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Mishimoto low-temp thermostat with aluminum housing full view
Close-up of 82°C / 180°F thermostat
Mishimoto low-temp thermostat with aluminum housing
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Mishimoto 2018+ Jeep Wrangler JL / 2020+ Gladiator (3.6L) Thermostat w/ Aluminum Housing - 82C

Mishimoto
MISMMTS-MOP-18L
840197726198
Thermostats
20+ Units In Stock - Ships Next Business Day
$ 123.00 $ 111.95
$ 111.95

SKU: MMTS-MOP-18L   |   UPC: 840197726198

Mishimoto Low-Temp Thermostat with Aluminum Housing - 82°C (180°F) for 2018+ Jeep Wrangler JL / 2020+ Gladiator 3.6L

Don’t let a weak thermostat housing cut your adventure short. The Mishimoto MMTS-MOP-18L Low-Temp Thermostat with Aluminum Housing replaces the failure-prone stock plastic housing on the 2018+ Jeep Wrangler JL and 2020+ Gladiator (3.6L Pentastar) with a robust billet aluminum unit. Opening at 180°F (15°F earlier than the factory 195°F unit), it allows coolant to circulate sooner, keeping temperatures lower under load, towing, off-roading, or in hot climates. Includes everything needed for a complete, leak-free install and is backed by Mishimoto’s Lifetime Warranty.

Key Features

  • Durable Aluminum Housing: Eliminates the common plastic housing failure point and leaks
  • Low-Temp Thermostat: Opens at 180°F (15°F earlier than stock) for improved cooling efficiency
  • Ideal for Demanding Use: Perfect for towing, off-roading, and high-heat environments
  • Complete Kit: Includes thermostat, housing, gasket, temperature sensor, and O-ring
  • Direct Bolt-On Replacement: No modifications required
  • Mishimoto Lifetime Warranty: Complete peace of mind on every install

Specifications

Specification Detail
Part Number MMTS-MOP-18L
Opening Temperature 82°C / 180°F (Stock: 195°F)
Material Billet Aluminum Housing
Compatibility 2018+ Jeep Wrangler JL / 2020+ Gladiator 3.6L Pentastar (and other listed 3.6L vehicles)
Installation Bolt-On Direct Replacement
Country of Origin United States
Warranty Mishimoto Lifetime Warranty
Shipping Weight Approx. 3-4 lbs

What's Included

  • 1 x Aluminum Thermostat Housing
  • 1 x 82°C (180°F) Thermostat
  • 1 x Gasket
  • 1 x Temperature Sensor
  • 1 x O-Ring
  • Installation Instructions

Product Notes

  • Direct replacement for the factory plastic thermostat housing on 3.6L Pentastar engines
  • Earlier opening temperature helps prevent overheating in demanding conditions
  • Professional installation recommended for proper torque and leak-free seal

Installation Notes

  • Estimated time: 1-2 hours, moderate difficulty
  • Simple bolt-on replacement of the thermostat housing
  • Drain and refill coolant after installation

This Part Fits

Year Make Model Notes
2018+ Jeep Wrangler JL 3.6L V6
2020+ Jeep Gladiator JT 3.6L V6
2016+ Dodge Durango 3.6L V6
2016+ Jeep Grand Cherokee WK2 3.6L V6
2019+ Ram 1500 DT/DS 3.6L V6

Why Choose Mishimoto Low-Temp Thermostat with Aluminum Housing?

  • Eliminates the #1 failure point on the 3.6L Pentastar – the plastic housing
  • Lower opening temperature improves cooling under load and in hot conditions
  • Complete kit with everything needed and Mishimoto Lifetime Warranty

Frequently Asked Questions

  • Q: Will this fit my 2022 Jeep Wrangler JL 3.6L?
    A: Yes – direct fit for all 2018+ Wrangler JL and 2020+ Gladiator 3.6L models.
  • Q: Why does it open at a lower temperature?
    A: Opening at 180°F (vs stock 195°F) allows coolant to circulate sooner, helping prevent overheating.
  • Q: What is the warranty?
    A: Backed by Mishimoto’s Lifetime Warranty.

Shipping & Handling

  • Method: UPS / FedEx Ground
  • Availability: In stock ships same or next business day
  • Packaging: Secure protective packaging
  • Weight: Approx. 3-4 lbs

Request For Information

Have questions about Mishimoto 2018+ Jeep Wrangler JL / 2020+ Gladiator (3.6L) Thermostat w/ Aluminum Housing - 82C? Fill out the form below and we'll get back to you by the next business day.
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