Peterbilt 359 Exterior Parts

Frequently Asked Questions About Peterbilt 359 Exterior Parts

What years do your Peterbilt 359 exterior parts fit, and are they compatible with 379 models?

Our Peterbilt 359 exterior parts are designed to fit all 359 models manufactured from 1967 to 1987. While the 359 and 379 share some similarities, they have distinct differences in hood length, grille design, and headlight configuration. Most bumpers and some accessories can interchange between late-model 359s (1980-1987) and early 379s (1987-1990), but items like hoods, grilles, and headlight panels are model-specific. We recommend checking the specific product description or contacting our team with your truck's OEM for exact fitment confirmation.

Are your bumpers made from genuine chrome-plated steel or chrome-wrapped plastic?

We carry both options to meet different needs and budgets. Our premium bumpers feature 16-gauge or 14-gauge steel construction with triple-chrome plating that includes copper, nickel, and chrome layers for maximum durability and shine. We also offer chrome-wrapped ABS plastic bumpers as a lighter, more affordable option. Each product listing clearly states the material type and gauge. Steel bumpers typically weigh 45-65 pounds and provide superior impact protection, while ABS options weigh 15-25 pounds and work well for show trucks or light-duty applications.

What additional parts or modifications are needed to install a new bumper on my 359?

Most replacement bumpers bolt directly to existing mounting brackets using the factory holes. However, you may need new mounting bolts (typically Grade 8, 1/2-inch diameter), rubber isolators, and possibly new brackets if yours are damaged or rusted. For custom or aftermarket bumpers, you might need to drill new mounting holes or purchase specific adapter brackets. Installation typically takes 2-3 hours with basic hand tools. We recommend having a second person help due to the weight of steel bumpers. Always check if your state requires specific bumper height measurements for legal compliance.

What's the difference between OEM-style and custom exterior parts for the 359?

OEM-style parts replicate the original factory specifications, including exact dimensions, mounting points, and appearance. These are ideal for restorations or maintaining stock appearance. Custom parts offer enhanced features like built-in light bars, additional chrome accents, different radius designs, or modified dimensions for lowered trucks. Custom options include Texas-style square bumpers, curved classic designs, and aerodynamic styles. Both types fit the same mounting points, but custom parts may require additional wiring for integrated lights or slight modifications for perfect fitment.

How do I maintain chrome exterior parts to prevent rust and pitting?

Chrome parts require regular maintenance to maintain their appearance, especially in harsh weather conditions or areas using road salt. Wash chrome parts weekly with mild soap and water, avoiding abrasive cleaners. Apply a quality chrome polish monthly and use a chrome sealant or wax every 3-4 months for added protection. For winter storage or severe conditions, consider applying a thin coat of WD-40 or similar protectant. Address any chips or scratches immediately with touch-up chrome paint to prevent rust from spreading underneath. With proper care, quality chrome bumpers can maintain their appearance for 10-15 years or more.