Everything to Know When Buying Commercial Truck Parts

11 Aug.,2025

 

Everything to Know When Buying Commercial Truck Parts

If your commercial truck begins to show signs of poor performance, it could be time to invest in a replacement part. Regular maintenance and repairs are crucial for trucks to maintain efficiency. But selecting the right replacement part can be challenging if you’ve never had to before or don’t know what part needs to be replaced.

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Learn how to buy heavy-duty truck parts for replacements, from whether you should choose new or used options to common myths about truck parts.

How to Choose the Right Part for Your Truck

Most commercial trucks will need a replacement part at some point. Whether because of excess usage, regular wear, or an accident, you often need to find a new part to continue driving. You can find a wide range of both heavy-duty truck parts and commercial truck parts. But if you’ve never selected replacement parts, you might be unsure of where to start.

Choosing the right replacement component depends on your truck’s features and your budget. Here are some factors to consider when you buy commercial truck parts:

  • Compatibility: The most important factor in your search for a new piece is compatibility. There are many manufacturers available all across the globe, and they all produce different part types. To get started with your search, research your truck’s manufacturing specifics. You can look up what other part types or brands are compatible with your truck. When in doubt, you can always ask your supplier or parts provider for assistance.
  • Research: It’s also a good idea to research various part types and brands. You can find out which nearby vendors supply high-quality parts and what options would suit your vehicle the best. Research is especially helpful when your truck breaks down or stops functioning correctly. You can learn whether the breakdown was caused by a part malfunction or a larger system failure. A mechanic or vehicle technician could help you find the root of the problem and the best heavy-duty truck parts for the solution.
  • Required maintenance: As you browse available parts, be sure to research the level of maintenance required. You want the parts to last as long as possible, so it’s crucial to understand the necessary maintenance they need to perform correctly. If the parts need significant maintenance, consider whether you can provide it.
  • New or used: Lastly, you can choose between new or used parts for your truck. Both options have pros and cons, so consider your needs and the state of your vehicle.

Commercial Truck Parts

Knowing which parts are the most important and what they do will make your search much easier. There are only a few differences between commercial trucks and semi-trucks in terms of the parts they use. There are many different parts for commercial trucks that you can choose from:

  • Engine: The engine is the heart of every vehicle. Being such an important part, you need to know exactly what to look for when getting a new one. Your engine needs to suit the needs of your truck. For example, a truck used for long-haul transportation will need a stronger engine than a truck that does local deliveries. The performance and power of your engine are determined by its torque, fuel efficiency, horsepower, and emissions. Make sure these factors will meet your needs.
  • Chassis: The framework supporting your truck’s components is called the chassis. Your chassis needs to be strong enough to haul your desired payload capacity. You need to pay attention to the weight distribution, frame material, overall strength, and suspension system of a chassis. These four attributes will help you make the right choice.
  • Transmission: A truck’s transmission moves the power from the engine to the wheels. Your transmission can be manual or automatic. You need to consider the power your transmission gives you as well as the ease of shifting, number of gears, and fuel efficiency. When you drive all day, these factors can make a really big difference.
  • Cargo area: You need to consider your cargo area when transporting goods. Take the loading capacity, dimensions, and accessibility into account to find the best option for you. Consider the features of your cargo area, like side doors, lift gates, and tie-down points.
  • Tires: Tires play a crucial role in the safety and performance of your truck. The tires you choose need to be well-suited for their intended use. Load rating, durability, and traction are the three main things to focus on when looking for the right tires. Depending on your route and the time of year you are driving in, you might need specialized tires like all-terrain and winter tires. If you need specialized tires, then the tread depth is another important aspect of a tire you must look into.
  • Braking system: Your truck’s braking system needs to be efficient and reliable. Anti-lock braking systems (ABS) and electronic stability control (ESC) are vital safety features. The key attributes to look for in a braking system are stopping power, responsiveness, and maintenance requirements.
  • Cab: Safety and comfort should be the biggest priorities when looking for a new cab. Being the driver’s compartment, a spacious and ergonomic design would be the best. It should have easy-to-reach controls, good visibility, and adjustable seats at the very least. Other useful features include air conditioning, storage space, and an audio system.
  • Safety features: The essential safety features your truck must have are seat belts, airbags, lane departure warnings, blind-spot monitoring, and collision mitigation systems. The more additional safety options you have, the better. These add-ons should improve your truck’s driver and road safety.

The Difference Between New and Used Truck Parts

When buying commercial parts for your truck, one of the biggest considerations is deciding between new and used options. Both are strong choices for your truck, each with its pros and cons.

