- Bosch Spark Plug 12122158253 (FR-7-NPP-332)
Up to December 2009 - Service life: 100K miles MAX.
- NGK Spark Plug 12120037663 (LZFR6AP11GS)
From December 2009 - Service life reduced to 60K miles and tight to updated DME MSV80 12147602220 and up.
This NGK version is slightly more efficient (extended center electrode projection provides higher ignitability and imprved performance) and has a tiny bit more midrange power (Wider gap) but has half lifetime than the Bosch version (the Ground electrode made of Nickel instead of Platinium). The heat range is the same.
BMW Torque: 30 nm +-3
| NGK | Bosch |
| Shell | |
| .043" (1.1mm) | .039" (1.0mm) |
| 5/8" (16mm) | 5/8" (16mm) |
| Gasket | Gasket |
| Solid | Solid |
| 14mm | 14mm |
| ISO | |
| 26.5mm (1.04") | 26.5mm (1.04") |
| 1.25mm | 1.25mm |
| Part Information | |
| NGK/NTK | Bosch |
| 40K Miles | 80k Miles |
| Specifications | |
| 6 | 7 |
| Yes | Yes |
| 5k Ohm | 6K Ohm |
| Special Gasket | |
| Aluminum: 24.5-30 nm. | Aluminum: 30 nm. |
| Center Electrode | |
| Platinum | Platinum |
| Fine Wire | Fine Wire |
| Extended Projection | Projected |
| 1.0mm | 0.6mm |
| Ground Electrode | |
| Nickel | Platinum |
| Standard | Standard |
Oil burning N52 Spark Plugs
