Are OEM Parts Better Than Aftermarket? Choosing the Right Option for Your Car

Choosing the right car parts is crucial, especially when balancing quality with budget constraints. In such cases, understanding the advantages and disadvantages of both OEM and aftermarket parts is essential for making cost-effective decisions.

SingSaver Team

written_by SingSaver Team

updated: Apr 10, 2025

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When it comes to car repairs in Singapore, making a selection between Original Equipment Manufacturer (OEM) and aftermarket parts involves more than just comparing prices; it's about considering long-term reliability and immediate availability.

This article explores the essential differences and offers a balanced view to help you decide which option might suit your needs best based on cost, compatibility, and quality.

Read on to understand the pros and cons of each type and how they can affect the life and performance of your vehicle.

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Understanding the distinction: OEM versus aftermarket car parts

Genuine parts, installed during the initial assembly of your vehicle, often bear the hallmark of your car's brand, like Honda or Toyota.

These parts not only ensure a seamless fit but also uphold the manufacturer's quality standards. However, once your car requires maintenance or repair, the choice between OEM and aftermarket parts comes into play.

  • OEM: OEM parts are crafted by manufacturers who provide components to car companies, ensuring they match the parts your car was originally equipped with. This provides somewhat of a guarantee that the parts will deliver an optimal fit and function as intended, maintaining the vehicle's integrity. In Singapore, these parts are typically available through genuine automotive spare parts centres and authorised stockists, ensuring quality and compatibility with specific car models.

💡 Saver-savvy tip

In the auto market, you might see retailers label OEM parts as 'genuine.' While this sounds reassuring, it's primarily a marketing term. A part is either an authentic OEM component or it's not, regardless of the 'genuine' tag. Focus on confirming it's from the original manufacturer for guaranteed compatibility.

  • Aftermarket parts: Conversely, aftermarket parts are produced by third-party companies and might not always align with the original specifications as they are designed to fit multiple vehicle makes and models. While they offer a cost-effective alternative and are widely available through various channels, such as local auto shops, online retailers, and independent workshops, their compatibility and performance can vary. These parts provide a broader range of options, potentially offering improved performance or aesthetics over OEM parts, but with the risk of fitment issues or reduced efficacy.

Assessing the trade-offs: OEM and aftermarket car parts

When evaluating the merits of OEM versus aftermarket parts, it's essential to weigh both the immediate and long-term implications for your vehicle. 

OEM parts are renowned for their reliability and seamless integration, making them a prudent choice for those seeking longevity and peace of mind. Conversely, aftermarket parts are lauded for their variety and cost-effectiveness, presenting a viable option for car owners looking to save on repairs without compromising on quality.

Consider the comparison of these two types of car parts.

 

OEM parts

Aftermarket parts

Compatibility 

✔️

Life Span

✔️

Warranty

✔️

Availability

✔️

Options

✔️

Cost

✔️

Inspection Compliance

✔️

Performance

✔️

Advantages and drawbacks of OEM car parts

OEM car parts ensure a match and optimal function within the systems of your vehicle. These parts are synonymous with high quality and reliability, particularly for crucial car components, often extending the operational lifespan of the vehicle. For Singaporean drivers, using OEM parts is also generally advisable to uphold the vehicle’s warranty, ensuring coverage continuity.

Pros:

  • Tailored fit: Each OEM part is designed by the same supplier specifically for the model of your vehicle, supporting flawless compatibility.

  • Reliability and longevity: These parts are typically more durable than their aftermarket counterparts due to manufacturing standards.

  • Warranty protection: OEM parts tend to come with manufacturer warranties, providing an extra layer of security for consumers. However, do note that using OEM parts might also affect your car's warranty, depending on the manufacturer’s policies.

Cons:

  • Higher costs: The superior quality of OEM parts is reflected in their price, which can be significantly higher than aftermarket parts.

  • Limited variety: There tends to be less flexibility in customising or upgrading.

  • Availability issues: Depending on the part, there may be longer waiting times due to limited stock levels, especially in Singapore, where parts may need to be imported.

Advantages and drawbacks of aftermarket parts

For car owners in Singapore looking to manage repair costs effectively, aftermarket parts provide a cost-efficient alternative. These components are widely available through various local and online stores, offering an array of choices for customisation and enhancement.

Pros:

  • Cost-Effectiveness: Aftermarket parts are generally more affordable, making them an attractive option for budget-conscious drivers.

