Aftermarket Marine 

            
800-Fix-Boat

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S.E.I replacement Mercruiser Alpha I lower unit
Price: $744.95
Availability: In Stock
Item #: sei106l -

S.E.I. Replacement for Alpha  lower complete gear housing.Fits from 1972 to 1992 where the Gen II starts. replaces 1623-8951a43or g.l.m. 18100.

S.E.I replacement Mercruiser Alpha II lower unit
Price: $944.95
Availability: In Stock
Item #: sei116l -

S.E.I replacement Mercruiser Alpha II lower unit counter rot
Price: $1,044.95
Availability: In Stock
Item #: sei116crl -

s.e.i. replacement for counter rotating mercruiser lower gear housing for all gen II drives any ratio.

S.E.I replacement Mercruiser Bravo I lower side pu
Price: $944.95
Availability: In Stock
Item #: seibr1s -

s.e.i. Replacement lower gear case for Bravo with side water p-u.  Includes  no fault warranty.

S.E.I replacement Mercruiser Bravo I lower unit dual p-u
Price: $944.95
Availability: In Stock
Item #: seibr1d -

s.e.i. replacement 1.47 upper drive alpha
Price: $649.00
Availability: In Stock
Item #: sei106147u -

s.e.i. replacement 1.47 upper drive alpha II
Price: $849.00
Availability: In Stock
Item #: sei116147u -

s.e.i. replacement 1.64 upper drive alpha
Price: $645.00
Availability: In Stock
Item #: sei106164u -

s.e.i. replacement 1.64 upper drive alpha II
Price: $845.00
Availability: In Stock
Item #: sei116164u -

s.e.i. replacement 1.81 upper drive alpha
Price: $645.00
Availability: In Stock
Item #: sei106181u -

s.e.i. replacement 1.81 upper drive alpha II
Price: $845.00
Availability: In Stock
Item #: sei116181u -

s.e.i. replacement 1.94 upper drive alpha
Price: $645.00
Availability: In Stock
Item #: sei106194u -