Accessories & Upgrade Services:
- Alignment diagnostics and testing using advanced computerized equipment
- Installation of exterior accessories including grille guards, bumpers, step bars, and bed accessories
- LED and HID lighting upgrades for improved visibility and modern aesthetics
- Truck bed accessories including tonneau covers, toolboxes, bed liners, and cargo systems
- Performance air intake and exhaust upgrades for improved power and sound
- Suspension upgrades including leveling kits, lift kits, and heavy-duty components
- Wheel and tire upgrades for enhanced appearance and performance
- Trailer brake controller installation and towing equipment setup
- Electrical and wiring upgrades for added accessories, lighting, and power needs
- Interior enhancements including seat covers, floor liners, and tech add-ons
- Custom accessory installation for work trucks, off-road builds, and daily drivers
Upgrade Your Vehicle With Quality Parts and Expert Installation
Whether your goal is improved capability, better performance, upgraded lighting, or simply adding personal style, By The Book Diesel & Auto Repair offers full-service installation for a wide range of automotive accessories and vehicle upgrades. Our team helps you choose the right components and ensures every part is installed correctly, safely, and according to manufacturer specifications.
We specialize in upgrades for trucks, SUVs, diesel pickups, and work vehicles — whether you're towing, hauling, off-roading, commuting, or customizing your ride.
What We Can Upgrade
- Exterior Accessories: Installing exterior add-ons does more than change the look of your vehicle — many provide real functional value. We install grille guards, bed covers, running boards, mudflaps, roof racks, tow hooks, off-road bumpers, and more. Each accessory is installed with precision so it performs exactly as intended.
- Lighting Upgrades: From LED headlights to work lights, light bars, reverse lights, or custom wiring, we ensure your lighting upgrades are bright, reliable, and properly aligned. Good lighting improves both safety and visibility, especially for work trucks and diesel vehicles driven at night.
- Performance Enhancements: If you’re looking to improve horsepower, torque, towing performance, or engine efficiency, we can install tuners, intakes, exhaust systems, EGR-safe upgrades, and other enhancements. Every upgrade is reviewed to ensure it’s safe for your vehicle and won’t cause avoidable long-term damage.
- Suspension & Handling Upgrades: We install leveling kits, lift kits, upgraded shocks, heavy-duty spring systems, sway bars, and towing suspension accessories. After any major suspension upgrade, we complete an alignment to ensure safe handling, tire life, and correct drivability.
- Wheels, Tires & Fitment: Upgrading your wheel and tire package can drastically change how your vehicle rides and performs. We help you choose proper size, clearance, load rating, and fitment so you get the right look and safe operation.
- Towing & Trailer Accessories: If you tow frequently or own a diesel truck, towing upgrades such as brake controllers, helper bags, hitches, and wiring harnesses can improve safety and performance. We install everything using proper torque specs, routing, and testing to ensure reliability.
Why Choose Us?
- Expert installation that protects vehicle safety and long-term reliability
- Honest recommendations based on what you need — not unnecessary upsells
- Access to trusted brands and high-quality parts
- Clean wiring, proper mounting, and professional calibration
- Upgrades done the right way, by the book
Customize Your Vehicle With Confidence
No matter what type of accessory or upgrade you're looking for, our team is here to help you design, select, and install the perfect setup for your vehicle. From daily drivers to diesel work trucks, we ensure every upgrade is done safely, cleanly, and reliably.
Contact us today to schedule an upgrade consultation or book your installation.



