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BSW 6.25" to 5.25" Speaker Adapter Plates for BMW 3 Series / M3 99-06 (E46) BSW 6.25" to 5.25" Speaker Adapter Plates for BMW 3 Series / M3 99-06 (E46)

$19.99 Per Pair
IN STOCK | When will it ship?

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Changing the Speakers in Your 99-06 BMW 3 Series / M3 used to be difficult...

Until now. You've had to drive all over town looking for someone to custom fabricate adapter plates to fit most 5.25" aftermarket speakers into the front doors of your BMW - or spend a whole day building the plates yourself. Often, the speaker is too deep or, if you have a sedan, the speaker mounting holes don't line up.

Now There's a Solution!

For those that want a simple, quick, easy solution, Bavarian Soundwerks has created an adapter that allows a 5.25" speaker to be mounted quickly and easily in the front or rear of your 99-06 3 Series / M3 (except Convertible rear speakers) without the hassles of mounting a 6.5" speaker. (6.5" speakers often require permanent modifications to your door panel to allow them to fit and operate properly, complicating installation significantly). 

Features & Benefits:

  • These gloss black polyethylene adaptors are designed using a Computer Controlled CNC router, which makes only the most accurate and precise cuts possible.

  • Accommodate most popular brands of aftermarket 5.25" speakers.

  • Ensure that your speakers are held tightly in place, and will be ready for the thousands of times your door is opened and closed.

  • Unlike standard ABS plastic adapters, which are known for their flexing and likelihood of cracking, because these adapters are made of polyethylene, a very dense plastic that does not resonate or crack, sound quality and speaker performance is improved

Applications:

  • Front Driver & Passenger Midbass Speakers in 99-06 BMW 3 Series / M3 Coupe, Cabrio (E46 Chassis Only)
  • Front Driver & Passenger Midbass Speakers in 99-05 BMW 3 Series Sedan, Wagon (E46 Chassis Only)
  • Rear Driver & Passenger Midbass Speakers in 99-06 BMW 3 Series / M3 Coupe, Sedan (Sedan vehicles can also accomodate many 6.5" midbass drivers in the rear if preferred)

Notes on Installation:

  • We recommend using gasket tape to perfectly seal the front of the speaker from the rear to ensure optimal sound from your front speakers.
  • When mounting your speakers to the rings, we also recommend placing the factory foam back around the rear of the speaker. We noticed a significant increase in mid-bass response in doing so.
  • Please note your particular speakers' hole cutout diameter. There are two sizes of hole cutouts to choose from; picking the right diameter will insure a front to rear separation and improve performance.
BMW 3 Series E46 '99-'06 (Convertible, Coupe, Sedan, Wagon)
BMW M Series M3 E46 '01-'06 (Convertible, Coupe)

Customer Reviews

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Author: Luke
Ordered the larger hole cutout, worked perfectly with my MB Quarts! Excellent construction.

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