Frequently Asked Questions About Kenworth T600 Cab, Sleeper & Cowl Panels

What years do these cab panels fit, and are there differences between model years?

Our Kenworth T600 cab, sleeper, and cowl panels are designed to fit models from 1985 through 2007. However, there are notable differences between early models (1985-1994) and later models (1995-2007), particularly in mounting hole patterns and corner radius specifications. When ordering, always verify your truck's exact year and VIN to ensure proper fitment, as some mid-year production changes occurred that may affect compatibility.

What material are these panels made from, and how thick are they?

Most aftermarket cab panels are manufactured from either 16-gauge or 18-gauge steel, depending on the specific panel location and manufacturer. OEM-style panels typically use 16-gauge steel for structural areas like cowl panels, while non-structural trim panels may use 18-gauge. Some premium options include aluminum panels for weight reduction, though these require different installation techniques and hardware.

Do I need to drill new holes, or will these panels match my existing mounting points?

Quality aftermarket panels are designed to match OEM mounting locations, but some minor drilling or hole enlargement may be necessary due to manufacturing tolerances. Side cowl panels and sleeper panels typically require the most precise fitment. We recommend test-fitting all panels before final installation and having a drill with step bits on hand for any necessary adjustments. Most installations require minimal to no drilling when using panels specifically designed for your model year.

What prep work and painting is required before installation?

All steel panels come with a primer coating but require proper preparation before painting. You'll need to clean the panels with a degreasing agent, lightly sand with 320-grit paper, apply a high-quality automotive primer, and finish with your choice of paint. For best results, use a two-stage paint system with a base coat and clear coat. Aluminum panels require special etching primer before painting. Budget approximately 4-6 hours for proper prep and paint work per panel.

Are these panels DOT compliant, and will they affect my truck's inspection status?

Replacement cab panels that maintain the original structural integrity and safety features of your truck are generally acceptable for DOT compliance. However, any modifications that alter the cab's crash protection, visibility, or structural support points may cause inspection issues. When replacing cowl panels near windshield areas or structural cab corners, ensure the panels match OEM specifications for thickness and mounting. Always consult your local DOT inspector if you have concerns about specific modifications.