Spark plugs
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Turbo SE and S2
Recommended - Gap: 0.8mm (0.031")
- NGK BKR6E
- ND K20PR-U
{For my M100 S2, I use NGK BKR6EIX, No problem!}
Alternatives - Gap: 1.1mm (0.043")
- NGK BKR7E-11
- ND K22PR-U11
Others - Gap: Preset by manufacturer - typically 0.8 or 1.1mm
- NGK BKR6EIX : Iridium centre electrode (recommended - heavy duty)
- Bosch FR6DC+ : Super Plus (inexpensive)
- Bosch FR56 : Super 4 (recommended - currently in use - no problems)
- Denso K20PRU : Copper Cored (inexpensive)
- Denso IK20 : Iridium centre electrode
N/A
Recommended - Gap: 1.1mm (0.043")
- NGK BKR6E-11
- ND K20PR-U11