Here are some of their key differences:

  • Selection: You’re sure to find a wide selection of both new and used truck parts. However, used parts often have a larger selection of replaceable parts. Most auto shops carry many types of used parts, ready for immediate purchase. You can find used parts for a wide range of truck models and needs.
  • Cost: One of the most notable differences is the price. Used parts are typically less expensive than new ones, making them a great option for those on a budget. The part’s quality is usually the decisive factor.
  • Warranty: The vendor usually includes extended warranty coverage when you buy new truck parts. If the new part breaks, you may receive a new one at no extra cost. Used parts don’t always include warranties. If they do, there could be limited warranties that only offer replacements within a certain time limit.
  • Life span: New parts usually last longer than used ones because you’re getting them at the beginning of their life span.

Overall, the choice between new and used truck parts typically depends on your preferences and budget. A parts provider can guide you toward the right choice if you’re unsure.

Common Myths About Truck Parts

You might run into a few misconceptions during your search for truck parts. It’s important to differentiate between myths and the truth so you can make the best financial and practical decision.

These are some common myths to avoid:

  • It’s easy to select parts on your own: It’s tempting to try to find a replacement part entirely on your own, but everyone can benefit from extra advice. When you work with a supplier or trusted technician, you can ensure you’ll pick the right part and prevent further complications. Technicians can offer advice about manufacturer options and help you find compatible selections for your truck.
  • The more expensive, the better: Many people think an expensive part will always be the better option, but this isn’t always true. A higher cost can indicate higher quality, but if the part isn’t compatible or durable enough, the cost doesn’t make a difference. In the same way, some drivers choose the cheapest option so they can get back on the road quicker. However, opting for the lowest quality option could force you to replace the part again in just months. Overall, quality and compatibility are key considerations.
  • All parts are the same: It’s important to remember that no parts are the same. You might encounter two parts that have physical similarities but could have subtle differences in quality and compatibility. For instance, two parts with similar appearances might be separately intended for a pickup truck and a commercial truck. If you were seeking a part for your commercial truck and accidentally bought the one for a pickup, it wouldn’t be compatible. Many truck operators seek custom-made parts to avoid these issues.

Shop for Truck Parts With Thompson Truck Source

Finding the right replacement part is crucial for your truck’s performance. If you’re looking for commercial truck parts in Alabama or northwest Florida, consider Thompson Truck Source today.

At Thompson Truck Source, we understand the importance of high-quality replacements. We offer premier service and products, allowing your trucks to get back on the road faster. From quick maintenance to a complete system overhaul, we can help your truck stay in its best shape.

When you choose Thompson Truck Source, you receive benefits like:

  • Dedicated customer service: We commit to our customer service, helping you through the entire replacement process. We can help you diagnose your truck’s issue and recommend the best replacement parts, answering every question along the way.
  • Wide selection of parts: From air conditioners to filters, Thompson Truck Source carries a wide range of replacement parts. Our high-quality parts come from leading manufacturers and can help you reduce costs and increase efficiency.
  • Expert technicians: Our team consists of expert technicians with many years of experience in the field. Their knowledge can help you make the best decision for your truck’s replacement part.

Commercial Truck Buying Guide | Campbell Supply

Commercial trucks allow drivers to haul various kinds of cargo on long routes. Buying a new truck to support your endeavors is an investment in your business’s growth and can help lower operational costs — as long as you determine you are taking on a viable investment.

Understanding the types of commercial trucks available and which key factors impact performance and reliability will empower you to make the right decision. Follow our commercial truck buying tips and ensure you choose the right semi truck for your operations.

How to Choose a Commercial Truck

Whether you are starting a business or have ample experience as an owner-operator of a trucking business, each vehicle purchase requires careful planning and analysis. Start by determining what you need from a new truck and whether a new or used vehicle will best support your business needs.

Determining Your Requirements

There are several factors to consider when buying a commercial truck. This analysis will help guide your purchasing decision, ensuring you find a vehicle that meets your business and industry needs. 

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Start by defining your business needs. Consider the types of materials you frequently transport, the terrain and distance of your regular routes, and any special requirements for loading or unloading cargo. Additional requirements you may have include:

  • Capacity and payload: Determine the truck’s cargo capacity and payload, considering cargo volume and weight. Also, consider potential business growth and how this may affect your truck’s longevity.
  • Chassis and body configuration: Consider the truck bed or body you need for effective transportation, along with any specialized equipment or accessories you must add to the truck.
  • Technology and connectivity: Technological features like GPS, telematics systems for tracking or monitoring, and connectivity for electronic logging devices (ELDs) can streamline your operations while adding more transparency.
  • Total cost of ownership: Factors like purchase price, fuel costs, maintenance, repairs, financing and insurance contribute to the vehicle’s total cost of ownership. Use this information to find opportunities where you can maximize the truck’s value and performance while lowering costs.
  • Environmental impact: If your business prioritizes sustainability, consider the truck’s environmental impact. You can look for a more fuel-efficient engine, a sustainable electric vehicle or emission control systems that align with your organization’s environmental goals.
  • Service and support: You should opt for a truck with reliable service and support options. These include parts availability, warranty coverage, maintenance facilities, and the dealership or manufacturer’s customer support.

