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R56 Non-oem spark plugs?

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Old Dec 22, 2025 | 05:47 PM
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Non-oem spark plugs?

I went to do plugs pre-emptively a couple weeks ago, neither of my spark plug sockets fit. I looked it up and found I needed a 12 point 14mm spark plug socket. Unfortunately, I was lazy and didnt check the plugs. I get the socket and noticed it wasnt doing anything yesterday. I took a peek and noticed that the plugs are 6 sided and between my dad and I, neither of us had sockets that fit. Any idea of what size these plugs may be? I was wondering if there might be a common size plug people put in that is not oem. Its a 2015 r57 s, but I figured Id have better luck in here. I dont have any issues currently, so Im not sweating it yet, but Id rather get plugs I know are good into the car. Plus, I plan to eventually get it tuned with a bunch of other upgrades, so Ill need to put step colder plugs in. Thanks! Pfa
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Old Dec 22, 2025 | 08:20 PM
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My 2012 R56 spark plugs fit a thin walled 14-mm socket. You can measure the size of your non-OEM spark plugs using calipers if you or your dad has this tool.
 
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Old Dec 23, 2025 | 05:11 AM
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14mm sounds about right. Make DANG sure it’s a thin walled socket, or else it could get stuck.
 
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Old Dec 23, 2025 | 08:21 AM
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Yep

This is the normal one. This wall 14mm

https://www.ecstuning.com/b-schwaben.../001247sch01a/

But what happens is some spark plugs like Brisk and others use a 6 point. VS the 12 point.

This should work for 6 point. https://www.ecstuning.com/b-schwaben...et/s-3858-125/ or https://www.ecstuning.com/b-bav-auto.../b8800072~bav/
 
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Old Dec 26, 2025 | 03:28 PM
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Originally Posted by ECSTuning
Yep

This is the normal one. This wall 14mm

https://www.ecstuning.com/b-schwaben.../001247sch01a/

But what happens is some spark plugs like Brisk and others use a 6 point. VS the 12 point.

This should work for 6 point. https://www.ecstuning.com/b-schwaben...et/s-3858-125/ or https://www.ecstuning.com/b-bav-auto.../b8800072~bav/
Thank you! I have 12 point boschs from yall I was looking to install and hit that road block 😭 Any tips on how to easily get the plugs off the coil packs? Feels like Im chewing uo the wires each time I do it, especially on cylinder 1.
 
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Old Dec 29, 2025 | 08:00 AM
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Welcome.

On the N12/N16/N14N18 coil packs you unsnap the top clips/plug and wiggle side to side as you pull straight up. They will be on tight and inspect them for wear/rust and arching marks. If they have those get new ones. If clean you just push them back down.

Same as the BMW inline 6, they are shared. I dont use the flat head, I just do the wiggle with two fingers.






 
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