Spark Plug Specifications: OEM vs. Replacement Types

Find essential spark plug specifications, including gap sizes and replacement types, for reliable engine performance in various models.

Updated 9 months ago by Juan Velez

For engines 118cc and higher:

Spark Plug Specifications OEM Type: NHSP F6RTC

Replacement Type: NGK BPR6ES or equivalent

Gap: 0.028-0.031 in. (0.7-0.8 mm)

For engines 79cc or 80cc in size:

OEM Type: NHSP E7RTC

Replacement Type: NGK BPR7HS or equivalent

Gap: 0.024-0.028 in. (0.6-0.7 mm)

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