Kenworth W900B/W900L Radiators

Frequently Asked Questions About Kenworth W900B/W900L Radiators

Will this radiator fit both the W900B and W900L models?

Radiator fitment can vary by year, engine option, and cab configuration even within the W900B and W900L lineup. Always check the core dimensions, tank style, and mounting hole pattern listed in the product details against your truck's specifications or existing radiator before ordering. If you are unsure, have your VIN and engine information ready when reaching out to our parts specialists for confirmation.

Is this radiator made from aluminum or copper/brass, and does it matter?

Radiators in this category may be offered in aluminum or copper/brass construction depending on the manufacturer. Aluminum radiators tend to be lighter and resist corrosion well, while copper/brass units are often chosen for their durability and heat transfer characteristics. Review the product description for the specific material used so you can match it to your truck's original setup or your own preference.

Does the radiator come with the end tanks, mounting brackets, and cap included?

Not all radiators are sold as complete assemblies. Some come with tanks and brackets pre-installed, while others are bare cores that require you to transfer over your existing tanks and hardware. Check the product listing carefully for what is included so you are not caught without a necessary component during install.

What should I check before installing a replacement radiator?

Before installation, inspect your hoses, clamps, mounting brackets, and fan shroud for wear, since these are often reused with a new radiator. Confirm the inlet and outlet locations match your truck's cooling system layout, and make sure the radiator is free of shipping damage before mounting it. Once installed, refill with the correct coolant and check for leaks after the engine reaches operating temperature.

How do I know if I need a new radiator versus having mine repaired?

If your radiator has minor leaks or a damaged tank, a repair may be possible, but persistent leaking, extensive corrosion, clogged cores, or damaged fins are usually signs it is time for a replacement. A new or quality reconditioned radiator helps ensure consistent cooling performance and can prevent repeat breakdowns compared to patching an aging unit.