Mishimoto Thermostatic Oil Cooler Kit - Black — Fits 2015-2018 Subaru WRX STI

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SKU: MISMMOC-STI-15TBK
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Sale price$624.95 Regular price$687.00
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Mishimoto

Mishimoto is the modern leader in performance cooling — aluminum radiators, oil coolers, intercoolers, and silicone hoses for street, track, and tuner builds. Lifetime warranty on every Mishimoto product, with engineering tested at Bondurant and on track teams.

Watch in action

Mishimoto Thermostatic Oil Cooler Kit - Black for 2015-2018 Subaru WRX STI

Ensure optimal engine operation and longevity for your 2015-2018 Subaru WRX STI with the Mishimoto Thermostatic Oil Cooler Kit in a stealthy black finish. This kit is designed to precisely regulate oil temperatures, providing crucial protection against overheating during high-performance driving and ensuring efficient operation in various conditions. The integrated thermostat allows for quicker engine warm-ups and maintains ideal oil temperatures for peak lubrication and reduced wear.

Key Features & Benefits:

  • Vehicle-Specific Design: Engineered for a direct fit on 2015, 2016, 2017, and 2018 Subaru WRX STI models, ensuring straightforward installation.
  • Thermostatic Control: Features an internal thermostat that optimizes oil flow, allowing the engine to reach its ideal operating temperature quickly and preventing over-cooling.
  • High-Capacity Cooler: Includes a large 19-row oil cooler positioned in the front bumper for maximum exposure to airflow and superior heat dissipation.
  • Proven Temperature Reduction: Demonstrates a reduction in oil temperatures by over 20 degrees Fahrenheit (16+ degrees Celsius) with minimal impact on oil pressure.
  • Durable Construction: Comes with direct-fit mounting brackets and pre-assembled stainless steel lines featuring reliable -10AN fittings.
  • Exhaust Heat Protection: Includes thermal reflective wrap for the oil lines, offering essential protection against radiant heat from the exhaust system.

Upgrade your 2015-2018 Subaru WRX STI's cooling system with the performance and reliability of the Mishimoto Thermostatic Oil Cooler Kit. Maintain your engine's health and performance. Purchase this essential kit from GGCRACING today!

Vehicle Fitment

Years Make Model Trim
2018-2021 Ford Mustang GT
2018-2021 Ford Mustang GT Premium
2019-2020 Ford Mustang Bullitt
2021 Ford Mustang Mach 1
2015 Subaru WRX STI Launch Edition
2015-2018 Subaru WRX STI Base
2015-2018 Subaru WRX STI Limited

Product Details

Product Description
Part Numbers
Sizing & Fit

About Mishimoto

Mishimoto is the modern leader in performance cooling — aluminum radiators, oil coolers, intercoolers, and silicone hoses for street, track, and tuner builds. Lifetime warranty on every Mishimoto product, with engineering tested at Bondurant and on track teams.

Watch in action

Mishimoto Thermostatic Oil Cooler Kit - Black for 2015-2018 Subaru WRX STI

Ensure optimal engine operation and longevity for your 2015-2018 Subaru WRX STI with the Mishimoto Thermostatic Oil Cooler Kit in a stealthy black finish. This kit is designed to precisely regulate oil temperatures, providing crucial protection against overheating during high-performance driving and ensuring efficient operation in various conditions. The integrated thermostat allows for quicker engine warm-ups and maintains ideal oil temperatures for peak lubrication and reduced wear.

Key Features & Benefits:

  • Vehicle-Specific Design: Engineered for a direct fit on 2015, 2016, 2017, and 2018 Subaru WRX STI models, ensuring straightforward installation.
  • Thermostatic Control: Features an internal thermostat that optimizes oil flow, allowing the engine to reach its ideal operating temperature quickly and preventing over-cooling.
  • High-Capacity Cooler: Includes a large 19-row oil cooler positioned in the front bumper for maximum exposure to airflow and superior heat dissipation.
  • Proven Temperature Reduction: Demonstrates a reduction in oil temperatures by over 20 degrees Fahrenheit (16+ degrees Celsius) with minimal impact on oil pressure.
  • Durable Construction: Comes with direct-fit mounting brackets and pre-assembled stainless steel lines featuring reliable -10AN fittings.
  • Exhaust Heat Protection: Includes thermal reflective wrap for the oil lines, offering essential protection against radiant heat from the exhaust system.

Upgrade your 2015-2018 Subaru WRX STI's cooling system with the performance and reliability of the Mishimoto Thermostatic Oil Cooler Kit. Maintain your engine's health and performance. Purchase this essential kit from GGCRACING today!

Vehicle Fitment

Years Make Model Trim
2018-2021 Ford Mustang GT
2018-2021 Ford Mustang GT Premium
2019-2020 Ford Mustang Bullitt
2021 Ford Mustang Mach 1
2015 Subaru WRX STI Launch Edition
2015-2018 Subaru WRX STI Base
2015-2018 Subaru WRX STI Limited

Product Details

Product Description

About Mishimoto

Mishimoto is the modern leader in performance cooling — aluminum radiators, oil coolers, intercoolers, and silicone hoses for street, track, and tuner builds. Lifetime warranty on every Mishimoto product, with engineering tested at Bondurant and on track teams.

Watch in action

Mishimoto Thermostatic Oil Cooler Kit - Black for 2015-2018 Subaru WRX STI

Ensure optimal engine operation and longevity for your 2015-2018 Subaru WRX STI with the Mishimoto Thermostatic Oil Cooler Kit in a stealthy black finish. This kit is designed to precisely regulate oil temperatures, providing crucial protection against overheating during high-performance driving and ensuring efficient operation in various conditions. The integrated thermostat allows for quicker engine warm-ups and maintains ideal oil temperatures for peak lubrication and reduced wear.

Key Features & Benefits:

  • Vehicle-Specific Design: Engineered for a direct fit on 2015, 2016, 2017, and 2018 Subaru WRX STI models, ensuring straightforward installation.
  • Thermostatic Control: Features an internal thermostat that optimizes oil flow, allowing the engine to reach its ideal operating temperature quickly and preventing over-cooling.
  • High-Capacity Cooler: Includes a large 19-row oil cooler positioned in the front bumper for maximum exposure to airflow and superior heat dissipation.
  • Proven Temperature Reduction: Demonstrates a reduction in oil temperatures by over 20 degrees Fahrenheit (16+ degrees Celsius) with minimal impact on oil pressure.
  • Durable Construction: Comes with direct-fit mounting brackets and pre-assembled stainless steel lines featuring reliable -10AN fittings.
  • Exhaust Heat Protection: Includes thermal reflective wrap for the oil lines, offering essential protection against radiant heat from the exhaust system.

Upgrade your 2015-2018 Subaru WRX STI's cooling system with the performance and reliability of the Mishimoto Thermostatic Oil Cooler Kit. Maintain your engine's health and performance. Purchase this essential kit from GGCRACING today!

Vehicle Fitment

Years Make Model Trim
2018-2021 Ford Mustang GT
2018-2021 Ford Mustang GT Premium
2019-2020 Ford Mustang Bullitt
2021 Ford Mustang Mach 1
2015 Subaru WRX STI Launch Edition
2015-2018 Subaru WRX STI Base
2015-2018 Subaru WRX STI Limited

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