Original or secondhand parts: quality and warranty

Choosing between original and secondhand parts can affect your fleet's performance and costs.

The main difference between these options lies in the quality and warranty each offers. Both aftermarket and secondhand parts usually cost less, but can compromise vehicle safety and efficiency.

Original parts, on the other hand, guarantee compatibility and high performance in all cases.

Although aftermarket and secondhand parts offer initial savings, choosing original parts is the ideal choice for fleet durability and reliability.

Learn more below:

• The difference between original and secondhand parts
• What aftermarket parts are
• The impact of using original parts in fleet maintenance
• How secondhand parts can affect vehicles
• Whether aftermarket parts are worth using in fleet vehicles
• How to manage truck parts use in your fleet
• How to assess the use of original or secondhand parts

What is the difference between original and secondhand parts?

Original parts are manufactured and sold by the vehicle's original manufacturer, ensuring they meet its exact specifications and quality standards.

Secondhand parts, meanwhile, can serve the same role, but they are not new and may not be manufactured or warranted by the automaker, affecting their quality and durability.

What are aftermarket parts?

Aftermarket parts are produced by manufacturers not directly linked to the vehicle's original manufacturer.

They generally serve the same function as original parts, but because they are not specific to the vehicle manufacturer, fit, size and other characteristics can differ.

This can result in lower performance, shorter durability and a greater risk of failures compared with original parts.

What is the impact of using original parts in fleet maintenance?

Using original parts in fleet maintenance ensures compatibility with vehicles, since they are specifically designed to meet the manufacturer's technical specifications.

This results in fewer failures and greater vehicle availability.

Original parts also undergo manufacturer quality testing. And although they can have a higher initial cost, they generally offer better long-term value for money.

The reliability of original parts also contributes to fleet safety, minimizing the risk of accidents caused by mechanical failures.

Another important impact is the warranty offered by the parts supplier, which generally covers manufacturing defects and possible issues during use.

How can secondhand parts affect vehicles?

Using secondhand parts can have some negative impacts on fleet operations. Because they have already been used, they can show wear and lower durability than new original parts.

The vehicle generally experiences more failures and frequent replacements when secondhand parts are used, leading to greater vehicle downtime and additional maintenance costs.

Secondhand parts may also fail to fit perfectly, which can lead to additional mechanical issues and even irreversible failures.

Another important factor is the lack of warranties. Unlike original parts, secondhand parts generally come without warranties, meaning any failure or issue becomes the fleet manager's responsibility.

Is it worth using aftermarket parts in fleet vehicles?

It is generally not worth risking aftermarket parts in fleet vehicles, even less so with secondhand parts.

The main reason is that aftermarket parts may not meet the vehicle's exact specifications, even when designed for it, because their quality and compatibility testing is not as rigorous as testing by the original manufacturer.

As a result, aftermarket parts can perform poorly and also cause issues in other vehicle parts and systems.

In addition, using parts not original to the manufacturer compromises the vehicle's general warranties in most cases. That is, the manufacturer starts to disclaim responsibility for possible manufacturing issues.

How do you manage truck parts use in your fleet?

Control inventory

Maintain accurate inventory control, including the support of specialized management systems — either maintenance or inventory systems.

This makes it easier to ensure necessary parts are always available, avoiding maintenance delays and unplanned stops. With proper control, you will always know when to make new purchases, avoiding both shortages and excess parts.

Choose your suppliers carefully

Work with reliable suppliers offering high-quality parts and appropriate warranties. One way to assess suppliers is through parts quality, meeting delivery deadlines and after-sales support.

Monitor performance

Use performance indicators, especially those related to vehicle maintenance, such as availability rate, maintenance cost to revenue (CMF) and the number of maintenance interventions by service type.

Keeping track of this information makes it possible to find patterns and adjust maintenance practices and parts selection.

Keep maintenance records and history

Record all maintenance performed, including details of replaced parts and services carried out.

This history makes it easier to trace and identify recurring issues, as well as helping with informed fleet management decisions.

Assess the value for money of the parts used

Perform periodic cost-benefit analyses to assess whether using original, aftermarket or secondhand parts is generating the best return on investment.

Consider factors such as durability, performance and total cost of ownership when deciding on parts purchases.

You can then understand whether the parts you use provide an ideal combination of quality and savings.

How do you assess the use of original or secondhand parts?

Some factors you can consider in this assessment are:

Quality and performance

Original parts are manufactured according to the vehicle manufacturer's specifications, ensuring compatibility and high performance.

Secondhand parts, on the other hand, can have previous wear and variable quality, negatively affecting vehicle performance.

When using each type of part in your fleet, observe how the vehicle performs over a period and draw your conclusions.

Initial cost versus total cost of ownership

Consider not only the parts' initial cost, but also the total cost of ownership.

Secondhand parts can be cheaper to buy, but their lower durability and reliability can result in frequent replacements and repairs, increasing long-term maintenance costs.

Although original parts cost more initially, they tend to offer greater durability and fewer issues, resulting in long-term savings.

Warranties and support

Check the warranties and support offered with the parts. Original parts generally come with manufacturer warranties. Secondhand parts rarely offer warranties, which can increase risks and costs if the part fails.
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