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What are After Market Auto Parts?

Air intakes are often after-market parts, auto parts that aren't part of the factory options on a car.
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  • Written By: Michael Giuffre
  • Edited By: R. Kayne
  • Last Modified Date: 18 November 2014
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Many people love their cars, and enthusiasts often want to make their cars the baddest, best or the fastest cars that they can afford. That's where after market auto parts come in. "After market" or "aftermarket" simply means that the product being installed onto or into the car is made by a company other than the original manufacturer of the vehicle. Any part made by the original manufacturer is considered OEM, or original equipment manufacturer. Most performance parts are manufactured by aftermarket companies due to their ability to specialize in particular field.

When buying a new automobile from a dealership, factory options are referred to as "stock options" or "stock" for short. The wheels, engine, transmission and all performance parts are stock, including the lighting and interior. Sometimes, the dealership offers upgrades, such as a better speaker system, but even these are stock options, and commonly limited. Many people elect to further modify their vehicles after purchasing them, to make them truly unique.

Many of the modifications made to one's car are made using after market auto parts. The parts range anywhere from air intake kits to car graphics kits and chrome rims. They can sometimes be installed by the car's owner with minimal or no knowledge about automobiles, but other parts will require professional installation. Car owners should seek out knowledgeable advice in order to make an educated decision before buying an aftermarket product.

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In many instances, using after market auto parts on a vehicle may void the car's warranty, if it has one. Owners should, therefore, be sure to check their automobile's manufacturer warranty before electing to make aftermarket changes. Additionally, many of these parts are specifically designed to fit only certain model cars and certain years of that model. Before ordering a part, the consumer should be certain it matches his vehicle's make, model, and year.

Perhaps even more important is compatibility with the law. Many aftermarket parts are not illegal to sell, but when installed in an automobile, they may violate local laws and regulations. For instance, the amount of window tinting a person can legally have on his car varies by location, as well do emissions laws and taillight and headlight colors and brightness levels. Just because a part is being sold, that doesn't mean it is legal to install in an automobile.

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Discuss this Article

anon283064
Post 6

Toy-grade RC cars come in ready made models and there is no assembling involved. These cars are pre-assembled and they cannot be repaired or tinkered with. After all, they are toys that are to be used as long as they last.

anon146091
Post 5

what is the difference between A/M QRP and reconditioned?

anon138293
Post 4

anyone know, are the after market parts made in the usa? thanks!

anon41709
Post 3

i have a 2000 lincoln continenal and had the car fixed. they put aftermarket struts, springs, bearings on the car. should they have asked me first before installing them?

anon28325
Post 2

Aftermarket parts are made of the same quality metal as the OEM or cheaper which makes their cost lower as well?

anon12448
Post 1

Aftermarket car parts are car parts that are not OEM. Most aftermarket car parts are performance car parts that enhance the performance of your vehicle.

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