Frequently Asked Questions About Kenworth T800 CAC Clamps, Boots & Hoses

What year models of Kenworth T800 are these CAC components compatible with?

Our CAC clamps, boots, and hoses are designed to fit Kenworth T800 trucks from 1987 through 2024. However, specific compatibility depends on your engine type (CAT, Cummins, Detroit, or PACCAR) and whether you have a standard or extended hood configuration. We recommend checking your current CAC pipe diameter and configuration before ordering, as some mid-2000s models had variations in turbo placement that affect fitment.

How do I know if I need silicone or rubber CAC boots and hoses?

Silicone CAC boots and hoses are the preferred choice for most heavy-duty applications. They withstand temperatures up to 500?F, resist oil and coolant better than rubber, and typically last 3-5 times longer. Rubber options are more budget-friendly and work well for trucks that don't see extreme temperatures or heavy hauling. If you're running high boost pressure (over 40 PSI) or operate in extreme climates, silicone is worth the investment.

What size CAC clamps do I need, and should I use T-bolt or constant torque clamps?

Most Kenworth T800 CAC connections use 3", 3.5", or 4" clamps, depending on your specific setup. T-bolt clamps provide excellent clamping force and are ideal for high-boost applications, but they require periodic retightening. Constant torque clamps automatically adjust for thermal expansion and contraction, making them maintenance-free and preventing boost leaks. We recommend constant torque clamps for drivers who want set-it-and-forget-it reliability.

Can I install these CAC components myself, or do I need special tools?

Installation is straightforward and can typically be completed in 30-60 minutes with basic hand tools. You'll need a socket set (usually 10mm or 7/16"), flat-head screwdriver for removing old clamps, and possibly a heat gun to soften stubborn boots. The trickiest part is usually accessing the lower CAC connections near the intercooler. Having a second person help align the boots while you position the clamps makes the job much easier.

How often should CAC boots and hoses be replaced, and what are the warning signs of failure?

Quality silicone CAC boots typically last 500,000-750,000 miles, while rubber versions may need replacement every 200,000-300,000 miles. Watch for these warning signs: visible cracks or splits in the boots, oily residue around connections (indicating boost leaks), decreased fuel economy, black smoke under acceleration, or whistling sounds from the engine compartment. If you notice any ballooning or deformation of the boots under boost, replacement is urgent to prevent complete failure.