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What speaker size will fit in my car?

I want to install new speakers in my car but I don’t know if I need a specific speaker size or if any size should work. How can I figure out the speaker size I need for my car?

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Annette Maxon · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
We love new speakers and think they’re such an awesome upgrade!
The speaker size you need will vary from car to car, but also varies depending on the speaker you’re wanting to replace.
Here’s a look at the most common speaker sizes you’ll come across:
  • 4x6 speakers: Budget-friendly; typically used on the dash.
  • 5.25 speakers: Small; often used on the back doors or in the back dash; helps improve the sound of larger speakers.
  • 5x7 speakers: Fits a wide range of vehicles; good all-around option.
  • 6x8 speakers: Typically on front car doors; budget-friendly; best option to improve sound’s depth and clarity.
  • 6.5 speakers: Improves clarity and precision of sound.
  • 6x9 speakers: Great performance for a large range of frequencies.
Now that you know what speakers might fit your needs, there are some tried and true tips to keep in mind before buying your new speakers:
  • Always check the size of the speakers already installed in your car—opting for a speaker that is the same size as what you currently have is an easy choice.
  • Measure the speaker itself by measuring from one of the holes on the speaker frame to the hole diagonally across from it.
  • Check the measurements you have for your car speakers! And double-check again! You’ll likely come across common speaker sizes; however, know that depending on the speaker brand and even vehicle brand, the speakers’ dimensions can vary slightly.
If you’re wanting to install new speakers that aren’t part of your current system, then it is best to visit a pro who is familiar with outfitting car speakers.
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