null
Shop by Make, Model & Year
Peterbilt 375/377 Parts

Peterbilt 375/377 Parts

Universal Parts

Peterbilt 375/377 Parts

Whether you’re keeping it on the road or giving it a facelift, we’ve got the aftermarket parts to make it happen.

Personalize Your Rig with Aftermarket Customizations

This category is packed with parts designed to fit your 375 or 377 just right. From functional repairs to custom upgrades, everything here is made for serious use and long hauls. Need to replace something? We’ve got: - Exterior body panels - Headlights, mirrors, and hoods - Bumpers, fenders, and grilles Want to upgrade your ride? Check out: - Chrome accessories - Interior upholstery and dash trim - Sleeper and cab add-ons All parts are built to handle daily wear and tear. No guesswork. No cheap knock-offs. Just quality components that fit and last. Whether you're a fleet owner keeping your trucks sharp or an owner-operator customizing your cab, you’ll find what you need right here.

Frequently Asked Questions About Peterbilt 375/377 Parts

Will these parts fit my specific year Peterbilt 375 or 377?

Most aftermarket parts for Peterbilt 375 and 377 models are designed to fit trucks manufactured between 1987 and 2007. However, there are important variations between model years. Pre-2000 models often have different mounting hole patterns and electrical connections than 2000-2007 models. Always verify the specific year range listed for each part, and when in doubt, contact us with your VIN number so we can confirm compatibility before ordering.

What's the difference between chrome, stainless steel, and aluminum bumpers for my truck?

Chrome-plated steel bumpers offer the classic mirror finish but require regular polishing and can rust if the chrome chips. Stainless steel bumpers (typically 304 grade) resist corrosion better and maintain their appearance with less maintenance, though they have a slightly different shine than chrome. Aluminum bumpers are the lightest option and won't rust, but they're more prone to denting and typically come polished or powder-coated rather than chromed. For daily drivers, stainless steel offers the best balance of durability and appearance.

Do I need special tools or modifications to install these parts myself?

Most bolt-on parts like bumpers, visors, and grilles can be installed with standard hand tools. However, you'll typically need a socket set (including larger sizes like 3/4" and 7/8"), torque wrench, and possibly a drill for any custom mounting. Bumper installations usually take 2-4 hours and may require two people due to weight. Electrical components like headlights may require basic wiring knowledge. Parts requiring cutting or welding should be installed by a professional shop.

Why are some aftermarket hoods and fenders significantly cheaper than others?

Price differences usually reflect material thickness, fit quality, and manufacturing precision. Economy hoods may use thinner fiberglass (3-4mm vs 5-6mm) and require more prep work for proper fitment. Premium options typically feature better gel coat finish, reinforced mounting points, and more accurate dimensions that align properly with doors and fenders. While budget options can work, they often require additional body work and may develop stress cracks sooner than higher-quality alternatives.

How do I identify whether I need parts for a 375 or 377 model?

While these models share many parts, the key difference is in the hood design. The 375 has a sloped hood, while the 377 features a more traditional flat-top hood configuration. This affects hood selection, grille mounting, and some trim pieces. Your VIN's 5th and 6th digits will confirm your exact model. Additionally, check your door jamb sticker for the model designation. When ordering hood-related parts, this distinction is critical for proper fitment.

Introducing the Official 4 State Trucks Mobile App – Gear Up On the Go!