77-87 GM P/U Radiator AT 21in Dual 14in Fans

The 77-87 GM P/U Radiator AT 21in Dual 14in Fans by COLD CASE RADIATORS is purpose-built for classic Chevrolet and GMC pickup owners seeking reliable cooling performance without compromising underhood aesthetics. This aluminum radiator assembly addresses the thermal demands of full-size trucks from the late 1970s through mid-1980s, whether you're running stock power or have upgraded to a higher-output engine. Mechanics and restoration enthusiasts choose this radiator for its direct-fit compatibility and efficient dual-fan setup that maintains consistent operating temperatures across highway and city driving.

Built from heavy-gauge aluminum cores, the 21-inch core depth maximizes surface area for superior heat dissipation compared to original equipment designs. The dual 14-inch electric fans operate independently, allowing one or both to engage based on engine temperature, which reduces parasitic drag at cruising speeds and improves fuel economy. The AT (automatic transmission) configuration ensures proper coolant routing and bypass logic for vehicles equipped with factory three-speed or four-speed automatics. At 48 pounds, this assembly is engineered for strength while remaining light enough for straightforward installation without requiring frame reinforcement or bracket fabrication.

Restoration builders and daily-driver operators benefit equally from this radiator's proven thermal regulation across ambient temperatures ranging from cold winter starts to desert highway runs. Installation requires no modifications to original mounting points on 1977–1987 GM full-size pickups, making this a bolt-in upgrade for anyone replacing a failed core or stepping up cooling capacity for a modified engine build. The dual-fan configuration is particularly valuable for trucks operated in stop-and-go traffic or towing scenarios where single-fan systems often struggle to maintain safe coolant temperatures.