Description
The Mishimoto MMOC-WRX-06BK is a direct-fit, black-finished 19-row oil cooler kit purpose-built for the Hawkeye-generation Subaru WRX and STI. Engineered to mount behind the front bumper and grille for optimum airflow, this specific configuration is the non-thermostatic black cooler variant, delivering a documented 50°F (34°C) temperature drop with minimal pressure loss. Every kit ships complete with application-specific mounting hardware and stainless steel braided lines so it bolts in without improvising fittings.
High-horsepower Subaru applications generate heat that standard oiling systems weren’t designed to manage, and rising oil temperatures accelerate degradation while putting the engine at risk. This Mishimoto oil cooler kit addresses that directly: its bar-and-plate, 19-row cooler core is anodized black and adds .65 qt to total oil capacity while substantially reducing operating temperatures. Whether you’re chasing consistent track lap times or simply want a more resilient cooling system for spirited street driving, this Mishimoto cooler kit gives your oil circuit the extra thermal headroom it needs, and it’s backed by the Mishimoto Lifetime Warranty.
Vehicle Applications
This kit is a direct fit for the 2006–2007 Subaru Impreza WRX, WRX Limited, WRX STI, and WRX TR, as well as the 2007 Subaru Impreza WRX STI Limited. It covers vehicles built on the GD chassis equipped with the EJ255 or EJ257 engine and works with both automatic and manual transmission applications. Note that this cooler will not fit vehicles equipped with front-mount intercoolers, and installers should inspect the oil filter housing for compatibility; fitment has been confirmed against Subaru part 21311AA051.
Features
- Large 19-row bar-and-plate oil cooler core in a stealth black anodized finish
- Delivers a 50°F (34°C) temperature drop with minimal pressure loss
- Direct-fit design specific to the Subaru WRX platform
- CNC-machined spacer allows installation without removing the heat shield
- AN Flare inlet and outlet fittings with male fitting gender
- Adds .65 qt to total oil capacity for greater thermal buffer
- Available with a thermostatic sandwich plate option and in black or silver cooler finishes (this listing is the black, non-thermostatic version)
- Includes application-specific mounting brackets, a 2ft 2in and a 2ft 8in stainless steel braided hose with -10AN fittings, an oil sandwich plate, a stainless steel sandwich plate adapter (M20), a black M20 x -10AN banjo fitting with bolt, a 2-inch Thermashield silver braided line protector, a black rubber protector square, and mounting hardware
- Backed by the Mishimoto Lifetime Warranty
Specifications
- Brand: Mishimoto
- Part Number: MMOC-WRX-06BK
- Product Type: Cooling
- Core Type: Bar-and-Plate
- Core Row Quantity: 19
- Core Color/Finish: Black, Anodized
- Core Height: 5.43 in
- Core Thickness: 1.97 in
- Core Width: 11 in
- Inlet Fitting Type: AN Flare, Male
- Outlet Fitting Type: AN Flare, Male
- Grade Type: Performance
- Added Oil Capacity: .65 qt
- Engine Codes: EJ255, EJ257
- Chassis Code: GD
- Recommended Torque: 15-25 lb-ft for straight fittings and banjo bolts; do not exceed 35 ft-lb maximum
Frequently Asked Questions
What vehicles does the Mishimoto MMOC-WRX-06BK oil cooler kit fit?
This kit is a direct fit for the 2006–2007 Subaru Impreza WRX, WRX Limited, WRX STI, and WRX TR, as well as the 2007 Subaru Impreza WRX STI Limited, covering the GD chassis with EJ255 or EJ257 engines.
How much of a temperature reduction does this oil cooler provide?
The Mishimoto oil cooler kit delivers a 50°F (34°C) temperature drop with minimal pressure loss.
Does this oil cooler kit work with vehicles that have a front-mount intercooler?
No. According to Mishimoto’s technical notes, this cooler will not fit on vehicles equipped with front-mount intercoolers.
Is this kit compatible with both manual and automatic transmission WRX/STI models?
Yes, the kit fits automatic and manual applications, though it’s recommended to inspect the oil filter housing for installation compatibility.
What does the Mishimoto oil cooler kit include?
The kit includes application-specific mounting brackets, a 19-row oil cooler, a 2ft 2in and a 2ft 8in stainless steel braided hose with -10AN fittings, an oil sandwich plate, a stainless steel sandwich plate adapter (M20), a black M20 x -10AN banjo fitting with bolt, a 2-inch Thermashield silver braided line protector, a black rubber protector square, mounting hardware, and the Mishimoto Lifetime Warranty.
Is a thermostatic version of this oil cooler available?
Yes, the Mishimoto direct-fit oil cooler kit is available with a thermostatic sandwich plate for additional oil temperature control, in addition to this black, non-thermostatic option.
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.
