Shop for Complete Charge Air Cooler Refresh Kits
If your Peterbilt 367 isnât holding boost or feels sluggish under load, start with the CAC system. CAC clamps, boots, and hoses carry cooled, pressurized air from the turbo to the engine. When they seal tight, your truck makes power efficiently. When they leak, performance and fuel economy drop fast.
A failing CAC boot or loose clamp bleeds boost. You feel it on hills and during acceleration. The engine burns more fuel to compensate, which creates excess soot. That soot loads the DPF quicker and increases the risk of a derate. For a working 367, that downtime costs money.
Oil contamination is a common problem. Turbo oil mist slowly breaks down silicone boots. They soften. They swell. Then they rupture under pressure. Replacing oil-soaked boots early helps prevent blown hoses and roadside breakdowns.
Clamps are just as important as the boots and hoses. Weak or stretched clamps let hoses shift under boost. That causes leaks and can pull dirty air into the intake. Unfiltered air carries grit, and grit inside the engine leads to permanent damage. Heavy-duty CAC clamps keep connections tight and protect the engine.
Signs You Need a Replacement
You may hear a hiss or whistle when boosting.
You may see oil residue or black smoke under throttle.
You may notice lower boost readings on the dash.
Replacing CAC clamps, boots, and hoses is a smart preventative repair. A short shop install beats sitting on the shoulder waiting for a tow.
