HOSES & LINES

Hoses & Lines For Peterbilt Trucks

From coolant hoses and fuel lines to air brake tubing and power steering hoses, the hoses and lines on a Peterbilt keep critical fluids and compressed air moving through the systems that keep the truck running safely. Deteriorating or leaking hoses are one of the most common causes of roadside failures and fluid losses. We carry replacement hoses and lines for Peterbilt trucks across all major fluid and air system applications.

Frequently asked questions about hoses & lines

What are the signs that coolant hoses need to be replaced on my Peterbilt?

Coolant hoses should be replaced when they feel hard and brittle, soft and spongy, or when they show surface cracking, swelling, or chafing. Even hoses that look acceptable externally can be deteriorating internally -- the inner rubber layer can delaminate and restrict coolant flow or shed material that clogs the heater core or thermostat. On trucks with 300,000 or more miles, coolant hoses should be inspected carefully and replaced proactively if there's any doubt about their condition.

How do I identify the correct coolant hose for my Peterbilt?

Coolant hoses are application-specific -- diameter, length, shape, and bend angles all need to match the original. The best approach is to identify the OEM part number from the existing hose or your truck's parts documentation and use that as a cross-reference. When a specific OEM hose isn't available, a universal straight hose of the correct diameter with a separate elbow fitting can serve in many applications, though the fit won't be as clean as a molded replacement.

Are power steering hoses the same as coolant hoses on a Peterbilt?

No -- they're completely different products. Power steering hoses operate under high hydraulic pressure and must be constructed from materials compatible with power steering fluid. Coolant hoses are designed for lower pressure and the chemical environment of engine coolant. Never substitute a coolant hose in a power steering application -- the material is not rated for hydraulic pressure and will fail, often suddenly. Always match hose type to the system it will serve.

Other parts you might need

Shop hoses & hardlines for Peterbilt trucks