Marine Engine (Inboard)

HOLDEN (CONVERSION)

All 3/8” Reach Head Models

Model Year Standard Plug Gap (mm)
W16P-U 0.8

All 1/2” Reach Tapered Seat Models

Model Year Standard Plug Gap (mm)
T20P-U 0.9

All 3/4” Reach Head Models

Model Year Standard Plug Gap (mm)
W20EP-U 0.9

All .708” Reach Tapered Seat Models

Model Year Standard Plug Gap (mm)
T20EP-U 0.9

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