Frequently Asked Questions About Peterbilt 359 Cab Repair Parts
Will these cab parts fit my specific year Peterbilt 359, and what are the differences between early and late model parts?
Peterbilt 359 trucks were manufactured from 1967 to 1987, and there are notable differences between model years. Early models (1967-1985) typically have different door handle configurations and vent window assemblies compared to late models (1986-1987). Most of our cab parts specify exact year ranges in the product description. For door shells, corner windows, and major cab components, always verify your truck's build date on the door jamb sticker before ordering. If you're unsure about compatibility, our team can help identify the correct parts with your OEM number.
Are aftermarket cab panels as durable as OEM parts, and what gauge steel should I expect?
Quality aftermarket cab panels are manufactured from 18-20 gauge steel, matching OEM specifications. The best replacement panels feature proper stamping depths, correct mounting hole locations, and factory-style reinforcement ribs. Look for parts that include rust-preventive primer coating and proper drain holes. While some budget panels may use thinner steel or have fitment issues, reputable manufacturers produce parts that meet or exceed original durability standards. We clearly indicate steel gauge and coating specifications in each product listing.
What tools and skills are needed to install cab doors, floor pans, or rocker panels?
Installing major cab components requires intermediate to advanced metalworking skills. Essential tools include a MIG welder, cutting tools (plasma cutter or cut-off wheel), body hammers, and proper measuring equipment. Door installation typically takes 4-6 hours per side and requires careful alignment of hinges and latches. Floor pan replacement involves cutting out rusted sections and welding in new panels, which can take 8-12 hours. Many owners choose professional installation for structural repairs. Always test-fit parts before final welding and use proper rust prevention treatments on all cut edges.
Do replacement doors come with glass, regulators, and hardware, or must these be purchased separately?
Most replacement door shells are sold bare, without glass, regulators, latches, or interior panels. You'll typically need to transfer these components from your original doors or purchase them separately. Complete door assemblies with all hardware are available but cost significantly more. When budgeting for door replacement, factor in additional costs for weatherstripping, door alignment shims, new hinge pins and bushings, and any damaged internal components that can't be transferred. Glass and regulators are particularly important to inspect, as 30+ year old components may break during removal.
What's the difference between standard and extended cab parts, and are they interchangeable?
Peterbilt 359 extended cab models have a 36-inch or 63-inch sleeper extension, which affects several cab components. Rear cab panels, back glass, and roof sections differ significantly between standard and extended cabs. Side panels forward of the doors are typically the same, but extended cabs use different rear quarter panels and may have additional marker light provisions. Floor pans also differ in length. These parts are not interchangeable, so you must order components specific to your cab configuration. Extended cab parts are generally less common and may require longer lead times.
