★★★★★ 5
Great fit
Perfect fit. FYI - I bought the exact same one on EBAY FOR $11.78
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 2, 2026
Mishimoto In-Line Oil Thermostat
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Mishimoto In-Line Oil ThermostatSKU: MMOP EXTFC UPC: 748354010640 Mishimoto In Line Oil Thermostat Universal Fit The Mishimoto In Line Oil Thermostat delivers precise temperature regulation for engine oil transmission fluid or driveline fluids in any automotive build. Designed for tight clearance areas where standard sandwich plates do not fit this unit installs inline with existing lines. It maintains 185 degrees Fahrenheit for optimal viscosity and performance across all projects.
Quick Dispatch:
Your Mishimoto In-Line Oil Thermostat orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
Order Tracking:
You'll receive a tracking link by email once your Mishimoto In-Line Oil Thermostat ships.
Need Help?
Questions about Mishimoto In-Line Oil Thermostat, sizing, or delivery? We're just an email away.
Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for Mishimoto In-Line Oil Thermostat in your area.
Get Shipping Estimates
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
You may also like
Mishimoto Toyota Oil FIller Cap - Red
53.95
Westin 14-21 Toyota 4Runner (Excl. Limited) Sportsman X Grille Guard - Textured Black
551.50
Mishimoto 02-05 Subaru WRX/STi Thermostatic Oil Cooler Kit
267.48
Mishimoto Subaru Hoonigan Oil Filler Cap - Red
65.95
Mishimoto Small Aluminum Oil Catch Can - Wrinkle Red
131.95
Wilwood FSLI4 Front Hat Kit 13.00in Drilled Red Nissan 240SX
818.33
Mishimoto Large Aluminum Oil Catch Can
127.95
4.5 ★★★★★
Based on 388 reviews
Sort
Product Reviews
★★★★★ 5
East
Easy to replace and great fit
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 4, 2026
★★★★★ 5
Perfect fit
Nice quality
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 10, 2025
★★★★★ 5
Good OEM replacement for Honda Pilot
Size: 7.5" x 8.7" x 1.4"
Simple cabin filter for my wife’s Honda Pilot. It fits well in the cabin air filter drawer. This is of similar quality to the original Honda one; just cheaper. I’ve bought this for my Subaru and have been happy with it as well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2026
★★★★★ 5
Works great!
Size: 7.5" x 8.7" x 1.4"
This is a great filter for allergies and a huge help during allergy season. It traps fine dust and pollen much better than the standard paper filters you get from the dealership, resulting in noticeably cleaner air inside the cabin. The construction feels very solid, and it fit perfectly right into the housing without any issues. If you are looking for true HEPA filtration in your vehicle, this is definitely worth the upgrade!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 13, 2026
