Radiator Coolant Overflow Tank Reservoir Jeep Grand Cherokee Dodge Durango (2011-2024) 3.6L 5.7L 6.2L

Direct-Fit Radiator Coolant Overflow Tank Reservoir for 2011-2024 Jeep, Dodge Grand Cherokee, Durango

Direct OEM replacement coolant expansion tank engineered to safely regulate cooling system pressures and restore fluid containment.

The Stock Grand Cherokee, Durango Heat Cycling Vulnerability

The factory coolant reservoir in the WK2 Grand Cherokee and WD Durango is subjected to extreme thermal stress, particularly in engine bays housing the heat-generating 5.7L HEMI and 6.2L Hellcat powerplants. Over thousands of miles, continuous heat cycling causes the OEM high-density polyethylene (HDPE) plastic to degrade and become brittle. This micro-cracking compromises structural integrity, typically initiating at the seam welds or barbed hose nipples. Once the pressure seal is broken, the cooling system loses its ability to maintain its factory 16-18 psi rating, leading to localized coolant boiling, pressure loss, evaporation, and eventually overheating conditions that threaten head gasket integrity.

The Engineering Solution

This premium aftermarket expansion tank is manufactured to exact factory specifications using upgraded, thermal-resistant automotive-grade thermoplastics. The redesigned construction specifically addresses the structural weaknesses of the OEM tank by reinforcing the internal baffling and seam welds to better withstand high-pressure engine loads and prolonged heat soak conditions. It features exact-match mounting tabs, standardized hose connections, and an integrated fluid level sensor port to ensure seamless plug-and-play integration. By restoring a leak-free, high-pressure seal, this reservoir maintains optimal boiling point elevation for the coolant, ensuring stable operating temperatures whether you are towing heavy loads with the Pentastar 3.6L or managing the extreme thermal output of the supercharged 6.2L V8.

Technical Specifications

Compatibility

• Dodge Durango:
  • 2011-2024 Citadel, R/T
  • 2011-2015, 2023-2024 SXT
  • 2011 Durango Express, Heat
  • 2011-2013 Durango Crew
  • 2012-2013 Durango Crew Plus
  • 2012-2024 Special Service
  • 2014-2015 Limited, Rallye
  • 2017-2018, 2023-2024 GT
  • 2018-2021 SRT
  • 2018-2024 Enforcer, Pursuit
  • 2021, 2023 SRT Hellcat
  • 2022-2024 R/T Plus, SRT 392
  • 2023-2024 GT Plus, GT Premium, R/T Premium, SRT 392 Plus, SRT 392 Premium, SRT Hellcat Plus, SRT Hellcat Premium, SXT Plus
  • 2023 R/T Hemi Orange
• Jeep Grand Cherokee:
  • 2011-2021 Limited, Overland
  • 2011-2015 Laredo
  • 2012-2013 Laredo E, Laredo X, SRT8
  • 2012 Overland Summit
  • 2013-2021 SRT
  • 2014-2021 Summit
  • 2017-2021 Trailhawk
  • 2018-2021 Trackhawk, High Altitude
  • 2019-2020 Limited X
  • 2021 80th Anniversary
  • 2022 WK (Altitude, Laredo, Laredo E, Laredo X, Limited, Limited X)

The Dodge & Jeep Durability Standard

Engineered to endure the heavy-duty demands of high-capacity towing and high-horsepower performance driving, ensuring your Mopar cooling system remains structurally sound and reliable on the trail or the highway.