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Manley 12856-8 Severe Duty Stainless Steel Intake Valves 2.250" Head 0.311" Stem

Manufacturer

Picture for manufacturer Manley

Part Number

12856-8
7 reviews
Sale Price

$311.48

1 left at this price

delivery box

Usually delivered within 2 days

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Fitment guaranteed

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Product Details

The Manley Severe Duty Series performance valves are engineered for high performance and race engines, delivering exceptional durability and precision machining. These intake valves are constructed from NK-844 stainless steel with chrome stems and hardened valve tips, providing superior strength and longevity under extreme conditions.

Key Specifications:

  • Valve head diameter: 2.250 inches (57.150mm)
  • Valve stem diameter: 0.311 inches (7.90mm)
  • Overall valve length: 5.494 inches (139.548mm)
  • 5 degree dish valve head style
  • Valve tip length: 0.250 inches (6.350mm)
  • Valve seat width: 0.080 inches
  • Single-groove beadlock lock groove style
  • Swirl-polished finish for improved flow
  • Approximate weight: 128 grams per valve

Features:

  • Fully machined and swirl polished for optimal performance
  • Straight stem design (non-undercut)
  • Under head angle/radius: 10 x 3/8 inch
  • Made from superior NK-844 stainless steel material
  • Chrome stems resist wear and friction
  • Hardened tips for extended valve train life

Products specifications

Approximate Weight (g)

128

Lock Groove Quantity

1-groove

Lock Groove Style

Beadlock

Notes

Under head angle/radius 10 x 3/8 in.

Overall Valve Length (in)

5.494 in.

Overall Valve Length (mm)

139.548mm

Quantity

Sold as a set of 8.

Swirl-Polished

Yes

Undercut Stem

No

Valve Head Diameter (in)

2.250 in.

Valve Head Diameter (mm)

57.150mm

Valve Head Style

5 degree dish

Valve Material

Stainless steel

Valve Seat Width (in)

0.080 in.

Valve Stem Diameter (in)

0.311 in.

Valve Stem Diameter (mm)

7.899mm

Valve Tip Length (in)

0.250 in.

Valve Tip Length (mm)

6.350mm

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Purchased my mishimoto heat tape. Cheapest price around and the shipment was delivered in a very reasonable time. Couldnt be happier

Best price on the internet for my parts. Shipped out the next morning.

Very fast shipping, always great prices.

shipped fast, cant wait to put it on the jeep, would buy from here in the future.

I'll admit to being skeptical at first, but the price was worth the risk. Turned out to be one of the best online transactions I've experienced. Received item 3 days after purchaseing and the best price I found. And I looked hard! A+

Rather amazing and uneventful service in this day and age. Ordered a Thule bike rack for my Nissan Murano. It was in stock (unusual for high-end specialty products), shipped the next day, and was on my doorstep in a few days (excellent for a 60 lb. large box). I'd buy anything from these people without any reservation. AND, your order is insured - completely superfluous. Oh, and did I mention, the lowest price I could find ANYWHERE, and not by a few dollars - a lot.

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