3-Row Radiator for Chevy C1500 K1500 C2500 K2500 1988-1999, GMC Suburban 1992-1995, Replace CU622 8010622, 44mm Core BDFHYK

Restore and upgrade cooling performance with this direct-fit replacement radiator for select Chevrolet and GMC OBS full-size truck and SUV applications. Built with a 3-row, 44 mm aluminum core and supplied with a radiator cap and thermostat switch, it is designed to replace an aged, leaking, clogged, corroded, or damaged factory radiator and help maintain stable engine temperature during daily driving, highway use, towing, hauling, idling, and warm-weather operation. 

Vehicle Fitment & OE Reference Numbers

OE / Interchange Reference Numbers: CU622, DPI622, 8010622, SBR622, AE622.

Before ordering: Compare the OE number, overall dimensions, inlet and outlet positions, mounting points, drain location, thermostat switch requirements, and engine-bay clearance with the original setup.

Product Specifications & Package Includes

Package Includes: 1 × 3-row 44 mm aluminum radiator, 1 × radiator cap, and 1 × thermostat switch.

Signs Your Radiator Needs Replacement

• The engine runs hotter than normal or overheats during towing, hauling, idling, or warm-weather use.
• Coolant leaks appear around the radiator, seams, hose connections, drain area, or lower corners.
• The coolant level drops repeatedly without an obvious hose leak.
• The original radiator shows corrosion, damaged fins, internal blockage, or weakened seams.
• The temperature gauge fluctuates during city traffic, climbing, highway driving, or heavy-load use.
• The existing radiator no longer provides stable cooling for a restored or modified OBS truck.

Replacing an aged radiator helps restore coolant circulation and heat transfer, reducing the risk of repeated overheating and related engine damage.

Key Features & Benefits

3-Row 44 mm Aluminum Core: Provides increased cooling surface area and coolant capacity for compatible OBS truck and SUV applications.

OBS Platform Fitment: Designed around CU622-style mounting and connection locations for compatible Chevrolet and GMC full-size vehicles.

Stable Cooling Under Load: Helps support engine temperature during commuting, towing, hauling, warm weather, traffic, and restoration use.

Radiator Cap & Thermostat Switch Included: Supplied as part of the package for the specified radiator configuration.

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

Installation Notes & 4-Step Guide

Important: Older vehicles may have modified engines, brackets, hoses, fans, or electrical systems. Compare the original setup carefully and confirm thermostat switch requirements before installation. Professional installation is recommended.

1. Drain: Allow the engine to cool completely, remove the radiator cap carefully, and drain the old coolant into a suitable container.
2. Remove: Disconnect the radiator hoses, overflow hose, fan shroud or related components, and factory mounting hardware.
3. Install: Compare the dimensions and connection points, transfer reusable brackets or cushions when required, install the new radiator, and fit the thermostat switch according to the applicable setup.
4. Refill & Test: Reconnect all hoses, refill with the vehicle manufacturer-recommended coolant mixture, bleed trapped air, verify switch operation where applicable, and inspect all connections for leaks.

After installation: Inspect the hoses, clamps, radiator cap, thermostat, cooling fan, water pump, switch connection, and engine-bay clearance. Recheck coolant level and all mounting points after the first drive and again after the engine cools.