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F56 Guide - How to change your spark plugs

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44K views 18 replies 8 participants last post by  mvt888  
#1 · (Edited)
Hi all, thought I would publish this quick guide on how to change spark plug on your F56.


Details on the plugs I used in the UK for my Cooper S F56:

The newer NGK BMW part number is 12 12 0 040 551 for the individuals. The NGK number is SILZKGR8B8S.

BMW also supply champion plugs in the same box with the same part number as the NGK, guidance I have been given is that the champion plugs are an inferior product and you really want the NGK plugs. Please ensure that you check with your supplier that they are providing the NGK's.

Tools Required:
8mm star socket
14mm bi-hex spark plug socket
wrench and extender bar for the above
 
Discussion starter · #5 ·
jeremybingham said:
Only one unique tool imo! star sockets are pretty normal in the Uk called torx. The plug tool is unique to bmw though!
Click to expand...
That's correct

02fanatic said:
Helpful when the time comes.....no anti-seize on the new plugs though? I always do that!
Click to expand...
Nope never used anti-seize on spark plugs and NGK recommend against that: https://www.ngksparkplugs.com/about-ngk/spark-plug-101/5-things-you-should-know-about-spark-plugs

NGK spark plugs are installed at the factory dry, without the use of anti-seize. NGK tech support has received a number of tech calls from installers who have over-tightened spark plugs because of the use of anti-seize. Anti-seize compound can act as a lubricant altering torque values up to 20 percent, increasing the risk of spark plug thread breakage.
 
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