HOSES & CLAMPS

Hoses & Clamps For Peterbilt Trucks

Hoses and clamps are found throughout a Peterbilt's cooling, air, fuel, and hydraulic systems, and a failed hose or loose clamp can quickly escalate into an engine overheat, air pressure loss, or fluid leak that sidelines the truck. We carry coolant hoses, charge air cooler hoses, air line hoses, fuel lines, and the T-bolt, band, and worm-drive clamps needed to secure them — all sized for the connection points found on PACCAR MX and Cummins-powered Peterbilt trucks across current and prior model years.

Frequently asked questions about hoses & clamps

How often should coolant hoses be inspected and replaced on a Peterbilt?

Coolant hoses should be inspected at every PM interval — look for soft or spongy sections, hardening and cracking near the clamp ends, bulging, or surface checking in the rubber. Most manufacturers recommend replacing upper and lower radiator hoses and heater hoses at or before 500,000 miles or 5 years of service, whichever comes first. Hoses that feel soft when squeezed (indicating inner liner delamination) or that show exterior cracking should be replaced immediately regardless of mileage. A blown coolant hose on the highway can cause rapid coolant loss and engine overheat within minutes.

What type of clamp should I use on a charge air cooler hose?

Charge air cooler (CAC) hoses carry turbocharged intake air at elevated pressure and temperature, and standard worm-drive clamps are not adequate for this application. T-bolt clamps are the correct choice for CAC hoses — they provide uniform 360-degree clamping force and maintain their hold under the thermal cycling and pressure pulses these connections experience. Use the clamp size specified for the hose OD at each connection point, and torque to the specification in your service manual. A loose CAC hose connection causes boost leaks, which reduce engine power and can trigger turbo overspeed as the ECM attempts to compensate.

Can I use standard automotive hoses on a Peterbilt, or do I need heavy-duty specific hoses?

Heavy-duty truck hoses are not interchangeable with standard automotive hoses. Peterbilt coolant hoses are engineered for higher operating temperatures, larger diameters, and greater wall thickness than passenger car hoses. Charge air hoses must withstand positive boost pressure and high heat — standard silicone or EPDM automotive hoses are not rated for these conditions. Always specify hoses rated for heavy-duty diesel applications and confirm the correct inside diameter, length, and elbow angle for your specific connection before ordering.

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