Peterbilt 330/335/337 Cab & Related

Frequently Asked Questions About Peterbilt 330/335/337 Cab & Related

What years and models are compatible with these cab parts?

Our Peterbilt 330, 335, and 337 cab parts are designed to fit model years 2005 through present. The 330 and 335 models share most cab components, while the 337 has some unique specifications due to its extended cab configuration. Always verify your specific OEM and model year when ordering, as Peterbilt made minor design changes in 2008 and 2014 that may affect fitment of certain components like door seals, mirrors, and interior panels.

Are these aftermarket or OEM parts, and what's the quality difference?

We carry both genuine OEM Peterbilt parts and high-quality aftermarket alternatives. OEM parts guarantee exact fit and original specifications, while our aftermarket options are manufactured to meet or exceed OEM standards at a more competitive price point. Aftermarket parts typically use the same gauge steel for body panels and comparable grade materials for trim pieces. Many customers report no noticeable difference in fit or longevity, though OEM parts may have slightly better paint adhesion on pre-painted components.

What tools and expertise are needed for installation?

Most exterior cab components like mirrors, grab handles, and trim pieces require basic hand tools and can be installed in 30-60 minutes. Door panels and seals typically need trim removal tools and 2-3 hours for proper installation. Major components like hoods or fenders require professional installation with proper alignment equipment. We recommend having a second person assist with larger panels to prevent damage during fitting. Electrical components like mirror heaters or marker lights may require basic wiring knowledge or professional installation to maintain warranty coverage.

Do chrome and stainless steel accessories require special maintenance?

Chrome accessories require regular cleaning with chrome-specific polish to prevent pitting and corrosion, especially in areas with road salt exposure. Stainless steel components are more durable and only need periodic cleaning with mild soap and water. Both finishes should be inspected monthly for signs of rust at mounting points. We recommend applying a thin layer of dielectric grease to mounting hardware to prevent galvanic corrosion between dissimilar metals. Painted surfaces should be waxed every 3-4 months to maintain their finish.

What's your return policy if parts don't fit my specific truck?

We accept returns on unused parts within 30 days of purchase with original packaging. Electrical components must be unopened to qualify for return. Custom-ordered or painted parts are non-returnable. We strongly recommend confirming fitment before installation, as installed parts cannot be returned. Our customer service team can verify compatibility using your OEM before ordering. Shipping costs for returns due to customer error are the buyer's responsibility, while we cover shipping for any parts that were incorrectly described or defective.