Genuine BMW N55 S55 S63 Replacement Spark Plug
Part Number: 12120039634
Restore factory power, smooth idle and crisp throttle response with this Genuine BMW OEM spark plug for N55, S55 and S63 engines. Perfect for BMW M2, M2 Competition, M3, M4, M5, M6 and F26 X4 M40iX applications, this direct replacement BMW spark plug cures common ignition issues such as misfires, hesitation and rough running. If you are searching for BMW N55 spark plug, BMW S55 spark plug or BMW S63 spark plug, this is the genuine part you need.
We use these plugs on our own cars and for customer vehicles. Feedback is consistently positive, with owners reporting quieter cold starts, smoother revs and restored performance after replacing tired plugs. Choose genuine BMW OEM ignition components for reliability, longevity and the correct heat range for tuned and standard engines alike.
Why choose this Genuine BMW spark plug
- OEM quality and fitment for N55, S55 and S63 engines
- Direct replacement to fix misfires, rough idle and poor fuel economy
- Maintains optimal combustion, performance and emissions
- Ideal service item for preventative maintenance and tuned setups
- Backed by BMW manufacturer warranty
Compatibility
This Genuine BMW spark plug 12120039634 fits:
- BMW models with N55 engine
- BMW M models with S55 engine including M2 Competition, M3, M4
- BMW models with S63 engine including M5 and M6
- Also fits F26 X4 M40iX 2014 to 2018
Searching for BMW M2 spark plug, BMW M3 spark plug, BMW M4 spark plug, BMW M5 spark plug or BMW M6 spark plug? This genuine plug is the correct OEM replacement for these applications when equipped with N55, S55 or S63 engines.
Recommended maintenance
- Replace the full set of spark plugs together for your engine
- Inspect ignition coils and plug boots while replacing
- Ideal to replace at service intervals or at the first sign of misfire
What is included
1 x Genuine BMW spark plug
Image shown is for illustration only and may not match the exact item.
Fitting and support
Professional installation recommended. For fitting, speak to Nforcd in Warwickshire and request a quote at Sales@nforcd.com.
Compatibility check before dispatch
We will verify fitment prior to shipping. Provide your UK registration number or the last 7 digits of your VIN at checkout so we can confirm this BMW OEM spark plug 12120039634 suits your vehicle.
Manufacturer and warranty
Manufactured by: BMW
Warranty: Two years manufacturer warranty for UK customers and one year for international customers when a VIN is provided at checkout on compatible vehicles.
Buy with confidence from Nforcd and get the right BMW N55 spark plug, BMW S55 spark plug and BMW S63 spark plug for your M car. Restore peak performance today.