Mishimoto Power Steering Cooler

Mishimoto Power Steering Coolers: Engineering-Driven Fluid Temperature Control

Mishimoto has built its reputation as the world leader in performance cooling products since being founded in 2005, and that same engineering discipline carries directly into their power steering coolers. When a hydraulic power steering system runs hot — whether from aggressive driving, heavy towing, or sustained low-speed maneuvering — fluid viscosity breaks down, lubrication suffers, and pump wear accelerates. A dedicated power steering cooler is one of the simplest and most effective ways to keep fluid temperatures in check and extend the life of the entire steering system.

Two Distinct Power Steering Cooler Designs

Mishimoto offers two complementary approaches to power steering fluid cooling, each targeting a different installation style and performance need.

• 10-Row Stacked Plate Fluid Coolers (-6AN and -8AN): Mishimoto engineers designed these stacked plate heat exchangers to provide substantial heat transfer with minimal pressure loss. Each unit features brazed AN inlet and outlet fittings — available in both -6AN and -8AN configurations — for leak-free operation under pressure. Eight universal mounting holes give builders considerable flexibility when locating the cooler in tight engine bays or custom builds. The cores are available in silver, black, or gold powder-coated finishes, so the cooler can complement other underhood components. These coolers are also fully compatible with engine oil, transmission fluid, and gear oil, making them versatile ancillary fluid coolers beyond just power steering duty.
• Universal Tube-and-Fin Transmission & Power Steering Cooler Kit (MMTC-U): This efficient, lightweight tube-and-fin design promotes dramatic fluid temperature drops and is applicable for use with transmission fluid, power steering fluid, engine oil, and a variety of other automotive fluids. The kit includes all hardware needed for universal mounting — hose, ties, foam pads, O-ring clamps, and a drain cock connector — making it especially popular for builders who want to pair a Mishimoto all-aluminum radiator with an automatic transmission application. It also serves as a supplemental cooling solution for trucks used in high-stress towing applications.

What Sets Mishimoto Apart in This Category

Every Mishimoto power steering cooler is backed by the brand's signature Lifetime Warranty, which covers defects and even includes accident protection — a level of confidence that few aftermarket manufacturers extend to fluid cooling accessories. Mishimoto's products are rigorously tested at their dedicated engineering facility, and all designs are crafted to deliver an OEM-like fit with straightforward installation. The stacked plate coolers are designed to be paired with matching Mishimoto braided hoses and aluminum AN fittings for a fully integrated, purpose-built cooling circuit.

Whether you're upgrading a sport compact prone to rack-and-pinion heat soak, a modified truck that sees frequent towing, or a track-day build where steering feel and consistency matter every lap, Mishimoto's power steering coolers address the problem at its root: excess heat. Browse the full selection of power steering coolers or explore the complete Mishimoto catalog for complementary cooling system upgrades.