Mishimoto · New
Mishimoto 15 Subaru STI Thermostatic Oil Cooler Kit - Silver
MPN MMOC-STI-15T · Store SKU misMMOC-STI-15T
Supplier stock checked 11/7/2026, 3:24:15 PM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
The Subaru WRX STI provides a great balance of power, handling, and reliability. As with any vehicle, controlling fluid temperatures will ensure consistent power and engine longevity. The Mishimoto Subaru WRX STI Oil Cooler Kit was developed specifically for the 2015 STI and is a great addition to any street or track-driven vehicle. A large 19-row cooler mounts in the front bumper to provide optimal airflow and cooling efficiency. The included direct-fit mounting brackets and preassembled stainless steel lines with -10AN fittings will ensure an easy and hassle-free installation. This cooler is proven to reduce oil temperatures by 20+ degrees Fahrenheit (16+degrees Celsius) degrees while maintaining minimal pressure loss. For further heat protection, this kit includes thermal reflective wrap for the oil lines, providing substantial heat deflection from the nearby exhaust. The Mishimoto Subaru WRX STI Oil Cooler Kit can be customized to meet your needs with either a Stealth Black or Sleek Silver cooler and your choice of the Mishimoto Oil Sandwich Plate or the Mishimoto Thermostatic Oil Sandwich Plate. As with all our products, this kit includes the Mishimoto Lifetime Warranty. High-performance engine oil cooler designed to regulate oil temperature and protect critical engine components. Efficient heat dissipation improves durability, maintains lubrication, and ensures reliable performance. Oil Cooler Kit, Silver, Thermostatic, fits Subaru WRX STI 2015-2021 Subaru WRX STI Oil Cooler Kit
Manufacturer fitment & guides
- 2015 Subaru WRX STI Base 2.5 Liter TY856, 2015 Subaru WRX STI Launch Edition 2.5 Liter TY856, 2015 Subaru WRX STI Limited 2.5 Liter TY856
- Manufacturer-supplied application summary from Turn14; this may not be an exhaustive fitment list.
Part-specific notes
- California Proposition 65: Y