gas tank straps

When it comes to truck maintenance, the spotlight usually lands on the big stuff—engines, brakes, and tires. But the smaller parts doing the quiet work often keep everything running smoothly. Two of those underrated components are heater supply lines and gas tank straps.

They may not look like much, but you're suddenly dealing with real problems if either fails. Whether you're managing a fleet or keeping your own rig in shape, here's what you need to know about keeping these parts in check.

The Role of Heater Lines

These lines circulate warm coolant from the engine into the heater core, keeping your cab warm and your engine from overheating. If a line cracks or starts to leak, the effects can show up fast, from lukewarm cabin temperatures to a serious drop in coolant pressure.

Age, road grime, and heat damage to the coolant lines. Rubber ones can weaken and swell over time, while metal tubing can corrode without proper care. During regular inspections, look for signs like small cracks,