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Manley 11342-8 Race Master NK-842 Stainless Steel Intake Valves

Manufacturer

Picture for manufacturer Manley

Part Number

11342-8
6 reviews
Sale Price

$188.69

2 left at this price

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Usually delivered within 2 days

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No Hassle Returns

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Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Manley 11342-8 Race Master stainless steel intake valves are engineered for bracket racing, oval track, and high-performance street engines operating under 8,000 RPM. Built from NK-842 stainless steel, these intake valves deliver superior fatigue strength and durability compared to standard EV-8 alloy (21-4N) valves, at a highly competitive price point.

Key Specifications:

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

Key Features:

  • NK-842 Stainless Steel Construction — Provides exceptional fatigue strength and long-term durability for performance and racing applications
  • Hard-Coated Chrome Stems — Stems are coated with 0.0002 in. thick chrome for superior wear resistance, not a thin flash coating
  • Hardened Valve Tips — Precision-hardened tips resist wear and outlast competitors' puddle-stellite alternatives
  • Swirl Polished Under-Head — Polished under-head area promotes improved airflow into the combustion chamber
  • Fully Machined Combustion Face — Precisely machined for optimized combustion efficiency
  • Undercut Pro Flo Stem — The undercut stem profile reduces restriction at the port entrance for maximum flow

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

Products specifications

Approximate Weight (g)

132

Lock Groove Quantity

1-groove

Lock Groove Style

Conventional

Overall Valve Length (in)

5.140 in.

Overall Valve Length (mm)

130.6mm

Quantity

Sold as a set of 8.

Swirl Polished

Yes

Undercut Stem

No

Valve Head Diameter (in)

2.125 in.

Valve Head Diameter (mm)

54.0mm

Valve Head Style

7 degree dish

Valve Material

NK-842 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)

0.290 in.

Valve Tip Length (mm)

7.37mm

Nice

I sent my order for some comp cams lifters on Monday 1-16-2012 at around 8:30 and the Item was still shipped on the next day Tuesday. This was awesome. I received my product on 1-19-2012. They have had the fastest turn around time that I have ever delt with. I would highly recommend them for your auto parts needs. They also had the cheapest price I could fine, including the shipping fee.<br>I like the fact that they sent me an e-mail that my item had shipped and gave the shipping number for tracking.

Very happy with my purchase and product from Autoplicity! Highly recommend.

Very high level of responsive customer service, wow! And the items arrived immediately, so fast I thought there might be a mistake. :D<br>thx Sean!

Great seller, price, and shipping was fast. I will do business with again.

Autoplicity had the part I needed at the best price I could find anywhere, and with their quick shipping I had the part in less than a week. Thanks Autoplicity

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