Frequently Asked Questions About Peterbilt 375/377 Cab, Sleeper & Cowl Panels

What years and models are these cab panels compatible with?

These cab panels are specifically designed for Peterbilt 375 and 377 models manufactured between 1987 and 2001. While the 375 and 377 share many body components, always verify your exact model year before ordering, as minor mounting point variations exist between early (1987-1994) and late (1995-2001) production models. Check your VIN or contact us with your truck's serial number for guaranteed fitment verification.

Are these panels made from OEM-quality materials or aftermarket alternatives?

We offer both OEM replacement panels and high-quality aftermarket options. OEM panels are constructed from the original 18-gauge steel specifications with factory-grade primer coating. Our aftermarket panels use 16-gauge steel for added durability and feature an e-coat primer system that provides superior rust protection. Both options include proper drain holes and reinforcement ribs matching factory specifications.

What tools and skills are required for installation?

Installation typically requires basic welding equipment (MIG welder recommended), cutting tools (plasma cutter or cutoff wheel), standard hand tools, and body panel clamps. Most installations take 4-8 hours per panel depending on rust damage extent. While experienced DIY mechanics can handle the job, professional installation is recommended for sleeper panels due to precise alignment requirements. Always test-fit panels before final welding and ensure proper gap spacing of 3/16 inch between panels.

Do these panels come primed or painted, and what prep work is needed?

All panels arrive with a gray primer coat that requires scuffing before painting. The primer is not a finish coat and must be painted within 30 days to prevent oxidation. For best results, sand with 320-grit paper, clean with wax and grease remover, apply a high-build primer if needed, then finish with your choice of paint system. Panels are not available pre-painted due to the wide variety of fleet colors and custom schemes.

What is the typical lead time and shipping process for these panels?

Standard cab and cowl panels typically ship within 2-3 business days from our warehouse. Sleeper panels and less common configurations may require 7-10 business days as they ship directly from the manufacturer. All panels are carefully crated to prevent shipping damage and ship via freight carrier due to their size. Residential delivery is available for an additional fee, but commercial addresses with loading docks or forklifts receive discounted shipping rates.