Frequently Asked Questions About Kenworth W900B/W900L Fuel Tank Covers & Bras

What's the difference between fuel tank covers and bras, and which one should I choose?

Fuel tank covers are full wraps that completely encase your fuel tanks, typically made from heavy-duty vinyl or leather with foam backing for maximum protection. Tank bras are partial covers that protect only the front-facing portion of your tanks from road debris and rock chips. Choose covers for complete protection and a uniform appearance, or bras if you want targeted protection while still showing off chrome or polished tanks. Bras are also easier to remove for tank inspections and typically cost less.

Will these fit my specific Kenworth W900B or W900L model year?

Most fuel tank covers and bras are designed to fit standard 100-150 gallon round or D-shaped tanks commonly found on W900B models (1987-2002) and W900L models (1987-present). However, tank strap placement can vary between model years and custom configurations. Before ordering, measure your tank diameter and note the strap positions. Extended hood W900L models may require longer covers due to different tank placement. Contact us with your truck's year and tank specifications if you're unsure about fitment.

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

Installation typically takes 30-45 minutes per tank and requires no special tools. Most covers use heavy-duty Velcro straps, buckles, or snap fasteners that wrap around existing tank straps. You'll need to clean the tank surface thoroughly before installation. Some drivers find it helpful to have a second person assist with alignment, especially on larger tanks. The most common challenge is getting proper tension to prevent flapping at highway speeds - start with the top straps and work your way down, ensuring the material is taut but not overstretched.

What materials hold up best against weather and road conditions?

Marine-grade vinyl with UV inhibitors typically lasts 3-5 years with proper care, resisting fading, cracking, and water damage. Genuine leather options look premium but require regular conditioning to prevent drying and cracking, especially in extreme climates. Look for covers with reinforced stitching using UV-resistant thread and rust-proof hardware. The backing material is equally important - closed-cell foam prevents water absorption and maintains shape better than open-cell alternatives. Avoid thin vinyl options under 18 oz. as they tend to tear at stress points.

Do these covers affect fuel temperature or cause any moisture issues?

Quality fuel tank covers with proper ventilation actually help regulate fuel temperature by providing insulation from direct sunlight and cold air. However, poor-fitting covers can trap moisture against the tank surface, potentially causing corrosion. Look for covers with breathable backing material or built-in ventilation channels. Remove and inspect covers every few months, especially if you operate in humid climates. During winter months, check that ice isn't forming between the cover and tank, which can damage both the cover and tank finish.