Performance Radiator for Pontiac Grand Am (1999-2005) 2.2L 2.4L 3.4L Automatic

Heavy-Duty 3-Row All-Aluminum Performance Radiator for 1999-2005 Pontiac Grand Am

What it Does: Replaces failure-prone factory composite-tank units with a heavy-duty, all-aluminum crossflow cooling core designed to maximize heat dissipation and maintain stable engine and transmission fluid temperatures.

The Stock Grand Am Cooling Degradation

Factory GM N-body radiators rely on single-row aluminum cores bonded to molded plastic end tanks with crimped rubber gaskets. Over repeated thermal expansion cycles, these plastic end tanks become brittle, developing hairline stress fractures along the inlet neck and tank seams. The standard single-row layout also suffers from severe heat soak under demanding highway driving or spirited acceleration, pushing operating temperatures near critical thresholds on both four-cylinder and 3400 V6 applications.

The Engineering Solution

This direct bolt-on upgrade features a 100% TIG-welded, aircraft-grade aluminum construction, eliminating plastic end tanks and failure-prone crimped gaskets entirely. Built with an oversized 3-row crossflow racing core measuring 26-1/4 inches wide by 14-1/8 inches high, it drastically expands fluid capacity and surface area contact for improved convective cooling. It includes an integrated internal transmission oil cooler (TOC) with standard 1-5/16-inch inlet/outlet connections and comes complete with a high-pressure radiator cap.

Technical Specifications

Compatibility

• 1999-2005 Pontiac Grand Am SE (2.2L L4, 2.4L L4, 3.4L V6 Automatic)
• 1999-2005 Pontiac Grand Am SE1 (2.2L L4, 2.4L L4, 3.4L V6 Automatic)
• 1999-2005 Pontiac Grand Am SE2 (3.4L V6 Automatic)
• 1999-2005 Pontiac Grand Am GT (3.4L V6 Automatic)
• 1999-2005 Pontiac Grand Am GT1 (3.4L V6 Automatic)

The Pontiac Performance Standard

Engineered to handle sustained thermal loads, this high-efficiency core delivers the cooling headroom required to preserve transmission longevity and engine reliability under daily driving or performance conditions.