Description
The Mishimoto Oil Cooler Kit (MMOC-MUS8-18TRHD) is a purpose-built bar-and-plate oil cooler system engineered for the S-550 chassis 2018-2023 Ford Mustang GT running the 5.0 Coyote III engine in right-hand-drive configuration. Mishimoto’s engineers built this heat exchanger from scratch to be the largest oil cooler the brand offers, mounting it directly in the upper grille opening where it receives maximum airflow while leaving room for supercharger heat exchangers on modified builds.
As part of Mishimoto’s Cooling lineup, this oil cooler kit pairs the bar-and-plate cooler with an application-specific mounting bracket that also functions as an air diversion panel, directing ambient air through the core instead of around it. Pre-made stainless steel braided lines finished with -10AN fittings connect the cooler to the engine, while the included billet aluminum thermostatic oil sandwich plate helps guard against overcooling of engine oil. Installing this Mishimoto oil cooler kit removes the factory fluid-based oil cooler for less stress on the stock cooling system, increases oil capacity by roughly 1 quart, and is designed to work alongside most aftermarket supercharger kits, making it a practical Mishimoto cooler upgrade for stock or modified Mustang GT builds.
Vehicle Applications
This right-hand-drive-specific Mishimoto oil cooler kit is built for the S-550 chassis 2018-2023 Ford Mustang GT and Mustang GT Premium, and coverage extends to the 2019-2023 Mustang GT V8, the 2019-2020 Mustang Bullitt, the 2021-2023 Mustang Mach 1, and the 2018 Mustang V8. Each of these applications shares the S-550 platform and 5.0 Coyote III engine code this cooler kit was engineered around, and Mishimoto specifies this kit for right-hand-drive vehicles only.
Features
- Direct fit for 2018-2023 Ford Mustang GT (RHD)
- Bar-and-plate oil cooler mounts in the upper grille, leaving room for supercharger heat exchangers
- Application-specific mounting bracket doubles as an air diversion panel for maximum airflow through the cooler
- Pre-made stainless steel braided oil lines with -10AN fittings for simplified installation
- Includes a replacement lower radiator hose with worm gear clamps to bypass the stock fluid-based oil cooler
- Removes the stock fluid-based oil cooler for less stress on the engine’s cooling system
- Billet aluminum thermostatic oil sandwich plate helps protect against overcooling
- Increases oil capacity by 1 qt
- Compatible with most aftermarket supercharger kits
- Kit includes mounting hardware, M22 thermostatic sandwich plate with extended-length center bolt, M20 x -10AN straight fittings, 1/8-in NPT plugs, and a large O-ring
- Installation requires removal of the stock coolant-based oil cooler and the active grille shutters (removal without tuning can cause a check engine light)
- Backed by the Mishimoto Lifetime Warranty
Specifications
- Color: Silver
- Finish: Anodized
- Core Type: Bar-and-Plate
- Grade Type: Performance
- Core Color: Silver
- Inlet Fitting Type: AN Flare, Male
- Outlet Fitting Type: AN Flare, Male
- Overall Width: 12.3 in
- Overall Height: 2.5 in
- Overall Length: 28.6 in
- Core Width: 18.5 in
- Chassis Code: S-550
- Engine Code: 5.0 Coyote III
- Application: 2018-2023 Ford Mustang GT (Right Hand Drive vehicles only)
- Recommended torque for straight fittings and banjo bolts: 15-25 lb-ft; do not exceed 35 ft-lb maximum
Frequently Asked Questions
What vehicles does the Mishimoto Oil Cooler Kit MMOC-MUS8-18TRHD fit?
This kit fits the 2018-2023 Ford Mustang GT and Mustang GT Premium, the 2019-2023 Mustang GT V8, the 2019-2020 Mustang Bullitt, the 2021-2023 Mustang Mach 1, and the 2018 Mustang V8.
Is this Mishimoto oil cooler kit for left-hand-drive or right-hand-drive Mustangs?
This kit is engineered for right-hand-drive (RHD) 2018-2023 Ford Mustang GT vehicles only.
What does the Mishimoto Oil Cooler Kit include?
The kit includes an application-specific mounting bracket/air diversion shield, a bar-and-plate oil cooler, stainless steel braided hoses (2ft 3in and 4ft 8in) with -10AN fittings, an M22 thermostatic sandwich plate with an application-specific extended-length center bolt, M20 x -10AN straight fittings, 1/8-in NPT plugs, a large O-ring, a lower radiator hose with worm gear clamps, and a mounting hardware set.
Does installing this oil cooler kit require removing any factory parts?
Yes, installation requires removal of the stock coolant-based oil cooler and the active grille shutters. Removing the shutters without tuning can cause a check engine light.
Does the Mishimoto Oil Cooler Kit increase oil capacity?
Yes, the kit increases oil capacity by 1 qt.
What warranty covers this Mishimoto Mustang GT oil cooler kit?
This kit is backed by the Mishimoto Lifetime Warranty.
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.












