Performance Radiator for Pontiac G8 (2008-2009) 6.0L 6.2L Automatic

High-Efficiency 4-Row All-Aluminum Performance Radiator for 2008-2009 Pontiac G8

Primary Function: Delivers superior heat rejection and cooling capacity for Gen IV V8 powertrains by replacing brittle factory plastic-tank assemblies with an all-welded, high-density core.

The Stock G8 Thermal Dissipation Deficit

Factory Zeta-platform radiators rely on plastic end tanks crimped to single-row aluminum cores using elastomer gaskets. Over repeated thermal cycles, the differential expansion rates between polymer and aluminum cause micro-fractures, gasket degradation, and catastrophic pressure loss along the tank seams. Additionally, stock single-row cores lack the thermal capacity to shed sustained fluid temperatures during aggressive driving, leading to elevated coolant and transmission fluid heat soak on 6.0L and 6.2L applications.

The Engineering Solution

Constructed from high-tensile AA5052 aircraft-grade aluminum, this direct-fit downflow radiator features 2 mm thick TIG-welded tanks and a vacuum-brazed 4-row tube core. Multi-louvered cooling fins spaced at 14–16 FPI (fins per inch) maximize ambient air turbulence and convective heat transfer without restricting engine bay airflow. An integrated internal transmission oil cooler (TOC) ensures synchronized fluid stabilization, while a CNC-machined filler neck and heavy-duty brass petcock prevent fluid loss under high-pressure cooling scenarios.

Technical Specifications

Compatibility

• 2008 Pontiac G8 GT 6.0L V8 Automatic
• 2009 Pontiac G8 GT 6.0L V8 Automatic
• 2009 Pontiac G8 GXP 6.2L V8 Automatic
• Note: Does not fit Pontiac GTO or manual transmission models without external cooler modifications.

The Pontiac Performance Standard

Engineered to handle the immense thermal output of high-displacement GM small-block V8s, this heavy-duty cooling assembly prevents power-robbing timing retard and maintains optimal engine and transmission operating temperatures under maximum load.