Do I need to drain my coolant before installation?

Yes—your cooling system will need to be fully drained before removing the old radiator and installing this replacement. Have a drain pan ready and dispose of coolant properly. Refill with the coolant type specified in your owner's manual.

Will this work with my automatic transmission cooler lines?

This radiator is designed to handle both automatic and manual transmission cooling circuits. If your Highlander has an automatic transmission with integrated cooler lines, this radiator accommodates them—no adapter or modification needed.

What if the radiator arrives damaged during shipping?

Inspect your radiator immediately upon arrival. Photograph any visible damage and contact ModSupply customer service with photos and your order number within 48 hours of delivery for a replacement or return authorization.