HKS RADIATOR CAP  N-type - Black Ops Auto Works
HKS RADIATOR CAP  N-type - Black Ops Auto Works
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HKS RADIATOR CAP N-type

HKS
HKS15009-AK005
4957266655610
Radiator Caps
1 Units In Stock - Ships Next Business Day
Cooling, Engine, HKS, Radiator Caps
$ 30.00
$ 30.00

SKU: 15009-AK005 | UPC: 4957266655610

HKS RADIATOR CAP N-type Universal Fit for JDM Performance Cars

The HKS Radiator Cap N-type delivers 1.15 kgf/cm² release pressure to raise coolant boiling point and maintain cooling efficiency during high-load driving. This cap fits standard JIS D5302 radiator necks on popular JDM vehicles like Subaru Impreza WRX STI Nissan 240SX Silvia and Toyota MR2 Supra. It prevents overheating in modified engines by sustaining higher system pressure for consistent performance.

Key Features

  • 1.15 kgf/cm² Release Pressure: Raises boiling point approximately 3°C over stock caps to reduce cavitation and improve heat dissipation under boost
  • JIS D5302 Compatible Neck: Direct replacement for narrow neck radiators on most Japanese vehicles ensuring secure seal and no leaks
  • Brass and Aluminum Construction: Corrosion-resistant materials endure high temperatures and harsh coolant environments for long service life
  • Precision Valve Design: Reliable pressure regulation prevents premature cap failure during track or street use
  • Lightweight at 80g: Minimal added weight maintains vehicle balance while enhancing cooling system reliability

Product Notes

  • Verify radiator neck conforms to JIS D5302 standard before purchase
  • Pair with high-performance coolant for maximum temperature control
  • Compact packaging measures 4 x 3 x 2 inches for easy storage and shipping

Installation Notes

  • Professional installation recommended.
  • Drain coolant partially before removal to avoid spills
  • Hand-tighten cap securely no special tools required torque to spec if using wrench

This Part Fits

Year Make Model Submodel
1993-2021 Subaru Impreza WRX STI
1989-1998 Nissan 240SX S13 S14
1995-2002 Nissan Silvia S15
1986-1992 Toyota MR2 Turbo
1993-1998 Toyota Supra Twin Turbo
1990-2005 Mitsubishi Eclipse GSX
2003-2009 Nissan 350Z All

Why Choose HKS?

  • Motorsport-proven design from decades of JDM racing development
  • High-quality materials built for extreme temperature and pressure demands
  • Engineered in Japan for exact fit and reliable operation in tuned setups

Frequently Asked Questions

  • Q: Will this cap fit my Subaru WRX radiator?
    A: Yes it fits 1993-2021 Impreza WRX STI models with standard JIS D5302 neck along with most factory or aftermarket radiators
  • Q: What materials are used in construction?
    A: Brass valve assembly and aluminum body provide strength and corrosion resistance against ethylene glycol coolants
  • Q: Is installation straightforward and what warranty applies?
    A: Direct replacement takes minutes with basic tools HKS offers 1-year manufacturer warranty against defects

Shipping & Handling

  • Method: UPS Ground
  • Availability: In stock - ships same or next business day
  • Packaging: Secure box 4 x 3 x 2 inches
  • Weight: 0.18 lbs (80g)

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