Exploring Optional Features

Optional features can add to a semi truck’s comfort and operational efficiency. If you want to customize your semi truck to suit your needs better, consider adding these features:

  • Low rolling resistance: Adding tires with low roll resistance reduces fuel consumption, as these tires use less energy during a turn.
  • Fairings: These metal or plastic fixtures can increase the truck’s operational efficiency by reducing drag.
  • Aluminum wheels: Take the strain off your axles when transporting heavy loads by opting for lightweight aluminum wheels.
  • Side skirts: Side skirts are protective side coverings that minimize wind resistance under the trailer, which can help increase driving speed.
  • Mud flaps: You can increase the truck’s fuel efficiency by lowering wind resistance with mud flaps.
  • Computer-controlled transmissions: Digital sensors on newer semi trucks can control transmission during driving, which increases fuel efficiency.
  • Wide tires: Wider tires can increase driver safety since they improve the truck’s road handling.

Buying a New vs. Used Semi Truck

Whether you are buying a new or used semi truck, each has its own set of advantages and disadvantages. New vehicles come with higher monthly premiums, but they have several benefits:

  • Warranty: New trucks come with increased peace of mind. You get a warranty to protect you against potential mechanical issues.
  • Customization: You can often customize new vehicles according to specs that suit your business needs.
  • Lower maintenance costs: New vehicles typically need less initial maintenance because they are not subject to wear and tear.
  • New technology: The latest vehicles come with new technology, including better safety features, fuel-efficient engines and better driver comfort.

Used trucks cost significantly less than their new counterparts. While they do not typically come with a warranty, you can expect a few other benefits:

  • Monthly payments: Used trucks have lower monthly premiums and often require a lower down payment to purchase. Financing these vehicles may also have a reduced credit score requirement.
  • Proven reliability: Used trucks from a reputable dealer will come with a track record of performance, so you can assess their reliability and past maintenance records.
  • Less depreciation: Buying a vehicle that has already moved through the bulk of its depreciation means it will steadily maintain its value over time.
  • Lower insurance costs: The insurance premiums on a used truck will be lower than on a new truck, which reduces your operating expenses.

Exploring Truck Components and Their Functions

Ensuring that the critical functions of the truck you want to buy will serve your business needs is essential. Some of the primary considerations are:

  • Horsepower: Most semi trucks have engines that produce more than 400 horsepower, so opting for a bigger engine is a good idea if you want your engine to have better longevity.
  • Tires: Select tires that can handle the terrain your truck will frequent. Ensure they have adequate grip and the right tread and that they are from a reputable brand. 
  • Axles: Axles and their placement determine the amount of cargo the semi truck can effectively transport. More axles mean better weight capacity, which may impact the truck’s price and affect the roads they travel on, making it important to stay within the limits of the Generalized Fourth Power Law.
  • Freight: The truck you select must be able to support the cargo. This information will determine the size of the truck you will buy.
  • Weather: Driving in extreme climates will require additional features, such as weatherstripping.
  • Terrain: If the truck navigates flat areas more, you can bypass any additional braking gears made for driving down mountainous inclines.
  • Fuel efficiency: Find a balance between the trucks’ storage capacity and highway mileage. Ideally, you want a semi truck that can transport cargo in the shortest time possible.
  • Resale value: As it is unlikely that you will keep the truck until the end of its life span, consider a truck that will easily adapt to carrying freight for various industries.

Here are three commercial truck components: 

Semi Trucks

Semi trucks consist of a powerful tractor unit that, when connected to a trailer, can haul freight over long distances. Their distinctive design features a coupling device that connects the tractor to the trailer. Their impressive hauling capacity and versatility play a crucial role in global supply chains.

Semi Trailers

These large trailers store the cargo and get attached to the semi truck. They typically feature axles and a hitch mechanism connecting to the tractor unit. They come in various shapes and configurations, depending on the cargo. For example, a flatbed trailer is flat and open, ideal for hauling raw materials like lumber. 

18-Wheelers

An 18-wheeler is what you get when you fit the semi truck and the semi trailer together. The new vehicle has 18 wheels, resulting in an 18-wheeler. These trucks are sometimes called tractor-trailers. 

