Radiator Dual Pass 31x19 Interchangeable Inlet

The Northern Radiator Dual Pass 31x19 Interchangeable Inlet is a high-capacity aluminum radiator designed for cooling systems that demand efficient heat dissipation and flexible installation options. The dual-pass design maximizes coolant flow efficiency by directing fluid through both upper and lower tank sections, reducing hotspots and improving overall thermal performance compared to single-pass configurations. This radiator measures 31 inches wide by 19 inches tall with a 3.125-inch core depth, making it suitable for mid-to-large displacement engines in domestic applications.

Constructed from aluminum, the Northern Radiator offers weight savings and superior heat transfer properties compared to brass or copper cores. The interchangeable inlet feature provides installation flexibility, allowing the radiator to accommodate different inlet and outlet configurations depending on your vehicle's plumbing layout. The passenger-side inlet and outlet orientation suits GM platform vehicles where factory mounting points and hose routing follow this specification. At 18.6 pounds, the compact footprint doesn't compromise on cooling capacity, making it practical for engine bays with space constraints or custom cooling system builds requiring precise fitment.

This radiator is engineered for street, strip, and custom automotive applications where reliable cooling under sustained operation is critical. Users upgrading cooling capacity, converting to upgraded water pump or engine combinations, or rebuilding a cooling system will find the Northern Radiator's dual-pass efficiency addresses heat rejection challenges without requiring extensive fabrication. The natural aluminum finish resists corrosion while maintaining aesthetic appeal in engine bays where the radiator remains visible. Verify inlet/outlet positioning matches your specific vehicle and hose configuration before ordering to ensure proper compatibility with existing coolant lines and mounting brackets.