HKS Oil Cooler Kit Subaru WRX STi (2002-2021) Sandwich Type

Ensure your Subaru WRX STI performs at its best, whether you're hitting the track or cruising down the road, with the HKS Oil Cooler Kit. Designed for optimal cooling efficiency, this kit is engineered to keep your engine oil at the perfect temperature, preventing overheating and promoting engine longevity. Available for a variety of WRX STI model years, the HKS Oil Cooler Kit is a must-have upgrade for those who demand top-tier performance and reliability.

Fitment Information

• Subaru WRX STi (2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021) 
  • Select year in drop down before ordering

Note

• 2002-2005 (15004-AF107)
  
  • Modification of Air Guide is required when used with HKS Front Mount Intercooler (13001-AF005).
    
  • Not Compatible with STI SPEC C model.
    
  • Fog Lamps cannot be installed with Oil Cooler.
    
  • Washer Tank for Rear Window and Intercooler Spray must be removed (oil cooler core mounts in same location. If the Washer Tank and Intercooler Spray are required, use Kangaroo type.)
    
  • Oil Temperature Meter and Oil Pressure will not mount to the Sandwich Plate.
    
  • Caution: Oil filter will be lowered to same height as oil sump.
• 2008-2014 (15004-AF110)
  • Racing Suction (available separately) is required. Due to lack of clearance, oil pressure/temperature sensors cannot be installed together.

Specs & Features

• Perfect Fitment for All WRX STI Models (2002-2021): HKS has tailored oil cooler kits for multiple generations of the Subaru WRX STI, ensuring a precise and seamless installation.

• Efficient Cooling System: Mounts the oil cooler in the fender, away from the radiator, ensuring optimal airflow and stable cooling conditions without causing temperature rise in the radiator.

• Thick 12-Row Oil Cooler Core: Maximizes cooling efficiency while avoiding pressure loss, providing superior heat dissipation to keep your engine running cool even in the most demanding situations.

• Aluminum Air Duct Included: The integrated air duct guides cool air directly into the oil cooler core for even more efficient cooling, enhancing airflow dynamics and cooling power.

• Stable Oil Temperature Control: The kit stabilizes oil temperatures and lowers peak temperatures when used in combination with the stock water-cooled oil cooler, protecting your engine from the risk of overheating.

• Durable Construction: Built with high-quality materials, the kit includes stainless steel hoses, a thermostat that opens at 70°C and fully opens at 80°C, and a relief feature to prevent pressure spikes.

• No Loss of Fog Lamps: For the 2015-2021 models, this oil cooler kit installs in the fender area without interfering with your vehicle's fog lamps, maintaining functionality and style.
  

Product Description

The HKS Oil Cooler Kit for Subaru WRX STI is designed to maintain optimal oil temperatures, ensuring better performance and long-term engine protection. Overheating oil can degrade its ability to lubricate, cool, and clean, but this cooler kit keeps temperatures in check, even under high-performance conditions like track days or aggressive driving.

With a 12-row thick core for maximum cooling, the kit features a high-performance thermostat that activates at 70°C, ensuring the oil stays at the ideal temperature. The aluminum air guide directs airflow into the cooler, improving efficiency and enhancing overall cooling.

For models 2002-2021, HKS optimizes the installation by placing the cooler in the fender to avoid interference with the radiator or fog lamps (for 2015-2021 models). This easy-to-install, high-efficiency kit ensures your WRX STI stays cool, protected, and performing at its peak.