Frequently Asked Questions About Peterbilt 587 CAC Clamps, Boots & Hoses

What are the signs that my CAC boots need replacement on my Peterbilt 587?

Look for visible cracks, tears, or bulging in the boot material. Common symptoms of failing CAC boots include loss of boost pressure, increased turbo lag, poor fuel economy, and a noticeable whistling sound under acceleration. Black soot marks around the boot connections also indicate air leaks. We recommend inspecting your CAC boots every 100,000 miles or during routine maintenance.

Will these CAC components fit all Peterbilt 587 model years?

Most CAC clamps, boots, and hoses are compatible with Peterbilt 587 models from 2011-2017. However, there are variations based on engine type (Cummins ISX15, Paccar MX-13) and whether you have a standard or high-flow charge air cooler system. Always verify your specific engine model and VIN before ordering, as some 2016-2017 models may have updated specifications requiring different part numbers.

What's the difference between silicone and rubber CAC boots, and which should I choose?

Silicone boots typically last 3-4 times longer than standard rubber boots and can withstand temperatures up to 500?F compared to rubber's 250?F limit. Silicone boots resist oil contamination better and maintain flexibility in extreme cold. While silicone costs more upfront, most drivers report fewer replacements and better boost retention. Rubber boots are adequate for standard applications but require more frequent replacement, especially in severe duty cycles.

Do I need special tools to install CAC clamps and boots myself?

Basic installation requires standard hand tools including various socket sizes (typically 8mm-13mm), flat and Phillips screwdrivers, and pliers. A torque wrench is recommended for proper clamp tightness (typically 75-90 inch-pounds for T-bolt clamps). Some tight spaces may require angled ratchets or swivel sockets. The job typically takes 1-2 hours depending on accessibility. Always allow the engine to cool completely before starting work.

How do I know what size CAC hose or clamp I need for my truck?

Measure the outside diameter of your existing CAC pipes where the boot connects. Common sizes for Peterbilt 587 include 3-inch, 3.5-inch, and 4-inch connections. Clamp sizes should be approximately 0.25 inches larger than the boot diameter for proper compression. If replacing multiple components, photograph your current setup before removal. OEM part numbers are typically stamped on original boots and can help ensure exact fitment.