Radiator for Ford F-250 F-350 F-450 F-550 Super Duty 2003-2007 6.0L Diesel, Excursion 2003-2005, Replace CU2741 4C3Z8009BA, 2-Row 40mm Core BDFHYK

Restore dependable cooling performance with this direct-fit replacement radiator for select Ford Super Duty trucks and Ford Excursion models equipped with the 6.0L V8 diesel engine. Built with a 2-row, 40 mm aluminum core and OE-style mounting points, it is designed to replace a leaking, clogged, corroded, or damaged factory radiator and help maintain stable engine temperature during towing, hauling, long-distance driving, steep grades, and hot-weather operation. 

OE / Interchange Reference Numbers: CU2741, 2741, DPI 2741, 4C3Z-8009-BA, 4C4Z-8009-BA, FO3010256.

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 replacement radiator.

Signs Your Radiator Needs Replacement

• The engine runs hotter than normal or overheats during towing, hauling, climbing, or idling.
• 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 core.
• Cooling fins are bent, clogged, corroded, or damaged.
• The temperature gauge fluctuates during heavy-load use, long highway drives, 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, hose connections, and fan shroud positions for compatible Ford Super Duty and Excursion applications.

2-Row 40 mm Aluminum Core: The larger core provides increased cooling surface area and coolant capacity to support heat dissipation in heavy-duty diesel applications.

Stable Cooling Under Load: Helps maintain engine temperature during towing, hauling, steep-grade driving, high-heat operation, and long-distance use.

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

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

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 heavy-duty 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 fan assembly, and factory mounting hardware. Remove the old radiator carefully.
3. Install: Compare both radiators before fitting. Transfer reusable brackets, 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 all connections for leaks.

After installation: Inspect the radiator hoses, clamps, cap, thermostat, cooling fan, 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.