Nissens 606644 Auxiliary Engine Coolant Radiator

The Nissens 606644 is an auxiliary engine coolant radiator engineered as a direct OE-quality replacement for select European passenger vehicles. Cross-referencing OEM part number 5Q0121253J, this radiator is designed and manufactured to OE specifications, delivering dependable thermal performance without compromise.

Built with an aluminum core and plastic tanks, the 606644 features brazed cooling fins for superior structural integrity and heat dissipation. With a core size of 195 x 186 x 26 mm, 20 mm inlet and outlet diameters, and included gaskets and seals (First Fit), this unit installs quickly and correctly the first time. Note: does not include a cap or expansion tank.

Key Features:

• Aluminum core with brazed cooling fins for efficient heat exchange and long-term durability
• Plastic water tanks with reinforced construction for reliable sealing
• Core dimensions: 195 mm (L) x 186 mm (W) x 26 mm (D)
• Inlet and outlet diameter: 20 mm each
• Includes gaskets and seals for a complete First Fit installation
• Cross-references OEM part number: 5Q0121253J
• Tested to OE standards: corrosion, vibration, pressure impulse, thermal expansion, and thermal performance
• Backed by Nissens' 24-month / 24,000-mile warranty against defects in materials and workmanship

Nissens has been a trusted name in thermal management since 1921, supplying OEM-quality cooling components to the global automotive aftermarket. The 606644 radiator upholds that legacy with precise fitment, robust construction, and tested reliability.