SKU: MMOP-SPTR | UPC: 748354010831
Mishimoto Oil Sandwich Plate w/ Rear-Mounted Thermostat – Universal M20x1.5
This thermostatic sandwich plate installs between your oil filter housing and spin-on filter to manage oil flow to heat exchangers on performance vehicles like daily-driven Subarus or built Audi 20V engines. It ensures proper oil temperatures for engine longevity and power output with faster warm-up times and controlled cooling. The compact design works in restricted engine bays near exhaust components.
Key Features
- CNC-Machined Billet 6061 Aluminum: Provides precision machining lightweight strength and corrosion resistance for reliable daily or track use
- Rear-Mounted Thermostat: Activates at 160°F (71°C) to block cooler flow during warmup then opens for efficient cooling in tight spaces
- Compact Footprint: Measures 2.9 x 2.6 x 1.3 inches to fit confined engine bays with exhaust or accessory interference
- Dual 1/8 NPT Ports: Allows connection of oil temperature or pressure sensors for real-time monitoring
- Lifetime Warranty: Covers defects in materials and craftsmanship for long-term confidence
Product Notes
- Compatible with M20x1.5 spin-on oil filters common on Subaru EJ/FA Audi VW Porsche engines
- Kit includes sandwich plate thermostat O-ring port plugs and mounting hardware
- Ships ready for installation with no modifications required
Installation Notes
- Professional installation recommended.
- Torque oil filter housing bolts to manufacturer specifications during install
- Uses factory oil filter housing threads and hardware for direct bolt-on fit
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2002-2007 | Subaru | Impreza | WRX |
| 2004-2021 | Subaru | Impreza | WRX STI |
| 2004-2013 | Subaru | Forester | XT |
| 2005-2009 | Subaru | Legacy | 2.5 GT |
| 1996-2001 | Audi | A4 | 1.8T |
| 1997-2003 | Audi | A4 | 2.8 Quattro 30V |
| 1986-1994 | Audi | 80 | 20V Quattro |
| 1990-1994 | Audi | Coupe Quattro | 20V |
| 1999-2005 | Volkswagen | Golf | 1.8T MK4 |
| 1987-1991 | Porsche | 944 | Turbo S2 |
Why Choose Mishimoto?
- Engineered and tested for motorsport and street applications worldwide
- High-flow design maintains oil pressure while regulating temperatures
- Direct replacement backed by rigorous quality control
Frequently Asked Questions
- Q: What oil filter thread does this fit?
A: Designed for standard M20x1.5 spin-on filters on Subaru WRX STI Forester XT Audi A4 1.8T VW Golf 1.8T and similar engines - Q: What is the thermostat activation temperature?
A: Opens at 160°F (71°C) to retain heat during warmup then allows full flow to cooler - Q: What does the lifetime warranty cover?
A: Defects in materials or workmanship under normal use with registration recommended
Shipping & Handling
- Method: Ground
- Availability: In stock – ships same or next business day
- Packaging: Protective box 7.9 x 6.1 x 2.6 inches
- Weight: 1.1 lbs product 1.4 lbs shipping
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