My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

Manley 11311-8 NK-842 Stainless Steel Pro Flo Intake Valve 2.000in Head

(2005-2010 Jeep Grand Cherokee)

Manufacturer

Picture for manufacturer Manley

Part Number

11311-8
9 reviews
Sale Price

$188.69

Estimated ship date Friday, November 27

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Manley 11311-8 Race Series Exhaust Valve is a high-performance stainless steel engine valve engineered for bracket racing, oval track competition, and demanding high-performance street applications. Built from XH-426 stainless steel with a chrome stem and hardened valve tip, this valve delivers the material strength and precision machining required for engines operating at elevated RPM and temperature.

Key Features:

  • XH-426 stainless steel construction for superior high-temperature strength and durability
  • Chrome-coated stem for enhanced wear resistance and precise guide clearance
  • Hardened valve tip for long-term durability under aggressive rocker arm contact
  • Swirl-polished underhead area to reduce drag and optimize exhaust gas flow
  • Fully machined combustion face for consistent seating and sealing
  • Stock installed height for straightforward installation without valvetrain geometry changes

Specifications:

  • Valve Type: Exhaust
  • Head Diameter: 1.735 in.
  • Stem Diameter: 0.3715 in.
  • Overall Length: 5.105 in.
  • Tip Length: 0.225 in.
  • Underhead Angle/Radius: 15° x 1/2 in.
  • Margin: 0.080 in.
  • Seat Width: 0.100 in.
  • Top of Head: 9° Dish
  • Installed Height: Stock
  • Weight: 115 grams per valve

Note: Verify existing valve head diameter and stem diameter against your cylinder head specifications before ordering. Valve guide clearances should be confirmed and sized appropriately for the Manley stem diameter listed.

Products specifications

Fits

2005-2010 Jeep Grand Cherokee

Approximate Weight (g)

115

Lock Groove Quantity

1-groove

Lock Groove Style

Conventional

Overall Valve Length (in)

5.105 in.

Overall Valve Length (mm)

129.7mm

Quantity

Sold as a set of 8.

Swirl Polished

Yes

Undercut Stem

No

Valve Head Diameter (in)

1.735 in.

Valve Head Diameter (mm)

44.1mm

Valve Head Style

9 degree dish

Valve Material

XH-426 stainless steel

Valve Seat Width (in)

0.100 in.

Valve Stem Diameter (in)

0.372 in.

Valve Stem Diameter (mm)

9.4mm

Valve Tip Length (in)

0.225 in.

Valve Tip Length (mm)

5.72mm

best price on the net, GREAT communication.....

Let you know after I get my product I have received my goods and all is well great job guys

Excellent service and communication.

I got the items exactly as described with VERY fast shipping. i highly recommend them to everyone. And I will definitely be shopping there again!

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

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.

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy