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im curious if I could put a 2014 hp4 engine on my 2012 bmw s1000rr will it fit I was told by bmw it wouldn't fit but ive heard otherwise from a few other people would like and appreciate anyones knowledge on this thank you
 

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The word 'fit' is wrong. The engine cases are the same from first release 2009 to 2019 K46/K42. So yes, it will fit into your frame. You will have to remove a few sensors from the 12 engine and put them on the 14 engine. Not a big deal as they do bolt right on. So if you found a low miles 14 engine, jump on it and replace the 12.
 

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The word 'fit' is wrong. The engine cases are the same from first release 2009 to 2019 K46/K42. So yes, it will fit into your frame. You will have to remove a few sensors from the 12 engine and put them on the 14 engine. Not a big deal as they do bolt right on. So if you found a low miles 14 engine, jump on it and replace the 12.
Just so I'm clear it's a 2012 s1000rr and a 2014 hp4 so your saying it will fit in the frame of my 2012 RR ?
 

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Just so I'm clear it's a 2012 s1000rr and a 2014 hp4 so your saying it will fit in the frame of my 2012 RR ?
Yes. The engine for the K42 is no different than the K46 in design and mounting. Like I indicated, you will have to remove a few sensors from the 12 engine and install them to the K42 engine so that your wiring harness attaches. Then the throttle bodies will have to be used from the 12 because they match the 12 wiring and ECU.

You can buy a wrecked 12-14 K42 HP4 and transfer all the parts to a 12-14 S1000RR K46 frame.

The only thing that makes the K42 HP4 so special is the wiring is completely different, it was the first with DDC suspension, it has adjustable DTC, the protocols for the ECU are matched only to the HP4 cluster, it came with forged wheels.
 
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