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Manley 10777-1 Exhaust Valve 1.500" Head 11/32" Stem Stainless Steel

(2000-2005 Lexus IS)

Manufacturer

Picture for manufacturer Manley

Part Number

10777-1
7 reviews
Sale Price

$18.22

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Fitment guaranteed

Fitment guaranteed

Product Details

The Manley 10777-1 is a premium street series exhaust valve engineered for performance and durability. Constructed from XH-424 stainless steel with a chrome stem and hardened valve tip, this valve delivers superior quality compared to budget replacement valves through advanced materials and heat treatment processes.

Key Specifications:

  • Valve Type: Exhaust
  • Head Diameter: 1.500 inches
  • Stem Diameter: .3415 inches (11/32)
  • Overall Length: 4.911 inches
  • Tip Length: .250 inches
  • Underhead Angle/Radius: 15 degrees x 1/2 inch
  • Margin: .060 inches
  • Seat Width: .100 inches
  • Top of Head: 10 degree dish
  • Weight: 96 grams
  • Installed Height: Stock

Quality Features:

  • XH-424 stainless steel construction for maximum strength and heat resistance
  • Chrome stem finish for reduced friction and wear
  • Hardened valve tip for extended service life
  • Swirl polished finish for smooth operation
  • Fully machined with straight stem design

This street series valve offers an excellent balance of performance and value, making it ideal for enthusiasts seeking OEM-plus quality without premium racing valve pricing. Always measure your existing valve head and stem diameter before ordering to ensure proper fitment.

Products specifications

Fits

2000-2005 Lexus IS

Approximate Weight (g)

96

Lock Groove Quantity

2-groove

Lock Groove Style

Conventional

Overall Valve Length (in)

4.911 in.

Overall Valve Length (mm)

124.739mm

Quantity

Sold individually.

Swirl Polished

Yes

Undercut Stem

No

Valve Head Diameter (in)

1.500 in.

Valve Head Diameter (mm)

38.100mm

Valve Head Style

10 degree dish

Valve Material

XH-424 stainless steel

Valve Seat Width (in)

0.100 in.

Valve Stem Diameter (in)

0.341 in.

Valve Stem Diameter (mm)

8.661mm

Valve Tip Length (in)

0.250 in.

Valve Tip Length (mm)

6.350mm

Prices are among the lowest around. Had a change with my order. Customer support team was quick to respond to emails and make corrections. Will order from Autoplicity again.

Very easy to find and purchase what I needed. It showed up at a reasonable time.

Great price, good e-mail communication and fast shipping. Positive experience with Autoplicity so far.

Prices are great on this site. The layout and checkout process are easy to use; Google checkout is definitely a plus. Shipping could be a little faster, especially if they had drop ships from their supplies for items not currently in stock. Overall good service and no problems.

I bought this item for my fiance and he loves it! He was completely happy with the price we paid...

Autoplicity has made my parts search so much easier. With the best price gurantee, i can now make autoplicity my one-stop shop for all my parts needs.

Good site easy to search for and find parts. The lowest prices on almost every part I have been able to find for my truck.

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