For your Toyota Avalon engine to work the best it can, it needs to not overheat. That's where a dependable original radiator comes in. How Toyota Avalon radiators work is simple: they fan hot engine coolant, getting rid of its heat. Your factory radiator is essentially a core block containing several flat aluminum tubes brazed into fins. The coolant flowing back and forth between its inlets and outlets absorbs heat as it moves. To trap more heat, a pressure cap compresses the fluid while it travels. The fins jet the heat into the surrounding air, and a fan disperses it. A cool engine results, and a cooler engine both functions better and lasts longer. If you hear bizarre engine noises, smell syrupy ethylene glycol, your coolant gets dirty or sludgy, you've got an antifreeze leak, or your sedan is running hot, you probably have radiator problems. Ditto for if you've got fin damage or your AC and heating system is malfunctioning. The most direct sign of a bad radiator, however, is an overheating engine. Luckily, when it's time to replace the radiator in your Toyota Avalon, you can get the best one for the job right here at our auto parts store: genuine Toyota. Order online now and check the project off your list with peace of mind!