Description
The Mishimoto Thermostatic Oil Cooler Kit (MMOC-WRX-15T) is a direct-fit cooling upgrade purpose-built for the 2015+ Subaru WRX and its turbocharged FA20DIT engine. Rather than a generic bolt-on cooler, this kit replaces the factory liquid-to-liquid unit with a Mishimoto sandwich plate featuring a rear-mounted, 185°F/85°C thermostat, paired with a large 19-row bar-and-plate core mounted low in the front bumper for maximum airflow. In testing, this setup delivered a proven 20°F (11.1°C) drop in oil temperature with minimal pressure loss.
Sustained high oil temperatures accelerate wear and rob performance, especially once a WRX is modified or spends time on track. This Mishimoto oil cooler kit is engineered to keep oil in its ideal operating range, protecting the engine during aggressive street driving or track sessions. The billet aluminum thermostatic sandwich plate, complete with a CNC-machined aluminum spacer, lets oil warm up quickly to operating temperature before the cooler circuit engages, while the application-specific silicone bypass hose cleanly reroutes flow around the stock liquid-to-liquid heat exchanger for a tidy engine bay. Preassembled stainless steel braided lines with -10AN fittings handle the plumbing, and the kit even increases total oil capacity by 0.75 qt while retaining the factory liquid-to-liquid oil cooler unit. Offered as a complete Mishimoto cooler kit, it is a full bolt-on oil cooling solution designed for no-modification installation on street and track cars alike.
Vehicle Applications
This Mishimoto oil cooler kit is a direct fit for the 2015-2021 Subaru WRX (chassis code VA) equipped with the FA20DIT engine, covering WRX Base, Limited, and Premium trims across 2015-2021, WRX Sport and Sport-tech trims from 2017-2021, the WRX Sport-tech RS from 2019-2020, the WRX Raui Edition (2019), and 2018-2021 WRX models equipped with either a 6-speed manual or CVT transmission, as well as the 2021 WRX EyeSight. This oil cooler kit will not fit alongside the Mishimoto 2015+ WRX front-mount intercooler kit.
Features
- Direct fit for the 2015-2021 Subaru WRX
- Proven 20°F (11.1°C) drop in oil temperature
- Full bolt-on oil cooling solution for street and track vehicles
- No modification necessary for installation
- Billet aluminum thermostatic oil sandwich plate allows oil to reach optimum temperature
- 19-row oil cooler strategically mounted in the lower grille for maximum airflow
- CNC-machined aluminum spacer for the oil sandwich plate
- Silicone hose bypasses stock liquid-to-liquid heat exchanger
- Includes preassembled stainless steel braided oil lines with -10AN fittings
- Cooler available in Sleek Silver or Stealth Black
- Increases oil capacity by 0.75 qt
- Retains use of your stock liquid-to-liquid oil cooler unit
- Backed by the Mishimoto Lifetime Warranty
Specifications
- Core Type: Bar-and-Plate
- Grade Type: Performance
- Core Row Quantity: 19
- Core Height: 5.43 in
- Core Thickness: 1.97 in
- Core Width: 11 in
- Finish: Anodized
- Color: Silver
- Core Color: Silver
- Inlet/Outlet Fitting Type: AN Flare
- Inlet/Outlet Fitting Gender: Male
- Engine Code: FA20DIT
- Chassis Code: VA
Frequently Asked Questions
What vehicles does the Mishimoto MMOC-WRX-15T oil cooler kit fit?
It is a direct fit for the 2015-2021 Subaru WRX (chassis code VA) with the FA20DIT engine, including WRX Base, Limited, and Premium (2015-2021), Sport and Sport-tech (2017-2021), Sport-tech RS (2019-2020), Raui Edition (2019), and 2018-2021 6-speed manual and CVT models, as well as the 2021 WRX EyeSight.
How much does this kit reduce oil temperature?
Mishimoto reports a proven 20°F (11.1°C) drop in oil temperature with minimal pressure loss.
What is the thermostat activation temperature?
The built-in thermostat in the rear-mounted sandwich plate activates at 185°F / 85°C.
Does this kit require any modification to install?
No, Mishimoto designed this kit so no modification is necessary for installation.
Can this be installed alongside the Mishimoto front-mount intercooler kit?
No, this oil cooler kit will not fit with the Mishimoto 2015+ WRX front-mount intercooler kit.
What color options are available?
The oil cooler is available in Sleek Silver or Stealth Black.
âš WARNING (California Proposition 65): This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
