Frequently Asked Questions About Peterbilt 357/378 Bumper Trim

Will this bumper trim fit my specific year Peterbilt 357 or 378?

Our Peterbilt 357/378 bumper trim is designed to fit models from 1987 through 2007. However, there are some variations between early and late models. Pre-1995 models may require minor modifications to mounting holes. We recommend checking your existing bumper measurements or contacting our support team with your VIN for exact fitment confirmation. Most trim pieces are universal between the 357 and 378 models since they share the same bumper design.

What material options are available and which holds up best?

We offer bumper trim in three main materials: 304 stainless steel, chrome-plated steel, and ABS plastic with chrome finish. Stainless steel provides the best long-term durability and resistance to rust, especially in harsh weather conditions. Chrome-plated steel offers a brilliant mirror finish but requires more maintenance to prevent pitting. ABS plastic trim is the most budget-friendly option and works well for show trucks or mild climates, but may fade or crack after 3-5 years of heavy use.

Can I install the bumper trim myself or do I need professional help?

Most customers successfully install bumper trim themselves with basic hand tools. You'll need a drill with metal bits, rivet gun or bolt hardware, measuring tape, and masking tape for alignment. Installation typically takes 2-3 hours. The main challenges include ensuring proper alignment before drilling and dealing with existing holes that may not match. We provide detailed instructions with each purchase, and many pieces use existing factory mounting points to minimize drilling.

What's the difference between OEM style and aftermarket custom trim?

OEM style trim replicates the original factory appearance with standard widths (typically 3-4 inches) and follows the original mounting pattern. Custom aftermarket trim offers wider profiles (up to 7 inches), additional accent grooves, and options like LED light cutouts. OEM style is ideal for restoration projects or maintaining original appearance, while custom trim allows for personalization and often provides better coverage of weathered bumpers.

How do I maintain chrome bumper trim to prevent rust and pitting?

Regular maintenance is crucial for chrome trim longevity. Wash with mild soap and water every 2-3 weeks, avoiding harsh chemicals or abrasive cleaners. Apply a quality chrome polish monthly and use a protective wax or sealant every 3 months. For trucks in salt-heavy regions, increase washing frequency and consider applying a clear protective film. Small pits or surface rust can often be addressed with fine steel wool and polish, but deep pitting requires professional rechroming or replacement.