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Manley 11331-8 Pro Flo Intake Valve 2.000in Head NK-842 Stainless Steel

Manufacturer

Picture for manufacturer Manley

Part Number

11331-8
7 reviews
Sale Price

$188.69

2 left at this price

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Usually delivered within 2 days

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Fitment guaranteed

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Product Details

The Manley 11331-8 is a Race Series Pro Flo intake valve engineered for bracket racing, oval track, and high-performance street engine applications. Manufactured from NK-842 stainless steel with a chrome-plated stem and hardened valve tip, these valves are swirl-polished and fully machined for superior durability and flow characteristics.

The undercut stem design reduces restriction and promotes increased airflow through the port, while the 12-degree x 3/8 in. Pro Flo underhead angle/radius further optimizes flow performance. Each valve features a 7-degree dish top-of-head profile and is precision-machined to exacting tolerances.

Valve Specifications:

  • Valve Type: Intake
  • Head Diameter: 2.000 in.
  • Stem Diameter: 0.3415 in. (11/32)
  • Overall Length: 4.900 in.
  • Tip Length: 0.250 in.
  • Installed Height: Stock
  • Underhead Angle/Radius: 12 degrees x 3/8 in. (Pro Flo)
  • Margin: 0.050 in.
  • Seat Width: 0.080 in.
  • Top of Head: 7-Degree Dish
  • Weight: 109 grams (approx. 0.240 lbs) per valve
  • Material: NK-842 Stainless Steel with Chrome Stem and Hardened Tip

Note: Measure existing valve head and stem diameter prior to ordering to ensure correct fitment.

Products specifications

Approximate Weight (g)

112

Lock Groove Quantity

1-groove

Lock Groove Style

Conventional

Overall Valve Length (in)

5.165 in.

Overall Valve Length (mm)

131.2mm

Quantity

Sold as a set of 8.

Swirl Polished

Yes

Undercut Stem

No

Valve Head Diameter (in)

1.625 in.

Valve Head Diameter (mm)

41.3mm

Valve Head Style

9 degree dish

Valve Material

XH-426 stainless steel

Valve Seat Width (in)

0.100 in.

Valve Stem Diameter (in)

0.342 in.

Valve Stem Diameter (mm)

8.7mm

Valve Tip Length (in)

0.290 in.

Valve Tip Length (mm)

7.37mm

Excellent service and communication.

Great prices, clear information and fast shipping!

Great price. Very happy with order. Will buy from them again.

Thanks for the great price

Super fast shipping, exactly as ordered, no drama, problems or complications

Return customer with a few more future purchases in mind...best price plus quick shipping means these guys are just that good!

Although there was a mix up with the shipping on my order customer service was helpful and expedited the solution and made it worth my trouble. I will be keeping Autoplicity in mind for any other parts I might need for my Jeep.

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