SE218 Lower Unit Mercury OB Counter Rotation | SEI 90-218CR

SE218 Counter Rotation

Replaces Most Mercury 3.0L Counter Rotation Lower Units
Do not use for standard rotation
13 Splines
25 and 30 inch Shafts.
If you have an 8 Spline drive shaft you will need to buy the stub shaft unit
and purchase an upper driveshaft from an OE dealer.
25″ 45-823901A 1
30″ 45-824115A 1 (This shaft is no longer available from the OE. You will need to either source a used one or repair your old unit.)

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