Peterbilt 389 Hoods & Related

Frequently Asked Questions About Peterbilt 389 Hoods & Related

What years and models are compatible with Peterbilt 389 hoods?

Peterbilt 389 hoods are specifically designed for model years 2008 and newer. While the 389 shares some similarities with the 388 model (2006-2007), direct fitment requires verification of mounting points and hardware. Always confirm your truck's VIN and model year before ordering, as minor variations exist between early and late production runs. Most aftermarket hoods will specify exact year ranges in their product descriptions.

What's the difference between fiberglass and aluminum hoods, and which should I choose?

Fiberglass hoods typically weigh 90-120 pounds and offer better customization options for paint and graphics, but may crack under extreme stress. Aluminum hoods weigh 150-200 pounds, provide superior durability and heat dissipation, but cost 40-60% more. Choose fiberglass for show trucks or lighter applications, and aluminum for heavy-duty work trucks or extreme weather conditions. Both materials require proper mounting hardware rated for their specific weight.

Can I install a new hood myself, or do I need professional help?

Hood installation requires two people minimum and typically takes 3-4 hours. You'll need basic hand tools, proper lifting equipment or hood stand, and new mounting hardware (often sold separately). Critical alignment points include the hood-to-fender gaps (should be 3/8" to 1/2" uniform) and latch mechanism adjustment. Many customers successfully DIY install, but professional installation ensures proper alignment and prevents costly paint damage from improper handling.

What hood styles are available, and do they affect performance?

Common styles include standard OEM replacement, curved glass, flat glass, and various custom options with different grille surrounds. Standard hoods maintain factory aerodynamics. Curved glass hoods can improve visibility but may increase wind resistance slightly. Aftermarket hoods with additional venting or scoops can improve engine cooling by 5-10% but may impact fuel economy. Style choice is primarily aesthetic unless you're adding functional modifications.

What additional parts do I need when replacing my hood?

Beyond the hood itself, you'll typically need: hood hinges (if over 200,000 miles), rubber hood bumpers/stops, hood latch assembly, and weather stripping kit. Budget an additional $200-400 for these components. If switching from fiberglass to aluminum or vice versa, you may need different hinges rated for the weight difference. Don't forget to order touch-up paint if you're not doing a full repaint.