Peterbilt 367 CAC Clamps, Boots & Hoses

Frequently Asked Questions About Peterbilt 367 CAC Clamps, Boots & Hoses

What does CAC stand for and what does this part do?

CAC stands for Charge Air Cooler, also known as the intercooler. The clamps, boots, and hoses in this category connect the turbocharger to the charge air cooler and then to the intake manifold, carrying pressurized, cooled air into the engine. A solid, leak-free connection here is essential for proper boost pressure and engine performance.

How do I know if my CAC boot or hose needs to be replaced?

Common signs of a failing CAC boot or hose include a noticeable loss of engine power, black smoke, a hissing or whistling sound from the engine bay, or a boost leak code on the dash. Physically inspect the boots for cracks, soft or brittle rubber, and check clamps for looseness or corrosion, especially around the connection points at the turbo, cooler, and intake.

Will these clamps, boots, and hoses fit my Peterbilt 367 regardless of engine option?

Peterbilt 367 trucks were built with different engine options over their production run, so hose and boot diameters, lengths, and routing can vary. Always check the listed specifications, including inside diameter and length, against your truck's engine and CAC system before ordering to ensure a proper fit.

What materials are these boots and hoses made from, and does it matter?

CAC boots and hoses are typically made from silicone or reinforced rubber compounds designed to handle heat, pressure, and engine bay vibration. Silicone components generally offer better resistance to heat cycling and cracking over time compared to standard rubber, which can be a worthwhile consideration for trucks that run long hours or in extreme climates.

Can I install a new CAC clamp, boot, or hose myself, or do I need a shop?

Many drivers and fleet techs replace these components themselves since the job mainly involves loosening the old clamps, removing the damaged boot or hose, and installing the new one with fresh clamps. That said, access can be tight depending on where the component sits on the 367, so if you are not comfortable working around the turbo and charge air cooler lines, having a qualified diesel shop handle it is a safe alternative.