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Manley 11317B-8 Race Series Stainless Steel Intake Valve 2.000 Head 11/32 Stem

Manufacturer

Picture for manufacturer Manley

Part Number

11317B-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 11317B-8 is a high-performance intake valve engineered for bracket racing, oval track, and high-performance street applications. Constructed from premium NK-842 stainless steel, this valve features a chrome-plated stem and hardened valve tip for exceptional durability and wear resistance.

Key Specifications:

  • Valve Type: Intake
  • Head Diameter: 2.000 inches
  • Stem Diameter: 0.3415 inches (11/32)
  • Overall Length: 4.900 inches
  • Tip Length: 0.250 inches
  • Installed Height: Stock
  • Underhead Angle/Radius: 12 degrees x 3/8 inch (Pro Flo design)
  • Margin: 0.050 inches
  • Seat Width: 0.080 inches
  • Top of Head: 7 degree dish
  • Weight: 109 grams

Performance Features:

  • NK-842 stainless steel construction for superior strength and heat resistance
  • Chrome stem finish for reduced friction and extended guide life
  • Hardened valve tip to prevent wear from rocker arm contact
  • Swirl polished finish for smooth operation
  • Fully machined with undercut stem design to maximize airflow
  • Pro Flo underhead configuration optimizes combustion chamber efficiency

This race series valve delivers the reliability and performance demanded by competitive engines while remaining suitable for aggressive street builds. The undercut stem design reduces weight in the critical flow area, improving cylinder filling at high RPM. Always measure your existing valve head and stem diameters before ordering to ensure proper fitment.

Products specifications

Approximate Weight (g)

107

Lock Groove Quantity

1-groove beadlock style

Lock Groove Style

Beadlock

Overall Valve Length (in)

4.865 in.

Overall Valve Length (mm)

123.6mm

Quantity

Sold as a set of 8.

Swirl Polished

Yes

Undercut Stem

No

Valve Head Diameter (in)

1.940 in.

Valve Head Diameter (mm)

49.3mm

Valve Head Style

18 degree dish

Valve Material

XH-426 stainless steel

Valve Seat Width (in)

0.100 in.

Valve Stem Diameter (in)

0.308 in.

Valve Stem Diameter (mm)

7.8mm

Valve Tip Length (in)

0.200 in.

Valve Tip Length (mm)

5.08mm

I ordered a set of inner tie rods for my car from Autoplicity and found their prices to be the lowest online for the brand I was looking for. Items were ship out in 2 business days from the original manufacturer. Shipping prices were kind of on the expensive end considering the package size and weight so if Autoplicity adjust their shipping prices to be more competitive, I think their service and pricing would be hard to beat!

good

I was very pleased with my transaction with Autoplicity. My order was shipped the next day and received the following day. The pricing was also the best I could find. I would definitely buy from them again and recommend them to others.

very prompt service,items were in stock and shipped next day,salesman was helpful and friendly.Will place in favorites and do buisness with again.

Shipped out fast. Prices are very competitive. Couldn't ask for more.

Lowest prices, free and fast shipping, excellent product.

I'll start off saying that Autoplicity's prices are unbeatable...but, I placed my order on a Saturday night (which I know is the weekend)on a in stock part and it took them till the following Thursday to ship it out. I use my truck to make a living and was hoping to get it a little quicker, but now I'm down another 3-4 days till the part gets here. Also, I sent a e-mail on Tuesday evening regaurding my order and never got a response.

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