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Supertech Performance HIVN-1022D Black Nitrided Intake Valve Oversize - 1mm

(2002-2009, 2012-2014 Honda Civic; 2003-2008 Honda Accord; 2002-2008, 2012-2014 Honda CR-V; 2003-2008 Honda Element; 2002-2006 Acura RSX + 2 more models)

Manufacturer

Picture for manufacturer Supertech Performance

Part Number

HIVN-1022D
7 reviews
Sale Price

$20.11

Estimated ship date Saturday, November 21

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Product Details

The Supertech Performance HIVN-1022D is a Black Nitrided, +1mm oversize intake valve engineered for Honda and Acura K20/K24 engines. Manufactured from one-piece forged EV8 (21-4N) stainless steel, this dished intake valve delivers the strength, dimensional precision, and heat resistance demanded by high-performance and race applications.

Key Specifications:

  • Valve Type: Intake
  • Head Diameter: 36.00mm (+1mm oversize)
  • Stem Diameter: 5.48mm
  • Length: 108.85mm (4.285 in)
  • Material: Stainless Steel 21-4N (EV8)
  • Finish: Black Nitrided
  • Groove Type: Single Groove
  • Face Profile: Dished

Black Nitride Coating Advantages:

  • Surface microhardness of 800HV minimum — harder than the stainless steel base material while retaining excellent ductility beneath the nitrided layer
  • Smoother surface finish than chrome-coated stems, reducing friction between the valve stem and guide
  • Nitride treatment is bonded at a microscopic level and will not flake or crack, even under high-impact conditions
  • Applied to the entire valve, unlike chrome coating which covers only the stem

Construction & Quality:

  • One-piece forged design for superior strength and long-term reliability
  • Heat-treated to the precise hardness specification required for performance applications
  • Manufactured in the United States by Supertech Performance, based in San Jose, California

Sold individually (per valve). Order the quantity matching your engine's total intake valve count — for example, order 8 for a typical 4-cylinder engine with 2 intake valves per cylinder.

Products specifications

Fits

2002-2009, 2012-2014 Honda Civic; 2003-2008 Honda Accord; 2002-2008, 2012-2014 Honda CR-V; 2003-2008 Honda Element; 2002-2006 Acura RSX; 2004-2014 Acura TSX; 2013-2014 Acura ILX

Head Dia

36.00mm (+1.0)

Length

108.85mm

Material

Black Nitrided

Stem Dia

5.48mm

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