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Truck Components

Keeping a semi truck in top condition starts with understanding its many moving parts. Semi truck components include engines, braking systems, suspension setups, fuel systems, electrical networks, and transmissions, each working together to keep your rig running strong. These critical truck parts handle everything from pulling heavy loads to protecting cargo during long hauls.

 

Knowing how each semi truck part functions is vital for preventive maintenance and roadside troubleshooting. Whether you drive a semi daily or manage a fleet, investing time in understanding your vehicle’s core components helps extend service life and boosts performance across every mile.

 

By focusing on maintenance and using quality parts, drivers can lower repair costs, improve fuel efficiency, and keep their trailer and truck road-ready.

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  • Hex Nipple

    Buyers Products

    Hex Nipple

    The Hex Nipple pipe fitting from Buyers Products is used to join two pieces of pipe. It features tough carbon steel construction, dryseal pipe threads for a tight, secure connection, and a corrosion-resistant zinc finish. Fitting conforms to SAE...

    $15.90
  • Lift Axle Control Assembly Lift Axle Control Assembly

    Buyers Products

    Lift Axle Control Assembly

    Buyers Products Lift Axle Control Assembly with Push-Pull Air Valve provides in-cab controls for air suspension and lift axle. Each unit comes pre-plumbed and assembled and includes fittings/DOT tubing and a mounting plate. The steel mounting plate is...

    $213.64
  • 4" Standard Sliding Trailer Winch

    Buyers Products

    4" Standard Sliding Trailer Winch

    Buyers Products Sliding Winch is ideal for securing cargo of all sizes to flatbed trailers, rail cars, and other vehicles. Compatible with standard sliding winch tracks, it easily moves along the track and locks in once tension is applied. This provides...

    $33.99
  • 4" Welded Trailer Winch

    Buyers Products

    4" Welded Trailer Winch

    Buyers Products Weld-On Winch provides a permanent solution to your cargo securing needs. The easy-to-use manual ratchet-style winch provides quick adjustments with a winch bar or hex drive. It features high quality steel construction with a corrosion...

    $32.99
  • Aluminum Diamond Plate Tool Box (378, 379, 389 Glider)

    Chrome Shop Mafia

    Aluminum Diamond Plate Tool Box (378, 379, 389 Glider)

    * High Quality Tool Box* Made Of Aluminum* Dimensions: - 31 Inch Length - 30 Inches Width - 15 Inches Height* Diamond Plate Front And Top* Smooth Sides* New Style Step* OE Style Replacement Tool Box* Sold Individually* Warranty On Tool...

    $886.85
  • Stainless Steel Battery/Tool Box (378, 379, 388, 389)

    Chrome Shop Mafia

    Stainless Steel Battery/Tool Box (378, 379, 388, 389)

    This battery/tool box is constructed with quality 304 Stainless steel and measures 30 inches long, 30 inches wide, and 15 inches tall. The box features 2-4 inch holes with plastic inserts for battery cable routing, reinforced channels underneath and...

    $1,184.99
  • High Pressure Hose Assembly 1" NPT x 1" NPT x 8 Foot Long

    Buyers Products

    High Pressure Hose Assembly 1" NPT x 1" NPT x 8 Foot Long

    High Pressure Hose Assembly 1 Inch NPT x 1 Inch NPT x 8 Foot Long The High Pressure Hose Assembly from Buyers Products features 1 in. SAE 100R2 hose and is tested to handle high system pressures. This hose has a double layer of wire wrap specially...

    $86.90
  • Tarp Solenoid Switch

    Buyers Products

    Tarp Solenoid Switch

    Powers any reversing motor equipment. Handles up to 150A of power to your tarp system. Plastic cover keeps it protected. The Solenoid Switch from Buyers Products can be used for any application that requires reversing motion. It's ideal for electric...

    $45.85
  • Hydraulic Pump BI Rotation 1-3/4 Gear

    Buyers Products

    Hydraulic Pump BI Rotation 1-3/4 Gear

    Mounting: 2/4 bolt SAE B mount Outboard Bearing: No Shaft: 7/8-13 Spline Flow @ 1000 RPM: 18.0 Max Pressure: 2500 NPT Port Side: 1-1/4" NPT Port Rear: 1-1/4" Gear Width: 1-3/4"

    $516.98
  • Buyers Wet Line Kit Less PTO Direct Mount Pump

    Buyers Products

    Buyers Wet Line Kit Less PTO Direct Mount Pump

    50 gallon upright Aluminum reservoir (UR50A) Frame bracket kit with fasteners Reservoir isolation package 46 GPM cast iron pump/valve combination with bracket 6' internally reinforced 1-1/4" suction hose Two 1-1/4" barbed adapter fittings Two...

    $1,488.07
  • 1-1/4" Full Flow Ball Valve

    Buyers Products

    1-1/4" Full Flow Ball Valve

    1-1/4" FULL FLOW BALL VALVE Reliably controls the flow of hydraulic fluid. Not suitable for steam or potable water applications. Allows pressure up to 600 PSI. Easy to install and operate.

    $30.95
  • 1" Wing Style Male End Coupler

    Buyers Products

    1" Wing Style Male End Coupler

    1" Wing Type Quick Detach Coupler (45GPM) Male End, P/N QDWC161 Solid Brass Male End Only Weight: 1.35 lbs Quickly detaches and attaches. Durable, reliable brass and iron construction. Product Common Use: Truck and Trailer Hydraulic Systems

    $49.81
  • 50 Gallon Upright Aluminum Hydraulic Tank

    Buyers Products

    50 Gallon Upright Aluminum Hydraulic Tank

    Upright design fits conveniently behind truck cab. Quality aluminum construction for lighter weight and excellent heat dissipation. Attractive diamond-tread design on upper half. Fully baffled to keep oil cool and moving correctly. Includes...

