Mercruiser Outdrive Parts Drawings *How to Videos
Mercruiser Gearcase Lower Unit Ball Bearing
Stern Drive Part - Reverse Gear Bearing
GLM 21620 replaces Mercury 30-88957T or Sierra 18-1155Installed into the lower gearcase Compatible
with Mercruiser models from 1964 and up (s/n 1684188 and up) Not compatible with the 60, 80 and 90 models
21620 Ball Bearing Mercruiser Part 30-88957T
21620 OEM 30-88957T
Customers who ordered P/N 21620 also purchased:
Prop shaft bearing 11410. If you are pushing out this part in the carrier in order to remove the seals, you may need to replace
this part. Replaces OEM 31-30956T, Sierra 18-1158.
87510 Seal Kit 26-33144A2
Lower unit seal kit 87510 is required when re-assembling the parts in the bottom end. Replaces OEM 26-33144A2, Sierra
11020 Reverse Gear 43-92320T
Reverse gear 11020. Compatible with stern drives up to 1983. Does not work on the MR or Alpha 1 models. Replaces OEM 43-92320T,
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