Alpha 1 & Gen. 2 Outdrive Parts *Drawings *Videos
Mercruiser Alpha One Tension Washer
GLM Marine aftermarket stern drive washer upper gearcase outdrive part
GLM P/N 28330 replaces OEM 12-45810 or Sierra 18-3712This washer installs between the
drive gear and short yoke lock nut in the upper gear caseCompatible with all models, all years (except
Tech support exploded view Alpha One drawingsSearch by part number or description here
28330 Tension Washer Alpha One 12-45810
P/N 28330 Tension washer $4.29
28310 Upper gear housing Mercruiser short yoke. P/N This part is compatible with all models from 1964 - 1997 (serial numbers 1684188 - 0K999999).
Replaces OEM 46020-1. $60.95
87500 P/N Mercruiser / Alpha 1 Generation 1 upper housing seal kit (up to 1990). Replaces OEM 26-32511A1. $24.95
P/N 87501 1991 and up model lower seal / gasket kit. Replaces OEM 26-88397A1. $25.95
P/N 508235 Small 4 ounce gasket compound. $19.15
P/N 317201 Gasket sealing compound. Use on o-rings and gaskets. $24.15
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