Mishimoto Aluminum Coolant Expansion Tank - Jeep Wrangler JL 2018+ / Gladiator JT 2020+ 2.0L / 3.0L / 3.6L

Mishimoto TIG-welded aluminum coolant expansion tank for the 2018+ Jeep Wrangler JL and 2020+ Gladiator JT with the 2.0L, 3.0L or 3.6L engine. The factory plastic tanks are prone to cracking and leaking at the seams, and this aluminum tank replaces them with a far more durable unit. It increases fluid capacity over the factory design and uses internal OEM-style baffling to reduce aeration and sloshing off-camber. A wrinkle-black powder-coated finish resists corrosion, and a built-in sight glass replaces the factory dipstick for quick fluid checks.

Specifications

This part fits:

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy