My Account
My Garage
Shopping Cart
MY GARAGE Select Vehicle
MY GARAGE

Manley 10556-8 Stainless Steel Exhaust Valve Head Stem - 1.500 11/32

Manufacturer

Part Number

10556-8
Sale Price

$95.12

Estimated ship date Wednesday, November 18

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 10556-8 is a high-quality stainless steel exhaust valve designed to deliver superior performance and durability at an affordable price point. Engineered as part of Manley's budget performance series, this valve features chrome stems and hardened valve tips, with materials and heat treatment processes that exceed OEM replacement standards.

Key Specifications:

  • Valve Type: Exhaust
  • Head Diameter: 1.500 inches
  • Stem Diameter: 0.3415 inches (11/32 inch)
  • Overall Length: 4.911 inches
  • Installed Height: Stock
  • Tip Length: 0.250 inches
  • Underhead Angle/Radius: 15 degrees x 1/2 inch
  • Margin: 0.060 inches
  • Seat Width: 0.100 inches
  • Top of Head: 10 degree dish
  • Weight: 96 grams

Features and Benefits:

  • Constructed from premium stainless steel for excellent heat resistance and longevity
  • Chrome-plated stems reduce friction and wear
  • Hardened valve tips resist valve train impact damage
  • Swirl polished finish for smooth operation
  • Fully machined to precise tolerances
  • Superior material quality and heat treatment compared to OEM valves

Important: Always measure your existing valve head and stem diameter before ordering to ensure proper fitment.

Products specifications

Approximate Weight (g)

113

Lock Groove Quantity

1-groove

Lock Groove Style

Conventional

Overall Valve Length (in)

5.011 in.

Overall Valve Length (mm)

124.7mm

Quantity

Sold as a set of 8.

Swirl Polished

Yes

Undercut Stem

No

Valve Head Diameter (in)

2.055 in.

Valve Head Diameter (mm)

52.2mm

Valve Head Style

6 degree dish

Valve Material

NK-840 stainless steel

Valve Seat Width (in)

0.080 in.

Valve Stem Diameter (in)

0.342 in.

Valve Stem Diameter (mm)

8.7mm

Valve Tip Length (in)

0.250 in.

Valve Tip Length (mm)

6.35mm

Shop around online today and found my product cheaper on autoplicity and chose next day air for shipping with a coupon code, I might add! I'll give a another feedback once I've received it.

Great prices will shop here again.

Excellent on-line merchant with outstanding customer service and the best prices on equipment and shipping. Highly reccomended!

Good prices and easy ordering process (order #18003). The only issue that I had was after placing the order, completing the entire process, I received three emails stating that "We noticed that you started checking out on our site, but didn't quite finish the process". After calling customer service, they ensured me that the order was complete. Since then, I receive the same email(3 emails at a time) on a daily basis. Just a little annoying, but easy enough to delete.

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