OEM vs Aftermarket Ignition Coil: Pros and Cons

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There is a lot of debate surrounding OEM vs. aftermarket ignition coils.OEM ignition coils are often seen as the gold standard, they’re built to the exact specifications of your car’s make and model, so you know they’re going to fit and work perfectly.

On the other hand, aftermarket ignition coils are often seen as a more cost-effective alternative. They’re not always made to precise specifications, but as long as you know your car’s make and model, an aftermarket coil can.

There are a lot of factors to consider when choosing an ignition coil for your vehicle. Some people might opt for an OEM (original equipment manufacturer) coil, while others might choose an aftermarket option. Each has its own advantages and disadvantages, so it can be tough to decide which is the best option for you. In this blog post, we’ll take a closer look at both options and help you decide which is the best choice for your vehicle.

What Is an OEM?

An OEM ignition coil is a part that sits atop the spark plugs in your engine, providing them with the high voltage required to create a spark. Faulty or damaged coils can cause all sorts of problems with your engine, including misfires, rough idling, and decreased performance. Replacing your ignition coils is therefore an important part of preventive maintenance for your vehicle.

Fit and Quality

OEM ignition coils are made to fit perfectly with your vehicle and offer quality performance. Many aftermarket ignition coils can cause issues with fitment or give an inferior performance, so it’s important to choose an OEM coil for the best possible results. Additionally, OEM ignition coils typically come with a warranty from the manufacturer, giving you peace of mind in case of any problems.

Strict Quality Control

OEM ignition coils are known for their strict quality control measures. This ensures that each and every ignition coil meets the same high standards, ensuring a perfect fit and function in your vehicle. Additionally, OEM ignition coils typically come with a warranty, so you can be sure that you’re getting a quality product.

Operate Reliable

OEM ignition coils are designed to operate reliably and produce the correct spark for your engine. They are also engineered to be compatible with the car’s computer system, ensuring optimal performance.

Peak Engine Performance

A good ignition coil should provide a strong, consistent spark that can handle peak engine performance. It should also be resistant to heat and corrosion, and be able to stand up to the rigors of daily use. When shopping for an ignition coil, be sure to consider these factors as well as the price and warranty.

What Is Aftermarket Ignition Coil?

Aftermarket ignition coils are replacement coils that you can install in your vehicle to improve its performance. These coils are designed to provide better spark than your factory coils, and they can also help increase fuel economy and horsepower. There are a number of different aftermarket coil brands available, so you can find the right one to suit your needs. If you’re looking for an aftermarket ignition coil that will give you the best performance.

Direct Replacement

A direct replacement ignition coil is an aftermarket accessory released as an upgrade or replacement to the OEM part. It offers more durability and is often a better fit than the OEM coil. taller cylinders of higher capacity engines require specific miniature towers that are not always offered in the stock market. Some marketing companies will offer “universal” replacements, but these may compromise safety by sparking at lower voltages than required or transmitting less energy than needed.

Compact Innovative Design

The ignition coil is an electrical device that transforms the battery’s low voltage into the high voltage needed to create an arc across the spark plugs. A good ignition coil should have a compact innovative design that takes up minimal space and can be easily installed. It should also produce a strong spark that will ignite the fuel-air mixture in the engine and help it run smoothly.

Superior Performance

Aftermarket ignition coils offer superior performance over factory-installed coils. The reason for this is that they are designed to deliver high voltage and spark energy while drawing low currents. This allows them to produce a stronger spark and higher ignition energy than the stock coils.

Easy Installation

Aftermarket ignition coils are designed to be easier to install than their OEM counterparts. Installation typically requires just a few removal and installation steps, and in some cases, no special tools or skills are needed beyond those required for routine maintenance tasks.

OEM Vs Aftermarket Ignition Coil

OEM Ignition Coil Provides Maximum Durability

When looking for an OEM ignition coil, it’s important to seek out one that has maximum durability. A quality ignition coil should be able to withstand the high temperatures and constant cycling that come with everyday use. Additionally, it’s important to find a coil that is designed specifically for your vehicle. This will ensure a perfect fit and optimal performance.

