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Mishimoto aluminum coolant expansion tank for 2018+ Jeep Wrangler JL and 2020+ Gladiator JT (2.0L/3.6L/3.0L) replaces the factory plastic reservoir with a TIG‑welded unit that increases fluid capacity and adds internal baffling to reduce aeration and slosh off‑road. The wrinkle black powder‑coat resists corrosion, a sight glass simplifies checks, and the kit includes a Mishimoto radiator cap. Installation is straightforward and the tank is backed by a Lifetime Warranty.
Mishimoto 18+ Jeep JL / 20+ JT (2.0L/3.6L/3.0L) Coolant Expansion Tank
