Peterbilt 379 Roof Trim
Frequently Asked Questions About Peterbilt 379 Roof Trim
Will this roof trim fit my specific year Peterbilt 379, and what about extended hood models?
Most aftermarket roof trim for Peterbilt 379 trucks fits models from 1987-2007, including both standard and extended hood versions. However, there can be slight variations in mounting hole locations between early models (1987-1995) and later models (1996-2007). Always verify the exact measurements and mounting points before ordering. Extended hood models typically use the same roof trim as standard models, but double-check if your truck has any custom modifications to the cab roof area.
What's the difference between stainless steel and chrome-plated roof trim, and which lasts longer?
Stainless steel roof trim (typically 304-grade) offers superior longevity and requires less maintenance, though it has a slightly duller finish compared to chrome. It won't rust, pit, or peel over time. Chrome-plated trim provides a mirror-like finish that many drivers prefer, but it requires regular polishing and can eventually show wear, especially in harsh weather conditions. In terms of durability, stainless steel typically lasts 10-15 years or more, while chrome-plated trim may need replacement after 5-8 years depending on exposure and maintenance.
Do I need to drill new holes for installation, and what tools are required?
Most quality roof trim kits are designed to use existing factory mounting holes, so drilling is rarely necessary. You'll need basic hand tools including a socket set (typically 7/16" and 1/2"), Phillips and flathead screwdrivers, and possibly a trim removal tool to safely remove old pieces without damaging paint. Some installations may require a rivet gun if your trim uses rivets instead of screws. The job typically takes 2-3 hours for someone with basic mechanical skills.
What styles and widths are available, and how do I match my existing trim?
Peterbilt 379 roof trim commonly comes in 2.5", 3", and 4" widths, with styles ranging from flat to curved profiles. Popular finishes include polished stainless, chrome, and powder-coated options. To match existing trim, measure the width of your current pieces and note whether they have a flat or curved profile. Many drivers upgrade from the standard 2.5" to wider 3" or 4" trim for a more custom appearance. LED-lit options are also available for those wanting additional marker lights.
How do I prevent water leaks after installing new roof trim?
Proper sealing is crucial to prevent water intrusion. Use a high-quality automotive silicone sealant (not standard caulk) along all mounting points and seams. Clean the mounting surface thoroughly with isopropyl alcohol before installation to ensure proper adhesion. Apply a thin, continuous bead of sealant behind the trim pieces before securing them. Many experienced installers also recommend adding a secondary bead of sealant along the top edge after installation for extra protection. Check and reseal annually as part of regular maintenance.