The Mishimoto performance transmission cooler for the 2018-2025 Jeep Wrangler JL and 2020-2025 Gladiator JT keeps the 8-speed ZF transmission cool whether cruising the highway or crawling a trail. The stock cooler is the weak link given poor airflow and a cramped cooling stack; this custom-designed cooler extracts more cooling from the air through the grille with a 93% increase in external tube area and 32% increase in external fin area. Internal fins add fluid-contact surface area and, combined with an 83% increase in fluid capacity, keep the transmission safe even at low airflow.
| Brand | Mishimoto |
| Type | Performance transmission cooler |
| Transmission | 8-speed ZF (auto) |
| vs. Stock | +93% external tube area, +32% external fin area, +83% fluid capacity |
| Warranty | Mishimoto Lifetime Warranty |
Documents: Installation Instructions (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2020-2025 | Jeep | Gladiator | Sport / Sport S / Rubicon / Mojave / Overland / Willys (all trims) |
| 2018-2025 | Jeep | Wrangler | Sport / Sport S / Rubicon / Sahara / Willys (incl. 4xe, all trims) |
| 2018-2022 | Jeep | Wrangler | Unlimited (Sport / Sport S / Rubicon / Sahara / Willys, incl. 4xe) |
Fits automatic-transmission models; see the Mishimoto MMTC-JL-18SL application guide for the complete trim list.
