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🚗 mishimoto mmts-jgc-99l jeep grand cherokee 3.7l/4.7l racing thermostat 1999-2010: performance upgrade for optimal engine cooling logo

🚗 Mishimoto MMTS-JGC-99L Jeep Grand Cherokee 3.7L/4.7L Racing Thermostat 1999-2010: Performance Upgrade for Optimal Engine Cooling Review

6

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Average

Revainrating 3.5 out of 5  
Rating 
3.7
🔥 Engine Cooling, 🏎️ Performance Car Parts & Accessories

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img 1 attached to 🚗 Mishimoto MMTS-JGC-99L Jeep Grand Cherokee 3.7L/4.7L Racing Thermostat 1999-2010: Performance Upgrade for Optimal Engine Cooling
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Description of 🚗 Mishimoto MMTS-JGC-99L Jeep Grand Cherokee 3.7L/4.7L Racing Thermostat 1999-2010: Performance Upgrade for Optimal Engine Cooling

Fits multiple Chrysler applications with 3.7L PowerTech or 4.7L PowerTech. Lower activation temp allows coolant to flow through the engine earlier. Maintains lower temperatures and extends engine life. Mishimoto Activation: 180�F (82�C) / OEM Activation: 195�F (90.5�C). Mishimoto Lifetime Warranty.

Reviews

Global ratings 6
  • 5
    4
  • 4
    0
  • 3
    0
  • 2
    0
  • 1
    2

Type of review

Revainrating 1 out of 5

Excellent goods! best in Thermostats

My old Jeep got a little warm in the hot weather this year and this thermostat helped cool the engine down a bit on those hot summer days!

Pros
  • Durable finish
Cons
  • A little torn

Revainrating 5 out of 5

which isn't bad in AZ

The engine runs a little cooler and I'm sure you can increase the coolant circulation with this thermostat, which isn't bad in AZ.

Pros
  • Absolute Legend
Cons
  • weak

Revainrating 5 out of 5

Perfect fit for my car

The unit arrived in perfect condition. I installed and drove it while flushing the engine coolant and it works as described. Would definitely buy this product again.

Pros
  • Mishimoto Lifetime Warranty
Cons
  • Useless features

Revainrating 5 out of 5

Only after a day or so, but

I can already see the difference in the temperature sensor. Honestly, I hope this lasts as long as the thermostat I pulled out. I'm glad to see that I can actually scream about the difference in the sensors. Now I just hope this will help the motor last longer.

Pros
  • Mishimoto activation: 180°F (82°C) / OEM activation: 195°F (90.5°C)
Cons
  • Weight

Revainrating 1 out of 5

Too expensive and doesn't work as expected in my case.

It was expensive. And my coolant temp was still over 200°F. I was expecting the reading to be much lower. I went back to the OEM temperature thermostat. The temperature is still around 200°F, but at least it should be. I replaced the coolant temp sensor and flushed the entire cooling system to get the correct temp reading.

Pros
  • Keeps temperatures cooler and extends engine life
Cons
  • I don't really like it, everything is fine

Revainrating 5 out of 5

000,000 km and I am very satisfied. ENGINE TEMPERATURE REMAINS LOW EVEN AT 110 DEGREES.

JEEP GRAND CHEROKEE 4.7 2007 I RUN OVER 2000 MILES ON IT AND VERY SATISFIED. ENGINE TEMP REMAINS LOW EVEN ON THE 110 degree DAYS I spent in Arizona this month. I HAVE A HYPERTECH POWER PROGRAMMER THAT SOMETIMES THE CAR HEATS AND OVERHEATS EVEN ON THE LOWEST SETTING. I HAD TO RETURN TO STOCK BEFORE I ADDED THIS THERMOSTAT WHICH IMMEDIATELY SOLVED THE OVERHEATING PROBLEM AND NOW I CAN USE THE HIGHEST SETTING WITHOUT A SENSOR, EVEN TOUCHING THE HALF MARK ON THE SENSOR. EVEN IN THE FACTORY SETTING…

Pros
  • Lower activation temperature allows coolant to flow through the engine sooner
Cons
  • Long delivery time