YITAMOTOR Replacement Radiator for 1999–2004 Jeep Grand Cherokee 4.0L — Aluminum Core with Integrated Oil Cooler

YITAMOTOR's replacement radiator is a direct-fit aluminum core cooling unit engineered to swap into 1999–2004 Jeep Grand Cherokee 4.0L 6-cylinder models to restore reliable engine cooling.

If your Grand Cherokee is running hot, leaking coolant, or showing signs of a failing heat exchanger, this YITAMOTOR OE-style radiator matches factory mounting points and hose locations for a straightforward installation. Built with a high-density aluminum core, reinforced nylon tanks, and a welded construction, it aims to provide improved heat dissipation and long-term durability compared with many aftermarket alternatives. Before ordering, verify vehicle year, engine, and body style compatibility and note that the radiator cap is not included.

How does this radiator improve cooling compared to a worn original?

The YITAMOTOR unit uses closely spaced aluminum tubes and fins to increase the surface area available for heat transfer, so coolant sheds heat more effectively as it passes through. An integrated aluminum oil cooler section also helps manage temperatures around transmission or engine oil systems on applicable models.

• High-density aluminum core for faster heat dispersion
• Integrated aluminum oil cooler for balanced thermal control
• Welded construction reduces internal leakage risks

Will this radiator fit my 1999–2004 Jeep Grand Cherokee?

This radiator is made to match OE mounting locations for 1999–2004 Grand Cherokee models with the 4.0L inline-6 engine (Laredo, Limited, SE, Sport, and special editions listed). Double-check your vehicle’s engine code and model year before purchase since variations exist across trims and production runs.

• Compatible with 1999–2004 Grand Cherokee 4.0L L6 models
• Core size: 23.4" x 21.2" — designed to align with factory space
• Header dimensions: 22.6" x 2.4" x 2.4" for proper fitment

Is this radiator durable and leak-resistant for daily driving?

YITAMOTOR radiators use glass-fiber reinforced PA66 nylon tanks that can better withstand temperature cycling and vibration without cracking compared with some cheaper plastics. Each unit is seam-welded and pressure-tested to minimize the chance of leaks, and packaging is designed to protect the radiator in transit.

• Reinforced nylon PA66 inlet/outlet tanks reduce crack risk
• Seamless welding and factory leak-testing improve reliability
• Secure packaging with PE foam and multi-layer cardboard

How difficult is installation and what should I prepare?

The radiator follows OE design points so it installs with existing mounts and hose connections; many owners can complete the swap with basic tools, but professional installation is recommended for those unfamiliar with coolant system bleeding and torque specifications. Remember the radiator cap is not included and you may need to transfer or replace sensors, hoses, and the cap during the job.

• OE-style layout for straightforward fit and alignment
• Radiator cap and some hardware may need to be reused or replaced
• Professional installation recommended to ensure proper bleed and leak checks

Who is this for: This YITAMOTOR radiator is intended for owners of 1999–2004 Jeep Grand Cherokee models equipped with the 4.0L inline-6 who need a like-for-like replacement that balances improved cooling performance with direct-fit convenience. It suits DIY mechanics with the right tools and experience as well as shops seeking a dependable aftermarket radiator that mirrors OE dimensions and connections. If you’re replacing a cracked tank, corroded core, or a leaking heat exchanger, this unit is built to restore cooling capacity and get your vehicle back on the road.