Mishimoto Performance Oil Cooler Kit for 2023+ Toyota GR Corolla

Description

The Mishimoto MMOC-GRC-23TBK is a direct-fit performance oil cooler kit engineered specifically for the 2023+ Toyota GR Corolla’s 1.6L turbocharged three-cylinder (engine code G16E-GTS, chassis GZEA14). Built around a 14-row dual-pass bar-and-plate core, this kit was developed after Mishimoto identified that the GR Corolla’s fast-spinning turbo and 10.5:1 compression ratio can push oil temperatures over 260 degrees. This isn’t a generic universal cooler forced into a bracket kit — it’s a purpose-built solution designed around the GRC’s specific cooling demands.

Anyone running a modern high-output small-displacement engine knows that managing oil temperature is critical to protecting bearings, seals, and turbo components under sustained load. This Mishimoto oil cooler kit mounts the 14-row bar-and-plate cooler in the upper grille using direct-fit brackets that maximize airflow without requiring you to drill into the body. In dyno testing, the kit produced an average 13-degree reduction in oil temperatures, and because the added cooler and lines increase system volume by 0.76 quarts, oil has more thermal mass to work with, letting you stay on the throttle longer without watching temps climb. Pre-assembled black nylon-sheathed -10AN braided stainless-steel lines handle the plumbing, delivering the flow needed at high RPM while resisting abrasion and pressure over the life of the part.

Vehicle Applications

This Mishimoto oil cooler kit is designed as a direct fit for the 2023–2025 Toyota GR Corolla equipped with the 1.6L turbocharged I3 engine (G16E-GTS) on the GZEA14 chassis. No other vehicles are covered by this kit.

Features

• Direct fit for 2023+ Toyota GR Corolla
• 14-row dual-pass bar-and-plate oil cooler for significant added cooling capacity
• Dyno-proven average 13-degree reduction in oil temperatures
• Adds 0.76 quarts of oil to the system for increased cooling efficiency
• Pre-assembled -10AN lines and fittings ensure ample flow at high RPM
• Nylon-sheathed stainless-steel braided lines for high pressure tolerance and durability
• Bar-and-plate core construction is strong and durable enough for street or track use
• Direct-fit mounting brackets allow installation without drilling into the body
• Anti-vibration mounting grommets protect the cooler over harsh road conditions
• Available with a thermostatic sandwich plate for daily drivers or cold climates, or a non-thermostatic sandwich plate for dedicated track cars or hot environments
• Includes everything needed for installation
• Backed by the Mishimoto Lifetime Warranty

Specifications

• Brand: Mishimoto
• Part Number: MMOC-GRC-23TBK
• Core Type: Bar-and-Plate
• Core Row Quantity: 14
• Core Color: Black
• Finish: Anodized
• Core Height: 6.3 in
• Core Thickness: 1.57 in
• Core Width: 12.48 in
• Grade Type: Performance
• Inlet/Outlet Fitting Type: AN Flare (10AN)
• Inlet/Outlet Fitting Gender: Male
• Inlet/Outlet Outside Diameter: 0.625 in
• Fluid Capacity Added: 0.76 qt
• Cooler Fluid Capacity: 0.8 qt
• Engine Application: Toyota GRC Corolla I3 1.6L 2023+
• Engine Code: G16E-GTS
• Chassis Code: GZEA14
• Installation Note: Minor modification of the radiator shroud is required
• Includes: (1) Mishimoto Dual-Pass Oil Cooler, (2) -10AN Nylon-Sheathed Braided Stainless-Steel Lines, (2) Mounting Brackets, (1) Mishimoto Oil Filter Sandwich Plate, (2) Sandwich Plate Fittings, (1) Sandwich Plate Center Bolt, Mounting Hardware, 2″x12″ Heat Protection Wrap, Mishimoto Lifetime Warranty

Frequently Asked Questions