Aluminum Radiator for Jeep Grand Wagoneer (1984-1988) 5.9L

Heavy-Duty 3-Row Aluminum Radiator for 1984-1988 Jeep Grand Wagoneer

Direct Cooling Upgrade: Replaces the failure-prone factory radiator with an all-aluminum, 3-row furnace-brazed core to maximize thermal dissipation and prevent engine overheating under load.

The Stock Grand Wagoneer Cooling Bottlenecks

The factory cooling system on the SJ platform struggles to shed heat generated by the AMC 360 V8 during low-speed crawling or heavy trailering. Original copper-brass units and aging replacement radiators suffer from internal tube scaling, core oxidation, and fatigued solder joints. Decades of thermal cycling weaken these seams, degrading coolant flow velocity and heat rejection. This breakdown leads to creeping coolant temperatures during hot idle, vapor lock vulnerability, and severe heat soak under load.

The Engineering Solution

This high-efficiency replacement features an all-aluminum core constructed with furnace-brazed tubes and high-density louvered fins, paired with hand TIG-welded structural aluminum end tanks. The 3-row configuration significantly increases fluid volume and active surface area over stock configurations. By eliminating brittle plastic tanks and failure-prone gaskets, this unit resists chassis torsion and internal cooling system pressure spikes without cracking or weeping.

Technical Specifications

Compatibility

• 1984 Jeep Grand Wagoneer 5.9L V8
• 1985 Jeep Grand Wagoneer 5.9L V8
• 1986 Jeep Grand Wagoneer 5.9L V8
• 1987 Jeep Grand Wagoneer 5.9L V8
• 1988 Jeep Grand Wagoneer 5.9L V8

The Jeep Durability Standard

Engineered specifically for the structural demands of the full-size SJ chassis, this cooling assembly maintains stable coolant operating temperatures whether pulling heavy cargo up steep highway grades or navigating technical trails at low speeds.