Frequently Asked Questions About Peterbilt 389 Fuel Tank Covers & Bras

Will these fuel tank covers fit my specific year Peterbilt 389?

Our fuel tank covers are designed to fit Peterbilt 389 models from 2008 to present. However, tank sizes can vary (100-150 gallon options are most common), so you'll need to verify your tank dimensions before ordering. Most covers are universal within the 389 model range, but custom exhaust configurations or aftermarket modifications may affect fitment. Check the product specifications for exact measurements or contact us with your truck's year and tank size for confirmation.

What's the difference between stainless steel and chrome-plated covers?

Stainless steel covers (typically 430-grade) offer superior durability and resistance to rust, making them ideal for harsh weather conditions and heavy road salt exposure. They maintain a brushed or polished finish that's easier to maintain long-term. Chrome-plated covers provide a mirror-like finish that many drivers prefer aesthetically, but they require more frequent polishing and can show pitting or peeling after 2-3 years of heavy use. Stainless typically costs 20-30% more but offers better value for drivers logging high miles.

How difficult is the installation, and what tools do I need?

Installation typically takes 30-45 minutes per tank and requires basic hand tools: socket set, screwdrivers, and possibly a drill for certain mounting styles. Most covers use existing mounting points with bands or brackets that wrap around the tank. The main challenge is accessing tight spaces between the tank and frame rails. Some drivers report needing to slightly loosen tank straps for easier fitment. Professional installation runs $50-100 per tank if you prefer not to DIY.

Do fuel tank covers affect fuel temperature or DEF system performance?

Quality fuel tank covers should not significantly impact fuel temperature or DEF system operation. Most designs include proper ventilation gaps to prevent heat buildup. However, fully enclosed designs without adequate airflow can trap heat in extreme conditions. For trucks with DEF tanks mounted near fuel tanks, ensure the cover doesn't obstruct DEF tank ventilation or heating elements. Several drivers report no issues after years of use, but monitor your gauges after initial installation.

How do I maintain the finish and prevent rust or discoloration?

For stainless steel covers, use a stainless-specific cleaner monthly and buff with a microfiber cloth. Avoid chlorine-based cleaners which can cause pitting. Chrome covers need weekly cleaning with chrome polish during winter months to prevent salt damage. Apply a thin coat of wax or chrome sealant every 2-3 months. Remove covers annually to clean behind them and check for moisture buildup. Drivers in coastal areas should increase cleaning frequency due to salt air exposure.