Peterbilt 389 Floor Acc.

Frequently Asked Questions About Peterbilt 389 Floor Accessories

Will these floor mats fit my specific year Peterbilt 389, and what about the 388 model?

Most floor accessories are designed to fit Peterbilt 389 models from 2008 to present. The 388 and 389 share the same cab dimensions, so floor mats and accessories are typically interchangeable between these models. However, always verify fitment for automatic vs. manual transmission configurations, as the floor pan shape differs slightly. Pre-2008 models (379 series) have different floor dimensions and require model-specific accessories.

What's the difference between rubber, carpet, and aluminum diamond plate floor options?

Rubber floor mats offer the best protection against moisture and mud, with raised edges to contain spills. They're ideal for drivers in wet climates or construction work. Carpet options provide a more refined look and better insulation against road noise but require more maintenance. Aluminum diamond plate is the most durable option, offering permanent protection and easy cleaning, though installation requires drilling and proper sealing to prevent moisture issues.

Do I need to remove seats or other components to install floor accessories?

For basic rubber or carpet floor mats, no removal is necessary - they're designed to work around existing pedals and seat bases. However, for best fit and to clean underneath, removing the passenger seat (4 bolts) takes about 10 minutes and ensures proper positioning. Diamond plate installations require seat removal and typically 2-3 hours of installation time, including drilling and sealing.

How do I prevent moisture and rust under rubber floor mats?

Moisture accumulation is a common concern. Choose mats with proper drainage channels and regularly remove them (weekly in wet conditions) to air dry the cab floor. Apply a rust preventive coating to the floor pan before installing new mats. Look for mats with anti-slip backing that allows some airflow rather than completely sealed rubber backing. Many drivers drill small drainage holes in the lowest points of their floor mats.

What floor accessories work best with aftermarket seats or seat suspensions?

Aftermarket air-ride seats often have different base dimensions than stock seats. Universal-fit floor mats may require trimming around seat bases for proper fit. Custom-fit options from manufacturers like Minimizer or Redline specifically account for popular aftermarket seat brands. Measure the clearance between your seat base and floor before ordering, as some thicker luxury mats may interfere with seat suspension travel.