Genuine BMW B58 TU High Power Stage 1 and Stage 2 Spark Plug – OEM 12122455258
Genuine BMW B58 TU High Power spark plug for turbocharged petrol engines. Perfect for stock, Stage 1 and Stage 2 tuned BMW B58 applications and ideal with upgraded turbo setups. This OEM BMW spark plug delivers strong, consistent ignition under higher boost and cylinder pressures, helping reduce misfires and maintain smooth idle and reliable performance in demanding conditions.
If you are searching for BMW B58 spark plugs, B58 TU spark plugs, Stage 2 spark plugs for M140i, M240i, M340i, 340i, 440i, 540i, 740i, X5 40i, X7 40i, Z4 M40i or Toyota Supra A90 spark plugs, this genuine BMW part number 12122455258 is the high power choice that enthusiasts and tuners trust.
Why choose this OEM BMW B58 TU High Power spark plug
- Genuine BMW part for exact fit and factory reliability
- High power TU spec supports Stage 1 and Stage 2 tunes and upgraded turbos on Gen 1 B58
- Excellent ignition stability under boost for tuned B58 engines
- Pre-set gap from BMW when used as a replacement plug – no gapping required
- Smooth running, clean cold starts and dependable performance
- Trusted by Nforcd and our customers on daily drivers and performance builds alike
Important notes
- For Gen 2 B58 engines including G20 M340i and 540i.
- Also a popular upgrade for Gen 1 B58 engines found in M140i, M240i, 340i and 440i when running a Stage 2 tune or an upgraded turbo.
- Listing is for one spark plug. Most B58 engines require six plugs for a complete replacement set.
- Part number: 12122455258.
Compatibility
This OEM BMW spark plug is used across a wide range of BMW models. If you are looking for B58 spark plugs for M240i, M340i, 340i, 440i, 540i, 740i, X5 40i, X7 40i, Z4 M40i or Toyota Supra A90, this is the correct high power plug. It is also listed by BMW for the following vehicles:
- 2' F45 Active Tourer LCI 216i, 218i, 220i, 225ix (05/2017 to 03/2019)
- 2' F46 Gran Tourer 218i (10/2016 to 02/2018)
- 2' F46 Gran Tourer LCI 216i, 218i, 220i (05/2017 to 03/2019)
- 3' G20 320i, 330i, 330ix, M340i, M340ix (10/2017 to 03/2019)
- 5' G30 520i, 530i, 530ix (09/2017 to 03/2019)
- 5' G31 520i, 530i, 530ix (09/2017 to 03/2019)
- 6' G32 GT 630i (09/2017 to 03/2019)
- 7' G11 LCI 730i, 740i, 745e (01/2018 to 03/2019)
- 7' G12 LCI 730Li, 740i, 740iX, 740Li, 740LiX, 745eX, 745Le, 745LeX (01/2018 to 03/2019)
- i8 I12 (02/2013 to 02/2018)
- i8 I12 LCI (11/2016 to 03/2019)
- i8 I15 (01/2017 to 03/2019)
- X1 F48 18i, 20i, 20iX, 25iX (10/2016 to 03/2019)
- X2 F39 18i, 20i, 20iX (10/2016 to 03/2019)
- X5 G05 40iX (10/2017 to 03/2019)
- X7 G07 40iX (11/2017 to 03/2019)
- Z4 G29 20i, 30i, M40i (10/2017 to 03/2019)
- MINI F56 (11/2016 to 03/2019)
- MINI F55 (11/2016 to 03/2019)
- MINI Clubman F54 (09/2017 to 03/2019)
- MINI Cabrio F57 (12/2016 to 03/2019)
- MINI Countryman F60 (10/2017 to 03/2019)
Also fits Toyota Supra A90.
Compatibility check
Not sure if this BMW spark plug 12122455258 fits your car? We can verify before dispatch. Enter your UK registration number or the last 7 digits of your VIN at checkout and we will run a compatibility check so you order with confidence.
Fitting and support
Want professional installation of your BMW B58 TU High Power spark plugs? Nforcd offers fitting at our Warwickshire workshop. Request a quote by emailing Sales@nforcd.com.
Manufacturer and warranty
Manufactured by: BMW
Warranty: Two years manufacturer warranty for UK customers and one year manufacturer warranty for international customers, provided a valid VIN is supplied at checkout on compatible vehicles.
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