Aftermarket Ignition Coil Protection helps to ensure

There are a few different factors to consider when choosing the best aftermarket ignition coil for your car. One important factor is the level of protection that the coil offers. You want to make sure that the coil you select will help to ensure maximum engine performance and protection. Another factor to consider is the price. Aftermarket coils can vary widely in price, so it’s important to find one that fits within your budget.

OEM Ignition Coil Provides Performance and Drivability

The best ignition coil for OEM applications is one that provides good performance and drivability. It should be durable, withstanding the high temperatures and stresses of engine operation, and it should provide a strong spark across the full range of engine speeds. It should also be easy to install, with a plug-and-play design that does not require any modifications to the vehicle’s wiring or ignition system.

Aftermarket Ignition Coil Provides Performance and Dependability

An aftermarket ignition coil can provide the performance and dependability that is needed for high-performance engines. They are designed to deliver increased voltage and spark energy, which helps to provide more complete combustion. This results in improved acceleration, fuel economy, and power.

OEM Ignition Coil Protection Against Internal Shots

There are a few important factors to consider when choosing an ignition coil for OEM applications. One of the most important is protection against internal shorts. This can be accomplished with a variety of features, including encapsulation, potting, and/or metal film protection.

Aftermarket Ignition Coil Provides Easy Installation

There are a few things to look for when choosing an aftermarket ignition coil. The first is easy installation. You don’t want to have to hire a mechanic or spend hours in the garage trying to figure out how to install the new coil. Second, look for quality. Make sure the coil is made from high-quality materials and that it’s been tested to last. Third, price is always a factor. You don’t want to spend more than you have to, but you also don’t want to sacrifice quality for cost.

OEM Ignition Coil Providing High Electrical Resistance

There are a lot of different options out there when it comes to choosing the best ignition coil for your needs. OEM coils are typically always a good choice, as they tend to offer high electrical resistance and reliability. Other factors you’ll want to keep in mind include the type of engine you have as well as any aftermarket modifications you might have made. In general, though, sticking with an OEM coil is usually a solid decision.

Aftermarket Ignition Coil Provides High-Temperature Resistance

An aftermarket ignition coil can provide high-temperature resistance and improved performance for your vehicle. When looking for an ignition coil, it is important to find one that is made with quality materials and construction. This will ensure that your ignition coil can withstand the high temperatures and pressures associated with the combustion process.

Pros and Cons of OEM Ignition Coil


  • Reliable under extreme conditions
  • Resistant to corrosion and abrasion
  • Low emission
  • Eliminate common misfire


  • Some instances of misfire

Pros and Cons of Aftermarket Ignition Coil


  • Superior performance
  • Peak engine performance
  • This leads to energy leakage
  • Ensure maximum power delivery


  • It may get damaged before the guaranteed time


Will new ignition coils improve performance?

The high-quality ignition coil ensures that there is always enough power for the spark plug gap. High voltage leads to better initial flame geometry and thus an engine with greater performance

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Are aftermarket ignition coils good?

Aftermarket ignition coils are a waste of money. They don’t work as well, and in some cases, you can get by with using a universal aftermarket part so long as it doesn’t affect: The engine performance or safety features on your car.

Should I replace all ignition coils with spark plugs?

It is possible that your spark plugs may be worn, which would cause an unnecessary load on the ignition coils. Replacing both components at once will require some overlap in labor because they work closely together so you can avoid having two different jobs waiting for completion.

Final Words

Many factors such as customer need, cost, and manufacturing process are considered when choosing between OEM and aftermarket ignition coils. 

There are pros and cons to both OEM and aftermarket ignition coils. OEM ignition coils are usually more expensive but they are also of a higher quality. They last longer and perform better than their aftermarket counterparts. Aftermarket ignition coils are cheaper but they do not always last as long or perform as well as OEM coils.

So, which is better for your car, OEM or aftermarket ignition coils? The answer to that question really depends on a variety of factors. If you’re looking for the most reliable option and don’t mind spending a little more money, then go with an OEM coil. However, if you want something that will save you some money without sacrificing quality, then an aftermarket coil is likely a good choice for you. Ultimately, it’s up to you to decide what’s best for your vehicle.

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