Supertech HIVN-1020D-8 – Standard-Size Black-Nitrided Intake Valve Set (Honda K-Series)

Supertech’s HIVN-1020D-8 kit supplies eight 35 mm intake valves for Honda/Acura K-series engines (K20A/K20Z/K24). Each valve is forged from EV8 (21-4N) stainless steel and finished with a Black Nitride surface that improves hardness, lowers stem-to-guide friction, and resists high intake-air temperatures.

Key Features

  • OE-size 35 mm head  direct replacement that drops into factory seats with no machining.

  • Black Nitride coating (~52 HRC) – harder surface and reduced friction for longer guide life and higher RPM stability.

  • One-piece forged stainless construction – excellent fatigue strength and crack resistance.

  • Single-groove keeper – compatible with most Supertech and OEM retainer/spring kits.

  • Precision CNC finishing ensures perfect concentricity and reliable sealing at extreme engine speeds.

Technical Specifications

Parameter Value
Valve type Intake
Head diameter 35.00 mm (STD)
Stem diameter 5.48 mm
Overall length 108.85 mm
Material EV8 (21-4N) stainless steel
Surface treatment Black Nitride
Keeper style Single groove
Pieces per kit 8

Vehicle Compatibility

Brand Model Generation / Chassis Engine
Acura - - K20A/K20Z/K24
Honda - - K20A/K20Z/K24
SUPERTECH

SUPERTECH

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Supertech Honda K20/K24 Black Nitrided Intake Valve - Set of 8

Brand: SUPERTECH Product id: 72299 MPN: ST-HIVN-1020D-8
EAN: 5903713182832
Availability: Available to order
195.23€
193.28€ Excl. VAT: 159.74€
EU Shipping — No Import Taxes
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Tags: Engine\By Car Make\Honda\2.0 (K20)|Engine\By Car Make\Honda\2.4 (K24),

Brand Model Generation Engine
Acura - - K20A/K20Z/K24
Honda - - K20A/K20Z/K24

SUPERTECH

Product Title: SUPERTECH High-Performance Engine Oil – Ultimate Protection for Car Enthusiasts Introducing SUPERTECH High-Performance Engine Oil, the premium choice for car enthusiasts seeking unparalleled engine protection and performance. Designed to meet the demands of high-performance vehicles, SUPERTECH ensures your engine runs smoothly and efficiently, enhancing both longevity and power. Key Features and Benefits: - Advanced Synthetic Formula: Provides superior lubrication and reduces engine wear, ensuring optimal performance under extreme conditions. - High Viscosity Stability: Maintains consistent viscosity across a wide temperature range, delivering reliable protection in both hot and cold climates. - Enhanced Fuel Efficiency: Formulated to minimize friction, helping you achieve better fuel economy without sacrificing power. - Superior Cleaning Agents: Keeps your engine clean by preventing sludge and deposits, promoting a longer engine life. - Compatibility with All Engine Types: Suitable for both gasoline and diesel engines, making it the versatile choice for all car enthusiasts. With SUPERTECH High-Performance Engine Oil, you can trust that your vehicle is receiving the best care possible. Don’t compromise on quality—experience the difference that premium engine oil can make. Upgrade your engine's performance today and feel the power of SUPERTECH. Order now and give your car the protection it deserves!