Overview
OEM and aftermarket parts each play a key role in collision repair, affecting cost, fit, availability, insurance decisions, repair timelines, and long‑term vehicle value. OEM parts offer precise fit and consistency, making them ideal for newer cars or structural and safety‑critical areas. Aftermarket parts provide affordability and faster access, working well for non‑structural repairs. Choosing between them depends on budget, repair goals, insurance policies, and part availability, with repair‑shop expertise ensuring proper fit, finish, and overall performance.
In this guide, we will explain everything you need to know about OEM and aftermarket parts to make the best choice for your car.
Getting to Know the Basics of Replacement Parts
Before you start comparing parts, it’s important to know the difference between OEM and aftermarket parts. OEM parts are made by the company that made the car or by a supplier that the company has approved. These parts are manufactured to fit the car just like it did when it was new.
On the other hand, third-party companies make aftermarket parts. You can find them in a lot of locations, and they fit a lot of different makes and models. Both types are typically used to fix cars after an accident; they can be utilized for different reasons depending on the situation.
What are OEM parts, and When do You Use Them?
When accuracy, fit, and consistency from the manufacturer are crucial, OEM parts are often the best choice. Because they are made to the same specifications as the original car, they usually fit perfectly with other parts. This can be quite critical for modern cars, cars with extensive safety features, or cars with complicated body panels.
In many circumstances, auto body technicians prefer OEM parts for places where perfect tolerances are important or for structural regions. A lot of the time, drivers question, “Are OEM parts better?” They usually give regularity and familiarity, but they might also cost more and take longer to get, depending on how available they are.
What Are Aftermarket Parts?
Parts from the aftermarket have their own set of benefits. They are frequently cheaper and easier to get, which can speed up repairs. A lot of aftermarket companies spend a lot of money on quality control to make sure their parts meet or surpass industry requirements.
A lot of people want to know if aftermarket parts are good. The answer depends on the part and the company that made it. Some aftermarket parts work really well, especially for fixes that don’t affect the structure or look of the car. Professionals consider carefully when and where to utilize them because other people may not fit or finish the same way.
Collision Repair: OEM vs. Aftermarket
When choosing between OEM and aftermarket parts, the most essential things to think about are the price, how well they fit, how easy they are to find, and the car’s long-term goals. OEM parts may retain the original look and fit, but aftermarket parts may make repairs faster and cheaper.
Insurance companies typically help figure out which parts can be used to fix a car after a crash. Policies may utilize aftermarket parts by default unless you ask for or need OEM parts. It’s important to know what your insurance covers and how to have repairs done so that everyone is on the same page from the start.
How Choosing Parts Affects Looks and Performance
Parts that need to be replaced could change more than just the price. Fit and finish are quite crucial, especially when it comes to matching paint and outside panels. A good vehicle paint company makes sure that the parts fit together well so that the colors blend evenly and the panels line up appropriately.
An auto body shop also checks how well each part fits with nearby locations, sensors, and mounting points. While both OEM and aftermarket parts can be used successfully, the skill of the repair team plays a major role in the final result.
Cost, Availability, and Repair Timelines
One of the biggest differences between OEM and aftermarket parts is price. Branding, exclusivity, and constrained supply chains make OEM parts more expensive in general. When made in bulk, aftermarket parts can save you a lot of money.
Timelines are also affected by availability. You can usually get aftermarket parts in stores or have them shipped fast, but you may have to obtain OEM parts directly from the companies that make them. For drivers who can’t wait to get back on the road, this factor can be just as crucial as price.
Choosing the Right Thing for Your Car
There is no one right answer for everyone. OEM parts may be useful for newer cars, leased autos, or cars with additional safety systems. Quality aftermarket parts may be a good choice for older cars or cosmetic repairs.
Taking the time to understand your alternatives before repairs begin can make the overall collision repair experience smoother and more predictable. Drivers may make better judgments that protect both their safety and the long-term worth of their cars when they know about the different parts available and deal with a repair staff that values honesty.
Burnside Express Collision provides professional body and collision repair services to help drivers get back on the road safely after an accident. If your vehicle has been damaged and you’re not sure what to do next, our experienced team is here to guide you through the repair process.
Serving Greenwood, Zionsville, Indianapolis, IN, and surrounding areas, we offer reliable accident and auto body repair solutions tailored to local drivers. Whether you need collision repair in Greenwood, paintless dent Repair in Zionsville, or auto body services in West Indianapolis, IN, Burnside Express Collision is ready to help restore your vehicle with care and precision.
Frequently Asked Questions
What is the difference between OEM and aftermarket parts?
OEM parts are made by the vehicle’s manufacturer or approved suppliers, ensuring exact fit, quality, and consistency. Aftermarket parts are produced by third-party companies, often designed to fit multiple models. While OEM guarantees manufacturer specifications, aftermarket parts can vary in quality, price, and fit depending on the brand.
Are aftermarket parts as good as OEM parts?
Aftermarket parts can perform well, especially for non-structural or cosmetic repairs. Quality varies by manufacturer, so some may match or even exceed OEM standards. However, OEM parts guarantee original fit and safety compliance, making them more reliable for critical areas like structural components, safety systems, or cars with advanced features.
How can I tell if a part is OEM or aftermarket on a repair estimate?
Repair estimates often indicate part type with terms like “OEM,” “Original,” or “Factory,” versus “Aftermarket,” “Non-OEM,” or brand names. You can also check the part number, supplier, or ask the shop directly. Understanding these labels ensures transparency and helps you make informed decisions about cost, quality, and warranty coverage.
Why are OEM parts more expensive than aftermarket parts?
OEM parts cost more due to brand exclusivity, manufacturer quality standards, and controlled supply chains. They are designed for perfect fit, durability, and compliance with safety specifications. Aftermarket parts are often mass-produced for multiple vehicles, which reduces cost, but fit, finish, and long-term performance may not always match OEM standards.
Do insurance companies prefer OEM or aftermarket parts?
Insurance policies often favor aftermarket parts because they are cheaper and easier to source, reducing repair costs and timelines. OEM parts may be approved if requested, especially for newer vehicles, leased cars, or safety-critical repairs. Policy terms vary, so confirming coverage and requesting OEM if needed is essential before repairs begin.
Which is better for cosmetic repairs: OEM or aftermarket parts?
Aftermarket parts are usually sufficient for cosmetic repairs like bumpers, mirrors, or panels, as they are cheaper and more readily available. OEM parts provide perfect color match, fit, and finish, but may not be necessary for minor scratches or dents. The repair quality often depends more on the shop’s skill than the part brand.
Which parts should always be OEM and which can be aftermarket?
Safety-critical and structural parts, like airbags, frame components, suspension, or complex electronics, should always be OEM for guaranteed fit and compliance. Non-structural parts, cosmetic panels, mirrors, and minor trims can usually be replaced with quality aftermarket parts, balancing cost savings with repair speed without compromising safety or performance.