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Peterbilt 389 Day Cab Conversion
Enjoy Extended Day Cab Customizations
At 4 State Trucks, our day cab conversion kits are built tough and designed for a clean, factory-style finish. Whether you're downsizing for vocational work or just want to ditch the sleeper for better visibility and function, weâve got you covered.Buy the Perfect Day Cab Conversion for the Peterbilt 389
- Better visibility: No sleeper means a clearer rear view, making it easier to hook up trailers and navigate tight spaces. - More weight capacity: Dropping the sleeper cuts weight, letting you haul more legally or boost fuel economy. - Easier access and storage: Our kits come with added storage solutions and allow for easier cab access. - Built to fit: Designed specifically for Peterbilt 389 models (plus 378, 379, 386, and 388)âno guesswork required. - Custom finish: Choose from flat panel or deluxe extended panel kits with color-matched interiors and clean lines. - Professional-grade look: Gives your truck a seamless, polished look that blends with the original cab design.Whether you're a fleet owner converting for local jobs or an owner-operator customizing your ride, a day cab conversion kit offers the flexibility and efficiency you need to stay ahead. You can also pair your upgrades with additional sleeper cab customizations, from Peterbilt 389 sleeper roof and window trim to
Frequently Asked Questions About Peterbilt 389 Day Cab Conversion
Will these conversion bumpers fit my specific year Peterbilt 389?
Our day cab conversion bumpers are designed to fit Peterbilt 389 models from 2008 to present. However, minor variations exist between model years, particularly in mounting hole patterns for 2008-2012 versus 2013+ models. We recommend verifying your VIN and model year when ordering, as some bumpers require year-specific mounting brackets. Pre-2008 models may require additional modification or adapter plates.
What's the difference between chrome, stainless steel, and aluminum bumper options?
Chrome-plated steel bumpers offer a mirror finish but require regular maintenance to prevent rust and pitting. Stainless steel bumpers (typically 304 grade) provide excellent corrosion resistance with less maintenance but cost 30-40% more. Aluminum bumpers are the lightest option, reducing front axle weight by 40-60 pounds compared to steel, but may show more wear from road debris. All three materials support the same weight ratings for towing and impact protection.
How difficult is the installation process, and what tools do I need?
Installation typically takes 4-6 hours for experienced mechanics and 6-10 hours for DIY installers. You'll need basic hand tools plus a 1/2" drive socket set, torque wrench (capable of 150 ft-lbs), and potentially a reciprocating saw to remove existing sleeper cab brackets. Most conversions require drilling 2-4 new mounting holes. Critical challenges include ensuring proper frame alignment and maintaining DOT-required bumper height of 16-30 inches from ground level.
Do I need to modify my exhaust or air lines when converting to a day cab bumper?
Yes, most conversions require exhaust stack relocation or trimming, as day cab bumpers sit closer to the frame. Vertical exhaust stacks often need to be shortened by 6-12 inches or converted to under-frame exhaust. Air and electrical lines running along the frame rails typically need rerouting to clear the new bumper brackets. Budget an additional $200-500 for exhaust modifications if using a muffler shop.
Will converting affect my truck's resale value or warranty?
Day cab conversions can impact resale value both positively and negatively depending on your market. Owner-operators often prefer day cabs for weight savings and maneuverability, potentially increasing value. However, long-haul buyers may view it negatively. Regarding warranty, frame modifications typically don't void engine or drivetrain warranties, but any frame-related warranty claims may be denied. We recommend documenting the conversion with photos and keeping all original parts if you plan to restore to factory configuration later.
