3-Row Radiator for Jeep Wrangler YJ TJ 1987-2006 2.4L 2.5L 4.0L 4.2L, Replace CU2101 RAD1682X, 44mm Core BDFHYK

Restore and upgrade cooling performance with this direct-fit replacement radiator for select Jeep Wrangler YJ and TJ applications. Built with a 3-row, 44 mm aluminum core and supplied with a customized radiator cap, 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, warm-weather operation, low-speed trail driving, and other demanding conditions. 

Vehicle Fitment & OE Reference Numbers

OE / Interchange Reference Numbers: CU2101, RAD1682X, 2101, 2760, 1015, 1507, RK782, CH3010221, 040876420151, 52028120, 5200612, 675.

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

Product Specifications & Package Includes

Package Includes: 1 × 3-row 44 mm radiator, 1 × customized radiator cap, and 1 × instruction manual.

Signs Your Radiator Needs Replacement

• The engine runs hotter than normal or overheats during idling, climbing, or low-speed trail 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 stop-and-go traffic, warm weather, or off-road driving.
• The existing radiator no longer provides stable cooling for a restored or modified Jeep.

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: The larger core provides increased cooling surface area and coolant capacity for compatible Jeep applications.

YJ and TJ Fitment: Designed around compatible mounting and hose locations for 1987-1995 Wrangler YJ and 1997-2006 Wrangler TJ models.

Stable Cooling in Demanding Conditions: Helps support engine temperature during commuting, highway driving, warm weather, low-speed crawling, and trail use.

Customized Radiator Cap Included: Supplied as part of the package for the specified radiator configuration.

Built for Replacement and Upgrade Service: Suitable for replacing radiators affected by leaks, corrosion, internal blockage, damaged fins, or weakened seams.

Installation Notes & 4-Step Guide

Important: Older or modified Jeeps may have different brackets, hoses, fans, or engine-bay layouts. Compare the original setup carefully before installation. Professional installation is recommended.

1. Drain: Allow the engine to cool completely, remove the radiator cap carefully, and drain the old coolant.
2. Remove: Disconnect the radiator hoses, overflow hose, fan shroud or related components, and mounting hardware.
3. Install: Compare the dimensions and mounting points, transfer reusable brackets or cushions when required, and install the new radiator.
4. Refill & Bleed: Reconnect all hoses, refill with the recommended coolant mixture, bleed trapped air, and inspect for leaks.

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