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Supertech Performance VWIVN-1017 Black Nitride Intake Valve Stainless Steel - 40mm 21-4N

(Volkswagen Jetta 1985-2005, Beetle 1998-2005, Passat 1991-96, Golf 1985-2005, Cabriolet 1985-93, Corrado 1990-92, Cabrio 1995-2002 + 3 more models)

Manufacturer

Picture for manufacturer Supertech Performance

Part Number

VWIVN-1017
18 reviews
Sale Price

$22.58

Estimated ship date Tuesday, November 24

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Product Details

The Supertech Performance VWIVN-1017 is a high-performance Black Nitride intake valve engineered for VW 2.0L 8-valve engines. Forged from a single billet of Stainless Steel 21-4N (EV8), this valve delivers exceptional strength, heat resistance, and durability demanded by performance and racing applications.

Valve Specifications:

  • Head Diameter: 40.00mm (standard)
  • Stem Diameter: 7.00mm
  • Overall Length: 91.60mm
  • Material: Stainless Steel 21-4N (EV8)
  • Groove Type: Triple Groove
  • Finish: Black Nitride
  • Valve Type: Intake
  • Profile: Undercut, backcut, and dished head for improved flow

Black Nitride Coating Advantages:

  • Minimum microhardness of 800HV — harder than the base stainless steel material, with good ductility maintained beneath the nitrided layer
  • Smoother surface finish than chrome-coated stems, reducing friction between valve stem and guide
  • Nitrided layer bonds at a microscopic level and will not flake or crack upon valve-to-piston contact
  • Treatment is applied to the entire valve, not just the stem
  • Highly compatible with lead-free fuels, alcohols, and nitro; suitable for use with any seat material including nodular iron

One-Piece Forged Construction:

  • Single-piece forging eliminates weak points associated with multi-piece valve designs
  • Special heat treatment process calibrated for optimal hardness by application
  • Designed for high-flow performance with undercut and backcut geometry for improved cylinder filling

Sold individually — order the quantity equal to the number of intake valves required for your engine build.

Products specifications

Fits

Volkswagen Jetta 1985-2005, Beetle 1998-2005, Passat 1991-96, Golf 1985-2005, Cabriolet 1985-93, Corrado 1990-92, Cabrio 1995-2002, Scirocco 1984-88, Fox 1987-93; Audi 4000 1985-87, 80 1988-90, 90 1988

Head Dia

41.00mm (+1.0)

Length

91.60mm

Material

Black Nitrided

Stem Dia

7.00mm

Good

Easy to use her fast

It was a good experience buying truck parts for my truck & I will definitely buy from them again & they got good deals on parts also

Great product, delivery was fast.

Easy to order

So easy love it

Very fast shipping

Making the right purchase was easy and fast. Love it

I bought an Exedy Organic Clutch at the best price I could find. Shipping was also prompt. Legit dealer, good business.

Great Price!!<br>Fast Shipping!!<br>Would definitely use again....

Great deals at unbeatable prices!

Thank you for the quick turnaround from order to shipping the products I ordered

Found a Thule Vertex bike hitch on here for $50 cheaper than amazon. Extremely fast shipping. Definitely recommend purchasing from here.

Site was very easy to navigate

Great prices, reasonable shipping costs. Shipped within 3 days of order. Didn't receive discount for valid coupon code (25OffShipping). No response to 2 emails. No indication of expected delivery date. Lots of unknowns but you can't beat the pricing.

This was my first order with Autoplicity. I was pleasantly surprised when my order showed up quickly and was exactly what I wanted. I will be buying from this company again. Thanks for the quick service and fair pricing.

SO HAPPY! I have to admit, I was hesitant because I had never heard of autoplicity and there wasn't item a picture up for the Thule T2 rack I bought, but wow am I happy. Autopliicity had it for $100 less than other sites and the shipper was Amazon prime fast!!! Definitely a happy customer!!!!

I ordered a Thule 9002 Raceway Bike Carrier on Sunday, April 8 and received the product by Fedex on Wednesday, April 11 with just regular shipping. That is fast service. And the price was $43 cheaper than any other site on the internet (including shipping). I haven't had a chance to use the bike carrier yet but it appears to be new and as advertised with no issues as of this writing. I would definitely recommend this retailer for your next purchase. Order Number: 9111

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