M&P USA Universal Fiber Optic Loop Bypass Loop Adapter Compatible with 2006-2011 BMW, Mercedes & More

Rated 4.95 out of 5 based on 119 customer ratings
(119 customer reviews)

$15.89

& Free Shipping

Our fiber optic loop features a unique, universal, female style connector that ensures proper fitment!  You may have noticed that our bypass loop looks different than other bypass loops out there!  We modified it to universally fit the connector for every component in your vehicle including, but not limited to: Satellite receivers, Power amplifiers, TCUs (Bluetooth) module, MULF units, CD changers, COM Boxes, and MMI Modules! Compatible with 2006-2011 BMW, Mercedes, and any vehicle that utilizers the “MOST” fiber optic system.

Free shipping on orders over $50!

  • No-Risk Money Back Guarantee!
  • No Hassle Refunds
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  • Our UNIVERSAL Female Fiber Optic Loop is Plug & Play & fits ALL BMW and Mercedes fiber optic multimedia component connectors. (Other seller’s standard adapters WILL NOT fit many multimedia components without modification)
  • Compatible With: BMW, Mercedes, and Many More – SCROLL DOWN for more info
  • Proudly made AND supported in the USA! We are here to help you diagnose your vehicle.  Covered by our LIFETIME Warranty Replacement Guarantee. 
  • PLEASE Contact us for help with the product, or your vehicle’s SOS light or Audio Issue!
  • Lifetime warranty is included on all of our products!

BMW – Checking Vehicle Compatibility:

BMW: Our fiber optic loop is compatible with all BMW models from 2006-2011. (keep reading below for newer models) In BMWs, components with fiber-optic connections are identified by their green optical cables. The image on the left shows a typical component layout with the male MOST connector cable disconnected from a component. In BMWs, multimedia components are typically located in the trunk near the driver-side tail light, or in the bottom center area underneath the cover panel. Components and locations will vary based on your make, model and vehicle options (we will help you find them as needed).

2012+ BMW models utilize a consolidated communication module (com box) replacing the older, separate components used in previous years. Our fiber optic bypass is compatible for testing purposes, however, 2012+ BMWs will likely require further troubleshooting (we are happy to help).

Mercedes – Checking Vehicle Compatibility:

Mercedes: Our fiber optic loop is compatible with most Mercedes models from 2004-2011. Mercedes vehicles generally have more components connected to the fiber-optic network than BMWs. In Mercedes, components with fiber-optic connections generally can be identified by their orange optical cables.

The image on the left shows a typical Mercedes component layout. In Mercedes, vehicles’ multimedia components are typically located in the trunk near the driver side tail light, or in the bottom center area underneath the carpeting panel. Component locations will vary based on make and model, we will help you find them as needed. Once the component you wish to test is located, our fiber optic bypass will fit .

Other Vehicle Manufacturers – Checking Vehicle Compatibility:

Other Vehicles: Countless other vehicle manufacturers utilize MOST (Media Oriented Systems Transport) technology. To check compatibility simply locate one of the components in the trunk area and look for a fiber-optic cable connection; they are typically either orange or green cables. Once located, disconnect the connector from the component to check and see if it looks like a male MOST connector (reference the two male plug examples in the image on the left). Either style of male optical connectors loop shown in the photo are compatible with our fiber optic loop.

Note: There are additional styles of fiber-optic connectors out there, as long as the spacing and diameter of the two on the connector match, our loop will work. If you’re not sure, you can always order one of our fiber optic bypass units, give it a try, and return it if it does not fit.. We promise, we wont be offended 🙂

Weight 1 oz
Dimensions 4 × 6 × 1 in

119 reviews for M&P USA Universal Fiber Optic Loop Bypass Loop Adapter Compatible with 2006-2011 BMW, Mercedes & More

5 Star

96.64 %
115 review(s)

4 Star

1.68 %
2 review(s)

3 Star

1.68 %
2 review(s)

2 Star

0 %
0 review(s)

1 Star

0 %
0 review(s)

Reviewed by 119 customer(s)

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    Wood chuck

    It works

    Have audio/radio in my 7 series again.. thought it was the cd changer but ended up being the navigation that had to be bypassed !!

    July 29, 2026
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    WI Badger

    1st! - Confirm APPLICATION

    1st confirm application – You’re probably only getting this product for a very specific fix. Mine was a 2008 BMW 128i with the radio stopped working. The interweb said its most ‘likely a bad XM satellite receiver. So, I went there. All other possible reasons were messy, and I knew I had a bad receiver but until recently the radio still worked. 2008 is kinda old, so not worth fixing XM. This fiber optic cable by-passes the bad XM module. In my car the module is difficult to reach. Interweb didn’t have specific instructions how to access. After examining and some luck I removed the black bracket that held the module. This worked. Otherwise, could not access plug. Remove black plug. This cable snaps into place into 2 FO slots. And they include a tie wrap just to make sure it doesn’t unsnap. OK to remove XM and leave cables in place. $18 seemed a tad pricey, but way less than $600 a repair shop would have charged. I find these real-world fixes very satisfying. Way better than any video game. Good service. Fast delivery. Nice packaging. It worked.

    July 6, 2026
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    Laurie L

    Try this first

    Saved me a lot of money

    June 23, 2026
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    PNW Keith

    Cheap, effective trouble-shooting tool for early 2010s BMW audio systems.

    Bought the M&P universal fiber optic loop bypass adapter to help troubleshoot a bad component plaguing the audio system in my BMW e70 X5. With the help of this loopback tool, I was able to zero in on the faulty amplifier. Part replaced and I’m back in business. Anyone with a 2010s era BMW should keep one of these on hand. Could save hundreds in diagnostic charges to have a dealer basically do the same thing. Fit perfectly in the fiber port on each of the audio components in the fiber optic system of my car. 

    June 9, 2026
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    Gregory Lucht

    fiber loop

    Does what it is supposed to do

    May 14, 2026
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    jose g.

    No audio , bypass fix

    Got the bypass was a little skeptic on the bypass working .starting diagnostic the fiber optics system in my 2013 c300 with no audio.found the issue with the media module .once I install the bypass turn the car on I had audioI recommend this bypass

    March 19, 2026
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    Gumer Gonzalez

    easy and to the point instalation

    after dealing with audio cutting in and out for over a year, this simple quick installation brought my audio back. dont hesitate to try it before you start replacing modules

    February 12, 2026
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    Mynor Andrew

    razonable precio

    es de mucha utilidad y arregla facilmente el radio de tu carro

    January 17, 2026
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    one direction

    E60 bmw

    Works perfectly for e60 bmw

    January 14, 2026
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    Allan G.

    Very handy fixed my car

    Great loop back tool fixed my radio

    December 23, 2025
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