Find Silicone Boots, Hoses, and Sturdy Clamps
If your Peterbilt 567 or 579 feels weak on pulls or struggles to hold boost, the CAC system is a smart place to look. CAC clamps, boots, and hoses carry cooled, pressurized air from the turbo to the engine. When they seal tight, your engine breathes clean air and makes the power it should.
A leaking CAC boot or loose clamp dumps boost. You feel slower throttle response, soft hill climbs, and higher fuel burn just to maintain speed. That poor air balance creates extra soot, which loads the DPF faster and increases the risk of a derate. One small leak can lead to expensive downtime.
Oil contamination is a common failure point on modern trucks. Turbo oil mist slowly breaks down silicone boots. The material softens. It swells. Then it fails under load. Replacing oil-soaked boots early helps prevent blown hoses and roadside breakdowns.
Clamps matter just as much as the boots and hoses. Weak or stretched clamps allow hoses to shift under boost. That causes leaks and can pull dirty air into the intake. Unfiltered air carries grit, and grit leads to permanent engine damage. Heavy-duty CAC clamps keep connections locked down and airflow clean.
Common CAC Warning Signs
You may hear a hiss or whistle under load.
You may see oil residue on boots or black smoke during acceleration.
You may notice lower boost readings on the dash.
Replacing CAC clamps, boots, and hoses is a practical, preventative repair. A short shop install beats sitting on the shoulder with a derated engine.
This lineup of Peterbilt 567 and 579 CAC clamps, boots, and hoses are built to handle high heat and road vibrations.
