Find the Direct-Fit Transmission Coolers & Lines you need to keep the transmission cool in your 2021-2022 Jeep Gladiator JT 3.0L EcoDiesel. Get increased cooling efficiency with an aftermarket transmission cooler that has a greater fluid capacity and core volume. Get OEM replacement cooler lines or performance braided hoses with billet -AN fittings for your vehicle. There are performance thermal bypass valves for some transmission coolers that can take the place of the troublesome factory thermal bypass valve. Mishimoto, Dorman, BD-Power, and more top-notch manufacturers are available.