Peterbilt 330/335/337 Cab, Sleeper & Cowl Panels

Frequently Asked Questions About Peterbilt 330/335/337 Cab, Sleeper & Cowl Panels

What year models are these cab panels compatible with?

These cab, sleeper, and cowl panels are designed specifically for Peterbilt 330, 335, and 337 models from 2005 to 2015. While the mounting points remained consistent across these years, always verify your specific OEM and model year before ordering, as minor variations can exist between early and late production runs within the same year.

Are these panels made from the same gauge steel as OEM parts?

Most aftermarket panels for these models are manufactured from 18-gauge steel, which matches OEM specifications. However, some economy options use 20-gauge steel. We recommend confirming the gauge before purchase, as thinner materials can be more prone to vibration and require additional reinforcement during installation. Premium panels often feature e-coating or powder coating for enhanced rust protection.

Do I need to drill new holes or modify my truck for installation?

Quality replacement panels are designed as direct-fit parts using existing mounting points and hardware locations. However, some trimming or minor adjustments may be needed depending on your truck's condition and any previous repairs. Common areas requiring attention include the door hinge alignment and cowl-to-hood gaps. Professional installation typically takes 4-6 hours per panel.

What's the difference between primed and painted finish options?

Primed panels come with a gray primer coating ready for paint matching to your truck's color. These require professional painting before installation. Pre-painted panels are available in standard Peterbilt colors but may need blending at the edges for perfect color match. Raw steel panels are also available for custom applications but require immediate primer application to prevent rust.

Will aftermarket panels affect my truck's resale value or warranty?

High-quality aftermarket panels that match OEM specifications typically maintain resale value when properly installed and painted. For trucks still under warranty, replacement panels themselves won't void the warranty, but improper installation might affect coverage for related components. We recommend keeping all documentation and using certified installation shops for warranty-sensitive vehicles.