If you’re driving an older Ford F150 and noticing power steering fluid leaks or a loose cap, this replacement reservoir cap is a simple but crucial fix. It’s designed specifically for a wide range of Ford F150 models and engines: the 6.6L and 7.5L engines from 1978–1979, the 4.9L, 5.0L, and 5.8L engines from 1978–1996, and the 3.8L engine from 1986–1994. So, if you’ve got one of those classic trucks, chances are this cap will fit. It replaces OEM part numbers 39588XH and 82582. The cap has a diameter of 2.709 inches, so it’ll seal securely on your existing power steering reservoir. A proper cap is important—it keeps dirt and moisture out of your power steering system and helps maintain the correct pressure, preventing fluid from sloshing out or air from getting in. This one is built to meet industry quality standards, so you get reliable performance and a tight seal. Installation couldn’t be easier: just remove the old cap (if it’s still there) and screw this one on. No tools needed. It’s a small part, but it can save you from bigger power steering issues down the road. Keep your F150’s steering system clean and functioning well with this direct-fit reservoir cap.
