Marine Engine (Inboard)

PCM

Model 150, 200, 220

Model Year Standard Plug Gap (mm)
T20R-U 0.9

Model 230, 250, 280, 350

Model Year Standard Plug Gap (mm)
T20R-U 0.9

302 cu.in. 18mm Heads

Model Year Standard Plug Gap (mm)
MA20PR-U 0.8

302 cu.in. 14mm Heads

Model Year Standard Plug Gap (mm)
T20R-U 0.9

305, 350, 454 cu.in.

Model Year Standard Plug Gap (mm)
T20R-U 0.9

351, 460 cu.in. 18mm Heads

Model Year Standard Plug Gap (mm)
MA20PR-U 0.8

351, 460 cu.in. 14mm Heads

Model Year Standard Plug Gap (mm)
T20R-U 0.9

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