  • Variety of Options: With a broader range of manufacturers, aftermarket parts allow for greater customisation and upgrades.

  • Easy Access: Availability is high, with numerous outlets stocking parts, which reduces wait times significantly.

Cons:

  • Variable Quality: The quality of aftermarket car parts varies significantly due to variations in manufacturing and materials among third-party producers, with some failing to meet the standards of OEM components.

  • Compatibility Challenges: There's a risk that these parts may not fit as seamlessly with the vehicle’s existing systems, potentially leading to additional issues.

  • Limited Warranties: Many aftermarket parts come with minimal or no warranty coverage, increasing the risk for the buyer.

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Choosing between OEM and aftermarket parts: Key considerations

Opting for aftermarket parts often reduces the cost of car repairs, presenting a budget-friendly solution. However, it's crucial for car owners to consult their insurance providers as some policies might only cover OEM parts, thereby influencing the decision-making process.

If any of these conditions are of utmost importance, you should find a clear preference between the two options:

Warranty considerations

In Singapore, selecting the right type of car part is essential, especially when your vehicle is under warranty. Genuine or OEM parts are frequently required to maintain warranty coverage as they are guaranteed to comply with the manufacturer's standards. So, while aftermarket parts might be functional and cost-effective, they could potentially void your warranty if they fail and cause further damage.

Consideration: It's advisable to use OEM parts during the warranty period to avoid any disputes over coverage. If an aftermarket part leads to additional issues, the car manufacturer or dealer might not cover the repair costs under warranty, adding an unexpected expense.

Budget-friendly car repairs

For Singaporean drivers on a tight budget, aftermarket parts present a practical solution due to their affordability. Many local auto repair shops stock these parts, offering them at competitive prices, which can significantly lower the cost of car repairs. Therefore, opting for aftermarket parts can be a wise choice if you're looking to manage expenses without compromising on immediate vehicle needs.

Consideration: While cost-effective, it's important to assess the quality and suitability of aftermarket parts, ensuring they meet your car’s requirements without leading to further issues down the line.

>> MORE: 7 cheapest new cars under s$130,000 you can buy in Singapore

Maximising part longevity

Choosing OEM parts is advisable for those who prioritise long-term vehicle performance and fewer maintenance issues. In Singapore, these parts are known for their reliability and are recommended by many authorised service centres to maintain the vehicle’s warranty and ensure compatibility with existing systems.

Consideration: Although more expensive, OEM parts can extend the periods between necessary repairs, making them a worthwhile investment for the future of your vehicle.

Urgent vehicle repairs

When immediate car repairs are necessary, the availability of aftermarket parts can be a game changer. This is because these parts are often more readily available than OEM parts, which may require ordering and shipping. This availability can be crucial when you need a quick repair to keep your vehicle operational.

Consideration: Always verify the compatibility and quality of aftermarket parts to ensure they don’t introduce new problems to your vehicle.

Ensuring part reliability

For those who value certainty and reliability in their car repairs, OEM parts provide a sense of security that is not always available with aftermarket alternatives. Plus, the assurance of using OEM parts tends to generally come with the added benefit of warranties provided by authorised service centres, offering potential protection against potential defects.

Consideration: Although they come at a premium, OEM parts offer reliability and are backed by warranties, making them an excellent choice for ensuring your vehicle functions as intended.

Sourcing for car parts in Singapore

In Singapore, the journey to find the right car parts, whether OEM or aftermarket, involves knowing where to look.

For OEM parts, which are synonymous with quality and reliability, you can turn to platforms such as SGCarMart for listings, automotive specialists like Avantage and authorised original parts distributors like Eng Soon. These outlets guarantee authenticity and optimal compatibility with your vehicle, ensuring that the parts you purchase meet all manufacturer standards.

>> MORE: Maximising your car's trade-in value

For aftermarket parts, which are often more budget-friendly, there are numerous local retailers and online platforms like Autoparts-Online and GSPEK. These options offer a broader range of parts that may cater to specific modifications or replacements at lower costs. However, the quality and compatibility might vary, so it's crucial to purchase from reputable sources.

When faced with repair choices in Singapore, always request estimates for both OEM and aftermarket parts to make an informed decision that balances cost and quality effectively.

>> MORE: Guide to buying a second-hand used car In Singapore

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SingSaver Team

SingSaver Team

At SingSaver, we make personal finance accessible with easy to understand personal finance reads, tools and money hacks that simplify all of life’s financial decisions for you.