Description
The Mishimoto MMOP-SPTR is a thermostatic oil sandwich plate machined from billet 6061 aluminum and built to regulate oil temperature before it reaches your heat exchanger. Unlike a plain spacer plate, this unit houses an internal thermostat that holds oil flow back until the oil reaches 185°F (85°C), letting the engine warm up faster while still keeping temperatures in check once things heat up. Its rear-mounted thermostat and compact footprint let it tuck into tight engine bays where exhaust routing or other engine components leave little room to spare.
Oil temperature management is one of the most overlooked components of automobile engine care, yet it plays a direct role in engine longevity and performance in both daily-driven and built applications. This high-flow sandwich plate for car engines is CNC-machined for precise tolerances and finished in gold, giving it durability beyond stamped or cast alternatives. Two 1/8 NPT ports, supplied with plugs, let you add temperature or pressure sensors directly at this key point among the parts of a car engine, giving tuners real-time data on oil conditions without piecing together adapters. Whether you’re maintaining a stock combustion setup or dialing in a modified build, this engine part helps keep oil circulation efficient across the surrounding car engine parts it protects.
Vehicle Applications
Mishimoto designed the MMOP-SPTR thermostatic sandwich plate to serve applications ranging from a daily-driven Subaru to a built Audi 20V engine, giving owners of both mild and heavily modified platforms a way to add thermostatic oil control and sensor ports without a bulky housing.
Features
- CNC-machined from billet 6061 aluminum for precision and durability
- Built-in thermostat activates at 185°F (85°C) to restrict oil flow to the heat exchanger until warm-up is reached
- Two 1/8 NPT ports, supplied with plugs, for adding temperature or pressure sensors
- Square O-ring design for a secure seal
- Compact, rear-mounted thermostat design for clearance in tight engine bays
- Includes a rubber O-ring and black 1/8-in NPT plugs
- Backed by the Mishimoto Lifetime Warranty
Specifications
- Brand: Mishimoto
- Part Number: MMOP-SPTR
- Material: 6061 Aluminum
- Color: Gold
- Overall Width: 1.18 in
- Overall Height: 3.19 in
- Overall Length: 2.8 in
- Thermostat Activation Temperature: 185°F / 85°C
- Port Size: 1/8 NPT (x2)
- Gasket or Seal Included: Yes
- Includes: Oil Sandwich Plate, Rubber O-ring, Built-in Thermostat, Black 1/8-in NPT Plugs, Mishimoto Lifetime Warranty
Frequently Asked Questions
What material is the Mishimoto MMOP-SPTR sandwich plate made from?
It is CNC-machined from billet 6061 aluminum and finished in gold.
At what temperature does the built-in thermostat activate?
The internal thermostat restricts oil flow to the heat exchanger until the oil reaches 185°F (85°C).
Does the sandwich plate include ports for sensors?
Yes, it has two 1/8 NPT ports, supplied with plugs, for temperature or pressure sensors.
What is included with this sandwich plate?
It includes the oil sandwich plate, a rubber O-ring, the built-in thermostat, black 1/8-in NPT plugs, and the Mishimoto Lifetime Warranty.
What vehicles is this sandwich plate designed for?
Mishimoto describes it as suited for applications such as a daily-driven Subaru or a built Audi 20V engine.
What are the overall dimensions?
The plate measures 1.18 in wide, 3.19 in tall, and 2.8 in long.
âš WARNING (California Proposition 65): This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.











