Mishimoto Engine Oil Cooler

Mishimoto Engine Oil Coolers: Built for Real-World Heat

Mishimoto has built a reputation as one of the most trusted names in performance cooling, and their lineup of engine oil coolers is a clear demonstration of why. Whether you're pushing a turbocharged street build, hammering a road course, or tackling demanding off-road terrain, keeping engine oil at the right temperature is critical to engine longevity and performance.

Mishimoto offers an extensive range of engine oil coolers — from compact universal stacked-plate cores to heavy-duty bar-and-plate coolers — giving every builder the right tool for their specific cooling demands. Maintaining appropriate oil temperature is key to extending the life of your engine. Engine oil is specifically designed to operate within a certain temperature and pressure range, ensuring proper lubrication and reduced wear — and when a vehicle is modified or used in high-stress conditions, it's easy to exceed those limits, resulting in higher potential for wear and damage.

Universal Oil Cooler Kits: Row Counts for Every Application

Mishimoto's Universal Oil Cooler Kit lineup spans multiple row configurations — 10, 16, 19, 25, and even 34-row options — so builders can match cooling capacity to their engine's actual output and heat load. The stacked-plate cooler cores withstand high fluid pressures, reduce oil temperatures, and exhibit minimal pressure loss , making them effective without robbing power through excessive flow restriction.

The optional Mishimoto Thermostatic Sandwich Plate provides additional temperature control and limits oil flow to the cooler until optimal temperatures are reached, making it ideal for those in cooler climates. This is a key differentiator for daily-driven vehicles where over-cooling can be just as problematic as overheating.

Each complete kit ships with everything needed for installation: a billet anodized aluminum sandwich plate (standard or thermostatic), preassembled stainless steel braided oil lines with -10AN fittings and dowty seals for durable, leak-free connections, and both 3/4-in -16 and M20-1.5 sandwich plate adapters that support fitment for most makes and models.

Two Core Technologies: Stacked-Plate vs. Bar-and-Plate

Not all Mishimoto oil coolers are built the same way, and choosing the right core design matters. The 25-row oil cooler kit utilizes a stacked-plate design — a highly efficient configuration known for superior heat transfer properties. Unlike tube-and-fin coolers, stacked-plate coolers force the oil through multiple plates, allowing for maximum heat dissipation with minimal pressure loss.

For higher-horsepower or motorsport applications, Mishimoto also offers their Heavy-Duty Bar-and-Plate Fluid Cooler. This heavy-duty cooler is designed to keep oil cool in even the most extreme situations. The 17-row core is 10" long, 7.5" tall, and 2.5" thick with a 1.4-quart capacity for effective cooling on any high-performance application. It features turbulated fins to evenly circulate oil within the cooler, while large -16AN ports ensure ample flow for even the most demanding engines. The durable cast-aluminum end tanks are precision TIG welded to the bar-and-plate core for an oil cooler that can endure the stresses of racing or everyday driving.

Fan-Assisted Kits and Vehicle-Specific Fitments

For applications where airflow over the cooler cannot be guaranteed — such as electric vehicles, off-road builds, or low-speed duty cycles — Mishimoto offers fan-equipped kits. The fully assembled 19-row universal oil cooler kit delivers efficient cooling for performance cars, trucks, and electric vehicles, featuring a stacked-plate style cooler paired with dual 5-inch fans and a natural aluminum fan shroud for consistent airflow and heat dissipation, constructed from durable, corrosion-resistant aluminum.

Beyond universal options, Mishimoto also produces vehicle-specific oil cooler kits engineered for popular platforms like the Subaru WRX STI, with application-specific components including thermal reflective wrap for oil lines, and the option to choose between a Stealth Black or Sleek Silver cooler paired with either the standard or thermostatic oil sandwich plate.

Lifetime Warranty Backed by Engineering

No matter which option you choose, all Mishimoto oil cooler kits come fully assembled and are backed by Mishimoto's lifetime warranty, ensuring reliability and long-term performance. Several coolers are also available in multiple finish options — including sleek silver, stealth black, bold gold, red, white, or blue — so the upgrade complements your engine bay aesthetically as well as functionally.