Used Semi Truck Buying Tips

If you decide to buy a used semi truck, there are a few additional points to check before you commit to your purchase. This is why it is vital to partner with a reputable dealer who will share all of the following information with you, ensuring that you buy a good quality vehicle: 

  • Rust: If the semi truck has rust, your cargo will not be secure during transport. Pay attention to bubbles under the truck’s surface, as these are rust indicators. You should also check that the breaks have no signs of corrosion, which can affect their responsiveness.
  • Logs: Inspect the maintenance logs and hours the truck logged to understand better how well the vehicle was maintained. Look to ensure that all the tires were changed at the same time, so they have the same mileage and offer the same support.
  • Tires: Check for bent hubcaps and cracks, which can be indicators of past overloading, lowering the truck’s life span.
  • Windows and doors: Ensure that windows and doors seal properly, as loose seals lower air resistance on the road.
  • Lights: Increase driver safety and ensure compliance by checking that the lights work efficiently.
  • Engine: Ensure that there is no smoke, dirt, rust, odd noises, leaks or bad cables that can damage the engine and lead to costly repairs.
  • Oil: The truck’s oil should be clean, as contaminated oil leads to engine and parts damage. 

Prioritizing Safety and Comfort in Commercial Trucks

It is essential to ensure that your truck meets safety and compliance standards like the Occupational Safety and Health Administration’s (OSHA) Section 4(b)1, which enforces the regulation of work conditions. Consider how features like advanced braking systems, visibility enhancements and stability control can improve drivers’ safety and comfort. You can also prevent driver fatigue by installing a comfortable, ergonomic seat.

Day Cab vs. Sleeper Trucks

The choice between day cabs and sleeper trucks depends on the routes your fleet frequents. Day cabs are a good choice for short-haul and regional routes with frequent stops. Sleeper trucks feature a compartment behind the truck’s cabin with overnight accommodation for the driver, which makes this option well-suited for long-haul journeys.

Automated vs. Manual

Another comfort consideration is whether to choose automatic or manual transmission. Automatic trucks are easier to operate, with shorter training periods for drivers, less driving fatigue and more consistent shifting, which leads to better fuel efficiency. Manual transmission trucks offer drivers better control over gear selection to navigate varying loads and road conditions. A manual truck will also contribute to better fuel efficiency in these situations. These trucks also come with lower upfront costs but require more driver skills.

Maintenance and Repairs

Consider the truck’s maintenance requirements and whether the dealer you are buying from offers preventive maintenance. Additionally, you must confirm that replacement parts are readily available and that the dealer offers service support for the make and model of the truck you want to buy. This confirmation will simplify processes when you need to schedule services. Finally, determine the extent of the warranty coverage the dealer or manufacturer provides and how much of this extends to the drive terrain, engine and other components.

Environmental Considerations

Prioritizing environmental considerations when buying a commercial truck helps lower your organization’s ecological footprint and operating costs. Key factors you can consider as you peruse potential vehicles include:

  • Emissions standards: Look for vehicles that meet the current emissions standards set by the Environmental Protection Agency (EPA). Trucks with cleaner-brining engines reduce air pollution and greenhouse gas emissions.
  • Idle reduction technology: Trucks that feature idle reduction technology like auxiliary power units (APUs) or automatic engine shutdown systems lower unnecessary idling during rest periods. This conserves fuel, complies with anti-idling regulations and reduces emissions.
  • Lifecycle analysis: Choose a vehicle that uses eco-friendly materials, efficient production processes and recyclable components for a lower environmental footprint. You can also opt for these materials during any routine maintenance or repairs.
  • Regulatory compliance: Keep up to date with commercial trucks’ environmental regulations and requirements in your area. Aim to have a vehicle that adheres to emission standards and noise regulations, among other environmental mandates.

Financing Your Commercial Truck Purchase

It is essential to finance your new vehicle with a reputable company. Campbell Supply Company offers financing solutions in and around the South Brunswick area. We have professional staff who are ready to guide you through financing and offer:

  • Expert truck financing: You can look forward to specialized financing solutions for pre-owned and new semi trucks.
  • Competitive quotes: Our expert team quickly sends you a competitive quote. You can also use our finance calculator to test payment scenarios as you browse vehicles. Additionally, our streamlined application process ensures that you get prompt responses.
  • Local focus: We understand the local area and offer you tailored financing plans to match.

Take the Next Steps in Commercial Truck Buying With Campbell Supply Company

Selecting the right commercial truck is a vital decision that can impact the success of your business. It is essential to consider the type of truck and how its functions align with your operational requirements. Prioritizing reliability, efficiency and cost-effectiveness ensures regulatory compliance and an investment that yields long-term dividends. Following our semi truck buying tips, you might be ready for the next steps. 

Are you interested in learning more about Truck Brake Pad? Contact us today to secure an expert consultation!