OMC Parts Drawing *Cobra *Mercruiser *Alpha SEI Outdrives
Mercruiser Alpha 1 Gen 2 lower unit parts drawing
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.
$1199.99
$1599.89
85590 Face seal
#2 Face seal 26-816575A2
$4.95
$6.89
89630 Mercruiser water pump impeller
#3 Impeller 47-43026T2
$15.95
$26.89
31240 Gasket
#4 Gasket 27-817277-1
$4.95
$4.89
12500 Face plate
#5 Face plate 817276-1
$6.95
$10.89
30090 Gasket
#6 Gasket 27-43033-1
$4.95
$4.89
81390 O-ring
#7 O-ring 25-90011
$4.95
$4.89
85011 Oil seal
#8 Oil seal 26-66302
$8.95