Mishimoto Thermostatic Oil Cooler Kit
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Mishimoto Thermostatic Oil Cooler Kit - Subaru WRX STI (VA) MY15
Mishimoto has built its reputation on keeping engine fluids in check, and this kit brings that same focus on cooling efficiency to the Subaru WRX STI. Designed specifically for the MY15 model, it pairs a large capacity cooler with a thermostatic sandwich plate to manage oil temperature without overcooling on cold starts, backed by Mishimoto's lifetime warranty.
This listing covers the Subaru WRX STI (VA) MY15. The cooler is available in Silver or Black finishes, selectable via the variant options on this page (SKU MMOC-STI-15T / MMOC-STI-15TBK).
Important: this kit is designed for MY15 STI models fitted with the single scroll turbo and unequal length exhaust manifold. Vehicles with the twin scroll turbo and equal length manifold may not be compatible.
Key Features
- 19-row aluminium oil cooler mounted in the front bumper for optimal airflow
- Preassembled stainless steel lines with -10AN fittings
- Direct fit mounting brackets for a clean, hassle free install
- Thermostatic oil sandwich plate included
- Thermal reflective wrap fitted to lines for heat protection from nearby exhaust components
- Reduces oil temperatures by 16°C or more with minimal pressure loss
- Recommended fitting torque: 20-34 Nm, maximum 47 Nm
- Mishimoto Lifetime Warranty
Vehicle compatibility, OEM part numbers, and fitment notes are provided in the tabs above. Please confirm your STI's turbo type and exhaust manifold configuration before ordering.
Not sure if this kit suits your build? Contact our team at sales@chicaneaustralia.com.au for expert advice.
Vehicle Compatibility
| Make | Model | Chassis | Engine |
|---|---|---|---|
| Subaru | WRX STI | VA | EJ257 |
Technical Specifications
| Spec | Value |
|---|---|
| Cooler Core | 19-row |
| Line Material | Stainless steel, preassembled |
| Fitting Type | -10AN |
| Oil Temperature Reduction | 16+ °C (20+ °F) |
| Recommended Torque (straight fittings & banjo bolts) | 20–34 Nm (15–25 lb-ft) |
| Maximum Torque Rating | 47 Nm (35 lb-ft) |
| Heat Protection | Thermal reflective wrap included for oil lines |
| Turbo Compatibility | Single scroll turbo with unequal length exhaust manifold only; not compatible with twin scroll/equal length manifold models |
No instructions available for this product.
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