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Manley 11808-8 Race Series Stainless Steel Intake Valve Stem - 2.080 11/32

(2014-2018 BMW X5)

Part of: Manley Race Series Stainless Steel Intake Valve Stem

Other options in this family: Manley 11318-8 Manley 11526-8 Manley 11305-8 Manley 11302-8 Manley 11515-8

Manufacturer

Picture for manufacturer Manley

Part Number

11808-8
4 reviews
Sale Price

$188.69

Estimated ship date Friday, November 20

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Fitment guaranteed

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Product Details

The Manley 11808-8 is a high-performance race series intake valve designed for bracket oval track racing and high-performance street engines. Manufactured from premium NK-842 stainless steel, this valve features a chrome-plated stem and hardened tip for exceptional durability and wear resistance.

Key Specifications:

  • Valve Type: Intake
  • Head Diameter: 2.080 inches
  • Stem Diameter: 0.3415 inches (11/32")
  • Overall Length: 4.940 inches
  • Installed Height: Stock replacement
  • Tip Length: 0.290 inches
  • Underhead Angle/Radius: 10 degrees x 3/8 inch
  • Margin: 0.065 inches
  • Seat Width: 0.080 inches
  • Top of Head: 5 degree dish
  • Weight: 114 grams (0.25 lbs)

Construction Features:

  • NK-842 stainless steel construction for superior strength and heat resistance
  • Chrome-plated stem reduces friction and wear
  • Hardened valve tip extends service life
  • Swirl polished finish for smooth operation
  • Fully machined with straight stem for precision fit

This race series valve delivers the reliability and performance demanded by competitive racing applications while maintaining compatibility with high-performance street builds. Always measure your existing valve head and stem diameter before ordering to ensure proper fitment.

Products specifications

Fits

2014-2018 BMW X5

Approximate Weight (g)

124

Lock Groove Quantity

1-groove

Lock Groove Style

Conventional

Overall Valve Length (in)

4.940 in.

Overall Valve Length (mm)

125.476mm

Quantity

Sold as a set of 8.

Swirl Polished

Yes

Undercut Stem

No

Valve Head Diameter (in)

2.080 in.

Valve Head Diameter (mm)

52.832mm

Valve Head Style

5 degree dish

Valve Material

NK-842 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)

0.290 in.

Valve Tip Length (mm)

7.366mm

Very fast shipping. Low price too.

Prices were good and the order shipped promptly. The email notice of shipment was a little late. It came after the order had arrived.

So far all is well. I am very happy. Just a side note, I did just place my order. I haven't actually received the product. This is an update. I am a very happy shopper. The only complaint I have is when I would check on my order to see if it had been ship

Nobody else had part in stock. Instant shipping and a good price. Will do business again!

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