Used Genuine OEM Transmission Heater for Jeep Grand Cherokee 2021–2026

Transmission Heater / Heat Exchanger - Jeep Grand Cherokee Genuine OEM Used (Part Number: 68379505AB)

Genuine factory OEM used transmission heater and fluid heat exchanger (electronic transmission warmer assembly) in excellent and very clean condition. Compatible with the new generation Jeep Grand Cherokee (WL) models—including both the standard 2-row and the 3-row L variants—it serves as an essential component of the vehicle's advanced thermal management system. It accelerates transmission fluid to its optimal operating temperature and provides cooling later on, ensuring smooth gear shifts and protecting internal powertrain components in accordance with factory specifications.

Technical Specifications

Technical Note: The transmission heater plays a critical dual role in modern Grand Cherokee vehicles; it utilizes hot engine coolant to quickly raise the Automatic Transmission Fluid (ATF) temperature upon cold starts to minimize internal mechanical friction and optimize fuel efficiency. Once up to temperature, it switches functions to act as a fluid cooler during long drives and harsh, high-heat operating conditions. The most severe failure associated with this component is internal tube corrosion, which causes engine coolant and transmission fluid to mix (cross-contamination)—a catastrophic event that completely destroys the transmission's internal clutch packs. This heat exchanger has been meticulously inspected at our salvage facility and subjected to rigorous hydraulic pressure testing to verify that all internal chambers are 100% intact with absolutely zero fluid leaks or cross-flow between the passages. All inlet and outlet ports are verified clean and free of sludge, fitting into place with millimeter precision to guarantee safe, factory-spec performance.