Frequently Asked Questions About Kenworth T800 Fan Blades & Shrouds

Will these fan blades and shrouds fit my specific year Kenworth T800?

Most fan blades and shrouds for the Kenworth T800 are compatible with models from 1987 through 2023. However, there are important variations based on your engine type (Caterpillar, Cummins, or PACCAR) and radiator configuration. Always verify the part number against your existing fan blade or check your engine serial number. For 2008 and newer models with emission controls, you may need specific high-flow designs. Contact our parts specialists with your VIN if you're unsure about compatibility.

What's the difference between plastic and metal fan blades, and which should I choose?

Plastic (composite) fan blades are lighter weight, reducing strain on the water pump and improving fuel economy. They're also quieter and resist corrosion. Metal fan blades, typically aluminum or steel, offer superior durability in extreme conditions and are less prone to cracking from debris impacts. For most over-the-road applications, composite blades work excellently. Choose metal if you frequently operate in harsh environments like logging, mining, or extreme temperature conditions.

Do I need to replace the fan clutch when installing a new fan blade?

While not always necessary, it's highly recommended to inspect your fan clutch during blade replacement. Signs of clutch failure include excessive fan noise, poor cooling performance, or oil leakage around the clutch. If your clutch is over 500,000 miles or showing wear, replacing both components together saves labor costs and ensures optimal cooling system performance. A worn clutch can cause premature fan blade failure.

What tools and time are required for installation?

Installation typically takes 1-2 hours and requires basic hand tools: socket set (usually 15mm-19mm), fan clutch wrench set, and safety equipment. You'll need to drain some coolant and may need to remove the upper radiator hose for clearance. The most challenging part is usually breaking loose the fan clutch nut, which has reverse threads (right to loosen). Having a helper hold the water pump pulley while you turn the clutch can make the job easier.

How do I know if I need a standard or heavy-duty fan shroud?

Standard shrouds work well for highway driving and moderate loads. Heavy-duty shrouds feature reinforced mounting points and thicker material for severe-duty applications like heavy hauling, frequent mountain driving, or high-idle operations. Check your current shroud for cracks around the mounting tabs - if you see damage there, upgrade to heavy-duty. Also consider heavy-duty if you've increased your engine's horsepower or frequently operate in temperatures above 100?F.