Nissan Altima 2007-2018 Maxima 2009-2019 Radiator 2.5L 3.5L, CU2988 21460-ZN50A, Aluminum Core BDFHYK

Restore stable engine cooling with this direct-fit replacement radiator for select Nissan Altima and Maxima models. Built with an aluminum core and OE-style mounting points, it is designed to replace a leaking, clogged, corroded, or damaged factory radiator and help maintain proper engine operating temperature during daily driving, highway use, and warm-weather operation. 

Vehicle Fitment & OE Reference Numbers

OE / Interchange Reference Numbers: CU2988, 2988, 8012988, 21460-ZN50A, 21460-JA00A, 21410-ZN50A, 21410-JA00A, 13542.

Before ordering: Compare the OE number, overall dimensions, inlet and outlet positions, mounting points, drain location, and fan shroud mounting configuration with the original radiator.

Product Specifications & Package Includes

Package Includes: 1 × complete radiator and 1 × product specification sheet.

Signs Your Radiator Needs Replacement

• The engine temperature runs higher than normal or the vehicle overheats.
• Coolant leaks appear around the radiator, end tanks, hose connections, drain area, or lower corners.
• The coolant level drops repeatedly without an obvious hose leak.
• Plastic end tanks are cracked, swollen, or discolored.
• Cooling fins are heavily bent, corroded, clogged, or damaged.
• The temperature gauge fluctuates during city driving, idling, or hot weather.

Replacing a worn or damaged radiator helps restore coolant flow and heat transfer, reducing the risk of repeated overheating and related engine damage.

Key Features & Benefits

Direct OE-Style Replacement: Designed around factory-style mounting locations and hose connections for compatible Nissan Altima and Maxima applications.

16 mm Aluminum Core: The aluminum core provides efficient heat transfer while remaining lightweight and corrosion resistant.

Leak Tested: Each radiator is checked before shipment to support dependable cooling-system performance.

Efficient Cooling Performance: Helps transfer heat away from the engine coolant and maintain a stable operating temperature during commuting, highway driving, and warm-weather use.

Built for Replacement Service: Suitable for replacing radiators affected by leaks, internal blockage, damaged fins, corrosion, or cracked tanks.

Installation Notes & 4-Step Guide

Important: The cooling system may be pressurized and contain hot coolant. Allow the engine to cool completely before beginning. Professional installation is recommended if you are not experienced with cooling-system service.

1. Drain: Disconnect the battery if required, remove the radiator cap only when the engine is fully cool, and drain the old coolant into a suitable container.
2. Remove: Disconnect the upper and lower radiator hoses, overflow hose, fan or shroud components, and factory mounting hardware. Remove the old radiator carefully.
3. Install: Compare both radiators before fitting. Transfer reusable brackets, cushions, sensors, drain plugs, or fittings when required, then install the new radiator using the factory mounting points.
4. Refill & Bleed: Reconnect all hoses, refill with the vehicle manufacturer-recommended coolant mixture, bleed trapped air from the cooling system, and check all connections for leaks.

After installation: Inspect the radiator hoses, clamps, cap, thermostat, cooling fans, coolant reservoir, and water pump. Run the engine until operating temperature is reached, confirm fan operation, check all connections for leakage, and recheck the coolant level after the first drive and again after the engine cools.