Aluminum Radiator for Jeep Comanche (1986-1990) 2.5L 2.8L

High-Efficiency 4-Row Aluminum Radiator for 1986-1990 Jeep Comanche

Direct-fit thermal management upgrade: Replaces failure-prone factory cooling cores with a high-capacity 4-row all-aluminum assembly designed to prevent low-speed heat soak and eliminate seam leaks under load.

The Stock Comanche Plastic Tank & Solder Degradation

Original Jeep MJ cooling systems utilized plastic end tanks crimped onto thin aluminum cores or brittle copper-brass brazing. Over decades of thermal cycles and chassis twist on unpaved terrain, factory crimp gaskets harden, split, and leak under operating pressure. Furthermore, restricted factory tube volumes quickly succumb to thermal saturation during low-speed rock crawling or hill climbs, leading to vapor lock and dangerous coolant spikes in both the AMC four-cylinder and GM-sourced V6 platforms.

The Engineering Solution

This direct replacement is constructed from aircraft-grade aluminum featuring 100% TIG-welded end tanks and a furnace-brazed 4-row core. By eliminating failure-prone plastic tanks and mechanical crimp seals, burst tolerance is substantially increased. The dense fin-and-tube arrangement expands coolant contact surface area, enhancing thermal dissipation rates even in low-velocity airflow scenarios. It drops directly into the OEM factory mounts without chassis modification.

Technical Specifications

Compatibility

• 1986 Jeep Comanche (2.5L I4 AMC 150, 2.8L V6 GM LR2)
• 1987 Jeep Comanche (2.5L I4 AMC 150)
• 1988 Jeep Comanche (2.5L I4 AMC 150)
• 1989 Jeep Comanche (2.5L I4 AMC 150)
• 1990 Jeep Comanche (2.5L I4 AMC 150)

The Jeep Trail Durability Standard

Engineered for the demands of off-camber articulation, utility hauling, and prolonged trail idle. The reinforced core structure absorbs off-road vibration while maintaining consistent thermal rejection to safeguard your powertrain in rough back country.