Description HOOD SPRING Part Number: F1304638C Direct replacement (cross ref) for 13-04638. Product Overview This hood spring helps counterbalance the weight of the hood when opening and closing. On trucks with large, heavy hoods, that spring takes a lot of strain every time the hood is lifted. Over time, it can lose tension or break altogether. This replacement spring matches OEM part 13-04638. What the Part Does The spring assists in lifting the hood and helps hold it in position once it’s open. It reduces the effort needed to open the hood and keeps it from dropping unexpectedly. Without proper spring tension, the hood becomes harder to manage and less stable during service. Common Problems This Part Solves A worn or broken hood spring usually shows up as: Hood feels heavy when opening Hood won’t stay open properly Uneven movement when lifting Sudden dropping or shifting In colder weather, weak springs become even more noticeable. Why Replacement Matters A failing spring is a real safety issue. A heavy hood dropping unexpectedly can cause injury or damage components around it. Replacing the spring brings back controlled movement and makes service work safer and easier. Compatibility and Fitment This spring replaces OEM part 13-04638. Make sure your hood setup matches before ordering, as spring sizes and mounting points can vary. Installation and Service Notes Installation usually involves removing tension from the old spring and installing the new one in the same mounting points. Be careful, springs are under load and need to be handled properly. While replacing, check hood latches, hinges, bushings, and mounts for wear since they all work together. Use Case Common replacement during hood service or when drivers report heavy or unstable hood movement. About Us We’re a family-owned group of Peterbilt dealerships dedicated to getting you the parts you need quickly and affordably. Whether you’re looking for Paccar OEM parts, reliable aftermarket replacements, or popular upgrades like seats and filters, we make it easy to keep your truck running and on the road. If you don’t see what you need online, just give us a call or send an email — chances are we can get it. We pride ourselves on fast service, fair prices, and being a partner you can depend on when downtime isn’t an option. FAQs Q1: Can I run the truck with a bad hood spring? A: Yes, but opening the hood will be harder and less safe. It’s something you’ll want to fix sooner rather than later. Q2: Do both springs need to be replaced? A: If your setup uses two, it’s usually best to replace them together so the hood stays balanced. Q3: Is installation dangerous? A: It can be if not handled properly. Springs are under tension, so use the right tools and take your time. Q4: What else should I check while replacing it? A: Inspect hood bushings and hinges. If those are worn, a new spring alone won’t fix the issue.
