Alpha One lower unit gearcase housing exploded view drawing
Last updated on 11/26/2023
MerCruiser and Alpha One (up to 1990) exploded view lower unit parts drawing
Water pump components, impellers, seals, shafts and gear sets
Manufactured by GLM, California. All parts include a 2 year warranty
Easy to identify photos with OEM Mercury numbers
Mercruiser Alpha 1 Gen 2 lower unit
Upper Housing
Description
OEM number
Price
(USD)
Price
(Canadian)
SEI Mercruiser Alpha 1 Gen 2 lower unit
Item 1 SEI SE116 Aftermarket SEI lower unit Mercruiser Alpha One Gen 2 aftermarket lower unit. For 1991 and up models only, serial numbers OD470000-Up, For 4 cylinder, V6 and V8 models up to 300 horsepower. Will not replace 2.00 or 2.40 ratio units.