    $655.00
  • Tarp Switch 50 AMP REV-OFF-FWD

    Buyers Products

    Tarp Switch 50 AMP REV-OFF-FWD

    TARP SWITCH 50 AMP REV-OFF-FWD Easy to use for unwinding and winding the electric tarp system on your dump body or trailer. Durable zinc-plated case features four screw terminals with silver laminated contacts. Includes aluminum plate featuring...

    $20.20
  • Hydraulic Pump 11 GPM

    Buyers Products

    Hydraulic Pump 11 GPM

    Built tough of cast iron with teflon-coated bronze thrustplates. Structural integrity supported by four internal dowels and a shaft bearing. High-pressure rated -- can take a maximum 2500 or 3000 PSI. The H21 Series Hydraulic Gear Pump with Spline...

    $424.49
24 of 54 Items

Truck Engines: Power and Performance

Our inventory features engines tailored for diverse hauling demands, from light local jobs to major freight hauls. Drivers looking for maximum power and reliability will appreciate our lineup, which covers everything from high-torque options to engines built for long-distance durability.

When it comes to aftermarket semi truck parts, we offer premium engines designed for better performance, smoother driving, and lower operating costs. Compared to basic models, our engines deliver greater efficiency, helping drivers stretch every gallon of fuel.

You can also support your engine's health with our maintenance kits. Built to improve airflow, optimize combustion, and reduce wear, these kits make a real difference in both daily driving and long-term ownership.

Braking Systems: Safety and Reliability

Our selection of brake parts includes high-performance brake pads, air brake valves, slack adjusters, and complete drum and disc brake kits. We help you address common problems like uneven wear or reduced braking power with our top-rated replacement products. Our braking solutions not only improve stopping distances but also support regulatory compliance for commercial truck parts standards.

No matter if you drive a Freightliner Cascadia or any other popular semi model, we have dedicated braking system solutions ready to ship. We encourage you to check out our customer reviews which frequently highlight how we help provide safer stops, longer part life, and peace of mind on the road.

Suspension Systems: Comfort and Stability

Handling heavy duty truck parts is about more than brute strength -- comfort and stability are just as important. Our catalog features suspension components like air springs, shocks, and control arms, built to absorb bumps and prevent cargo shifts.

Upgrading your suspension can also boost your fuel efficiency by creating less resistance on the road. For drivers tired of rough rides, our upgrade kits offer an easy, effective solution that improves both handling and overall driving experience.

With a smoother ride, drivers stay comfortable longer, and your semi truck endures less wear and tear on essential components. All of this translates to better ROI.

Other Truck Components

At Fitzgerald Truck Parts, we offer a full lineup of semi truck components designed to support every aspect of your rig's performance. Our selection includes:

  • Cooling and Air Systems: Maintain optimal engine performance with our radiators, intake manifolds, fans, and other essential parts.
  • Heating and AC: Stay comfortable year-round with our blower motors, resistors, switches, receiver driers, AC lines, and evaporator cores.
  • Body Components: Find bumpers, headlights, and body panel upgrades that restore or customize your semi truck's look.
  • Transmission and Components: From transmission oil coolers to shifter poles and reman transmissions, we provide quality parts to keep your truck shifting smoothly.
  • Wheels and Tires: Keep rolling strong with durable wheels, wheel covers, and mudflaps built for heavy duty demands.
  • Electrical System Parts: Power up with alternators, starters, wiring harnesses, sensors, and other essential components.
  • Exhaust Systems: Shop exhaust pipes, heat shields, mufflers, and full exhaust kits for maximum efficiency and durability.
  • Interior and Exterior Accessories: Customize your cab with sun visors, bug deflectors, mirrors, air brake knobs, wood and leather steering wheel replacements, and more.

Our trailer parts selection help keep your rig in peak condition. We cover everything needed to outfit your truck or trailer for maximum performance, safety, and reliability. With us, keeping your rig in top shape has never been easier -- or more affordable.

Get the Semi Truck Components You Need Today

Semi trucks are intricate machines where every part counts. From the braking system to the fuel tank, every component plays a role in safety, performance, and cost efficiency. Routine maintenance and smart part replacements prevent unexpected breakdowns and help drivers avoid costly delays.

The future of trucking promises exciting advancements like smart braking technologies, lighter materials, and predictive maintenance tools. Staying ahead of these trends means working with a supplier that understands the evolving needs of the industry.

When you're ready to upgrade or replace components, we're here with expert advice and an extensive selection of high-quality aftermarket parts designed to keep your truck running strong.

Why Buy from Fitzgerald Truck Parts

Choosing us means more than just buying truck parts -- it means partnering with a team committed to quality, service, and your success. Here's why drivers and fleets trust us:

  • Brands You Trust: We stock parts from top brands and manufacturers known for quality and reliability.
  • Competitive Pricing: Save more with our everyday deals and seasonal parts specials.
  • Expert Support: Our knowledgeable team is here to help you match the right part to your truck or trailer.
  • Fast Shipping: Get the parts you need without the long wait.
  • Extensive Inventory: Whether you need a new fuel tank, upgraded brake pads, or durable trailer parts, we've got you covered.

We make it easy to find the best gear for your heavy duty truck. Shop online, browse by category, or contact us with any questions.