Description
The Mishimoto Oil Sandwich Plate with Rear-Mounted Thermostat (MMOP-SPTRM22) is a CNC-machined billet 6061 aluminum plate built to manage oil temperature on both daily-driven and built performance engines. Its rear-mounted internal thermostat and compact footprint let it slot into engine bays where exhaust routing or other components leave little room to work, while a pair of 1/8-in NPT ports stand ready for temperature or pressure sensors.
Proper oil temperature control is central to engine longevity and consistent performance, and this sandwich plate is engineered to deliver it without unnecessary bulk. The built-in thermostat restricts oil flow to the heat exchanger until the activation temperature is reached, which speeds warm-up while still preserving efficient cooling once the engine is up to temperature. A square O-ring design supports a reliable seal at the mounting surface, and the plate ships with a stainless steel M22 x 1.5 sandwich plate adapter that opens up fitment across a wide range of Ford and GM engines. Combined with the Mishimoto Lifetime Warranty, this is a component built for engine bays where every part of the car engine has to earn its space.
Vehicle Applications
The included M22 x 1.5 adapter allows this sandwich plate to mount on GM LSX vehicles as well as Ford V8 engines including the 4.6L, 5.4L, and Coyote 5.0L. Per Mishimoto’s tech specs, it also fits 2008+ Chrysler/Dodge V8 engines, 1992+ Ford/Lincoln/Mercury 4.6L, 5.0L, and 5.4L V8 engines, 1995+ Ford/Lincoln/Mercury 2.5L engines, 1995+ Ford/Lincoln/Mercury 3.0L (24V) engines, 1999+ Ford 6.8L V10 engines, 1984-1987 Honda Civic/CRX, and 1986-1987 Acura Integra.
Features
- Constructed from billet 6061 CNC-machined aluminum
- Two 1/8-in NPT ports for sensors, oil feeds, etc.
- Built-in thermostat rated at 185°F (85°C)
- Thermostat is interchangeable with alternate 160°F or 200°F units for additional fluid temperature regulation
- Square O-ring design for superior sealing
- M22 x 1.5 thread pitch fits numerous Ford and GM engines
- Compact, rear-mounted thermostat design fits tight engine bays
- Backed by the Mishimoto Lifetime Warranty
Specifications
- Brand: Mishimoto
- Part Number: MMOP-SPTRM22
- Material: 6061 Aluminum
- Color: Gold
- Gasket or Seal Included: Yes
- Overall Width: 1.18 in
- Overall Height: 3.19 in
- Overall Length: 2.8 in
- Thermostat Activation Temperature: 185°F (85°C)
- Thread Pitch: M22 x 1.5
- Port Configuration: Two 1/8-in NPT ports
- Includes: Oil Sandwich Plate, Rubber O-ring, Built-in Thermostat, Stainless Steel Sandwich Plate Adapter (M22 x 1.5), Black 1/8-in NPT Plugs, Mishimoto Lifetime Warranty
- Recommended Torque: 15-25 lb-ft for straight fittings and banjo bolts (do not exceed 35 ft-lb)
Frequently Asked Questions
What material is the Mishimoto Oil Sandwich Plate made from?
It’s CNC-machined from billet 6061 aluminum.
What temperature does the built-in thermostat activate at?
The built-in thermostat is rated at 185°F (85°C), and it can be swapped for optional 160°F or 200°F thermostats for additional fluid temperature regulation.
What vehicles does the MMOP-SPTRM22 sandwich plate fit?
With the included M22 x 1.5 adapter, it fits GM LSX vehicles and Ford V8 engines including the 4.6L, 5.4L, and Coyote 5.0L, plus 2008+ Chrysler/Dodge V8 engines, 1992+ Ford/Lincoln/Mercury 4.6L/5.0L/5.4L V8 engines, 1995+ Ford/Lincoln/Mercury 2.5L and 3.0L (24V) engines, 1999+ Ford 6.8L V10 engines, 1984-1987 Honda Civic/CRX, and 1986-1987 Acura Integra.
What’s included with this sandwich plate?
It includes the oil sandwich plate, a rubber O-ring, the built-in thermostat, a stainless steel M22 x 1.5 sandwich plate adapter, black 1/8-in NPT plugs, and the Mishimoto Lifetime Warranty.
What is the recommended torque for installation?
Mishimoto recommends torquing all straight fittings and banjo bolts to 15-25 lb-ft, and the maximum torque rating should not exceed 35 ft-lb.
What are the two NPT ports used for?
The two 1/8-in NPT ports are intended for use with temperature or pressure sensors, oil feeds, etc.
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.
