Kenworth W900A Engine Parts & Cooling

Frequently Asked Questions About Kenworth W900A Engine Parts & Cooling

What years and engine models are compatible with your W900A cooling parts?

Our W900A engine cooling parts are designed to fit models from 1961 through 1966. We carry parts compatible with common engine configurations including Cummins NTC series, Detroit Diesel 6V71/8V71, and CAT 3406 engines. Always verify your specific engine model and serial number before ordering, as some cooling components varied between early and late production years. If you're unsure about compatibility, our team can help identify the correct parts using your OEM or engine serial number.

Are these radiators aluminum or copper/brass, and which is better for my truck?

We stock both aluminum and copper/brass radiators for the W900A. Copper/brass radiators offer superior heat dissipation and are easier to repair if damaged, making them ideal for heavy-duty applications or vintage restorations. Aluminum radiators are lighter weight and resist corrosion better, but require complete replacement if damaged. For show trucks or period-correct restorations, copper/brass maintains the original appearance. For daily drivers, aluminum offers modern efficiency and longevity.

What additional parts do I need when replacing my water pump or radiator?

When replacing a water pump, you'll need new gaskets, coolant hoses, clamps, and fresh coolant. We recommend replacing the thermostat simultaneously since you're already draining the system. For radiator replacements, budget for new upper and lower radiator hoses, transmission cooler lines (if applicable), radiator mounting cushions, and potentially a new radiator cap. Many customers also upgrade their fan clutch and belts during cooling system service to ensure optimal performance.

How difficult is it to install these cooling parts, and what tools are required?

Most cooling system components can be installed with standard hand tools, though some jobs require specific considerations. Water pump replacement typically takes 2-4 hours and requires basic wrenches, scrapers for old gasket removal, and possibly a pulley puller. Radiator swaps are more involved, requiring 4-6 hours and potentially requiring removal of the grille and hood for access. You'll need drain pans, jack stands, and basic metric and standard wrenches. Professional installation is recommended for inexperienced mechanics, as improper installation can cause overheating or engine damage.

Do you offer heavy-duty or high-performance cooling upgrades for modified engines?

Yes, we carry several performance cooling options for modified W900A engines. High-capacity aluminum radiators with additional core rows provide 20-30% more cooling capacity for turned-up engines. We also stock high-flow water pumps, heavy-duty fan clutches, and electric fan conversion kits for maximum cooling efficiency. For extreme applications, we can special order custom radiators with specific inlet/outlet configurations. Contact our technical team with your engine specifications and horsepower ratings for personalized upgrade recommendations.