Frequently Asked Questions About Peterbilt 389 Glider Fuel Tank Covers & Bras

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

Our fuel tank covers are designed to fit Peterbilt 389 glider models from 2008 onwards. However, fitment can vary based on your specific tank configuration. Most covers are made for standard 120-gallon and 150-gallon cylindrical tanks with either 24.5" or 26" diameters. Before ordering, measure your tank diameter and check if you have step tanks or smooth-sided tanks, as this affects which mounting style you'll need.

What's the difference between aluminum and stainless steel covers, and which holds up better?

Stainless steel covers offer superior corrosion resistance and maintain their shine longer with minimal maintenance, making them ideal for harsh weather conditions and road salt exposure. Aluminum covers are lighter weight (reducing fuel consumption slightly) and less expensive, but require more frequent polishing to maintain appearance. Both materials are durable, but stainless steel typically lasts 15-20 years versus 10-15 years for aluminum in commercial use.

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

Installation typically takes 45-90 minutes per tank and requires basic hand tools: socket set, drill with metal bits, center punch, and measuring tape. Most covers use existing mounting holes when possible, though some drilling may be required for certain bracket styles. The biggest challenge is ensuring proper alignment before drilling any new holes. We recommend having a helper to hold the cover in position while you mark mounting points.

Do these covers work with aftermarket fuel tank steps and how do they affect ground clearance?

Yes, most fuel tank covers are compatible with aftermarket steps, though you may need specific step-cutout versions for certain configurations. Full-wrap covers typically add 1/4" to 3/8" to your tank diameter, which rarely affects ground clearance. However, if you have low-hanging accessories or operate in areas with steep angles, measure your current clearance first. Half-wrap designs don't affect ground clearance at all.

What finish options provide the best long-term appearance with minimal maintenance?

Mirror-polished stainless steel requires the least maintenance, needing only occasional washing and light polishing every 3-4 months. Brushed finishes hide minor scratches and water spots better than mirror finishes. Chrome-plated options look exceptional when new but can peel or pit after 5-7 years in harsh conditions. For aluminum covers, clear-coated anodized finishes reduce polishing frequency but may yellow over time. Most drivers prefer brushed stainless for the best balance of appearance and maintenance.