley 11826-8 Manley 11543-8 Manley 11846-8 Manley 11772-1 Manley 11818-8

Manufacturer

Picture for manufacturer Manley

Part Number

11850-8
8 reviews
Sale Price

$301.07

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The Manley 11850-8 is a severe duty performance intake valve engineered for high-performance race engines. Constructed from premium NK-844 stainless steel, this valve features a chrome-plated stem and hardened valve tip for maximum durability under extreme racing conditions.

Key Specifications:

  • Head diameter: 2.020 inches
  • Stem diameter: 0.3415 inches (11/32)
  • Overall length: 5.015 inches
  • Installed height: 0.100 inches longer than stock
  • Tip length: 0.250 inches
  • Underhead angle/radius: 10 degrees x 3/8 inch
  • Margin: 0.070 inches
  • Seat width: 0.080 inches
  • Top of head: 7 degree dish
  • Weight: 113 grams

Performance Features:

  • NK-844 stainless steel construction for superior strength and heat resistance
  • Swirl polished finish for optimal airflow characteristics
  • Fully machined for precision fitment
  • Straight stem design for increased durability and valve guide life
  • Chrome stem coating reduces friction and wear
  • Hardened valve tip withstands high-stress rocker arm contact

This race-grade intake valve is ideal for engine builders seeking reliability and performance in demanding competition applications.

Products specifications

Approximate Weight (g)

142

Lock Groove Quantity

1-groove

Lock Groove Style

Conventional

Overall Valve Length (in)

5.344 in.

Overall Valve Length (mm)

135.738mm

Quantity

Sold as a set of 8.

Swirl Polished

Yes

Undercut Stem

No

Valve Head Diameter (in)

2.250 in.

Valve Head Diameter (mm)

57.100mm

Valve Head Style

7 degree dish

Valve Material

NK-844 stainless steel

Valve Seat Width (in)

0.080 in.

Valve Stem Diameter (in)

0.341 in.

Valve Stem Diameter (mm)

8.661mm

Valve Tip Length (in)

0.250 in.

Valve Tip Length (mm)

6.350mm

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