Direct-Fit Replacement CAC Components for Peterbilt 359
If your Peterbilt 359 isnât pulling the way it used to, the CAC system is one of the first places to look. CAC clamps, boots, and hoses carry pressurized air from the turbo to the engine. When they seal tight, your engine gets the air it needs to make power. When they donât, performance drops fast.
A leaking CAC boot or hose bleeds boost. That means slower throttle response, weaker hill pulls, and higher fuel burn just to stay at speed. Over time, that poor air-to-fuel mix creates excess soot, which puts added strain on the DPF. One worn boot can lead to costly downtime.
Oil is the most common cause of failure on older trucks like the 359. Turbo oil mist slowly breaks down silicone boots. They soften. They swell. Then they split under load. Upgrading worn boots before they rupture helps prevent roadside breakdowns and unexpected derates.
Clamps play a bigger role than most drivers think. Weak or stretched clamps allow hoses to shift and leak under boost. Even worse, a loose connection can pull in unfiltered air. Road grit inside the intake can cause permanent internal engine damage. Heavy-duty CAC clamps help lock everything in place and keep the air path clean.
This selection of Peterbilt 359 CAC clamps, boots, and hoses is built for real commercial use. Designed to handle heat, vibration, and high boost, these parts restore lost power, protect the emissions system, and keep your classic 359 running strong mile after mile.
