19in. x 31in. x 3in. Radiator GM Aluminum

The 19in. x 31in. x 3in. Radiator GM Aluminum (Part Number 1-25272-X) is a purpose-built cooling solution designed for classic and modern GM vehicle platforms. This aluminum radiator features a compact 3-inch core depth with driver-side inlet and passenger-side outlet configuration, optimizing coolant flow efficiency for vehicles where space constraints or custom cooling system layouts demand precision engineering. Built from lightweight aluminum construction, this radiator balances thermal performance with reduced overall system weight compared to traditional copper-brass designs.

The 31-inch width and 19-inch height dimensions make this unit suitable for custom installations, restorations, and performance cooling upgrades where OEM or larger-capacity radiators don't fit. At 18 pounds, the aluminum construction delivers meaningful weight savings—critical for vehicles where reducing unsprung or front-end mass improves handling and fuel economy. The natural aluminum finish provides excellent heat dissipation and resists corrosion when properly maintained, though powder coating or protective sealants are recommended for extended durability in harsh environments or high-humidity conditions.

This radiator suits restoration shops, performance builders, and GM enthusiasts tackling custom cooling challenges where off-the-shelf solutions require modification or compromise. The precise inlet/outlet configuration allows direct integration into existing manifold and thermostat housing setups without adapter fittings, reducing complexity and potential leak points. Whether upgrading cooling capacity for higher ambient temperatures, reducing system bulk for weight-conscious builds, or replacing a failed original unit, this aluminum radiator delivers straightforward fitment and reliable thermal management for its specified dimensional class.