Mishimoto 18+ Jeep JL / 20+ JT (2.0L/3.6L/3.0L) Coolant Expansion Tank

The stock plastic coolant expansion tanks in Jeep Wranglers and Gladiators are known to crack and leak over time, especially under the stress of off-roading or daily driving. This Mishimoto aluminum expansion tank is built to address that weakness. It's constructed from TIG-welded aluminum, offering a much stronger and more reliable solution than the original plastic part. This tank is designed to increase coolant capacity, which helps with better cooling performance, and features internal baffling. This baffling is a smart design choice that helps prevent coolant aeration and sloshing when your Jeep is tilted or moving over rough terrain, keeping the system working efficiently.

Beyond its robust construction, this expansion tank also includes a convenient sight glass for easy fluid level checks, replacing the factory dipstick. The wrinkle black powder-coated finish not only adds a layer of corrosion resistance but also gives your engine bay a rugged, refined look. Installation is straightforward, making it a practical upgrade you can complete before your next weekend adventure, giving you peace of mind that your cooling system is ready for anything.

This expansion tank comes complete with a Mishimoto radiator cap and is backed by the company's lifetime warranty, offering a solid option for any Wrangler or Gladiator owner looking to improve their vehicle's cooling system reliability.