Radiator for Chevy Silverado 1500 1999-2013, Sierra 1500 1999-2013, Tahoe Suburban Yukon Escalade 2000-2014, Replace CU2423 15193108, Aluminum Core BDFHYK

Restore reliable cooling performance with this direct-fit replacement radiator for select Chevrolet, GMC, Cadillac, and Hummer full-size truck and SUV applications. Designed around OE-style mounting locations, it uses an aluminum core to replace a leaking, clogged, corroded, or damaged factory radiator and help maintain stable engine operating temperature during daily driving, towing, hauling, highway use, and hot-weather operation. 

Vehicle Fitment & OE Reference Numbers

OE / Interchange Reference Numbers: CU2423, 2423, 8012423, 15193108, 15841571, 19256745, 22840117.

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 × replacement radiator.

Signs Your Radiator Needs Replacement

• The engine runs hotter than normal or overheats during towing, hauling, idling, or hot-weather driving.
• Coolant leaks appear around the radiator tanks, seams, hose connections, drain area, or lower corners.
• The coolant level drops repeatedly without an obvious hose leak.
• Plastic end tanks are cracked, swollen, discolored, or separating from the aluminum core.
• Cooling fins are bent, clogged, corroded, or damaged.
• The temperature gauge fluctuates during stop-and-go traffic, climbing, or heavy-load use.

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, hose connections, and fan shroud positions for compatible GM full-size truck and SUV applications. Compare the original radiator before installation to confirm the correct configuration.

Aluminum Core Construction: The aluminum core supports efficient heat transfer while remaining lightweight and corrosion resistant.

Stable Cooling Under Load: Helps maintain engine temperature during daily commuting, towing, hauling, highway travel, and high-heat operating conditions.

Replacement for Common Cooling Problems: Suitable for replacing radiators affected by leaks, internal blockage, damaged fins, corrosion, cracked tanks, or weakened seals.

OE-Reference Fitment: Built to match compatible factory radiator locations and simplify installation without custom fabrication when the correct configuration is selected.

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 after the engine has fully cooled, and drain the old coolant into a suitable container.
2. Remove: Disconnect the upper and lower radiator hoses, overflow hose, fan shroud or electric fan assembly, and factory mounting hardware. Remove the old radiator carefully.
3. Install: Compare both radiators before fitting. Transfer reusable brackets, rubber cushions, drain plugs, sensors, fittings, or fan shroud hardware 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 inspect every connection 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.