MerCruiser 73020-C1 73020A20 MR Alpha One Gen I Lower Unit Bearing Carrier 85-90 Engine Mounts For #1 drives s/n 3469428

For #1 drives s/n 3469428 and up Except

OMC Exhaust Boot 910168 (1x)

8L 229cid V6 GM 180hp 170hp 185hp

9hp & 15hp outboard models 1978-1992

Pretty sure 45892A2 or 35865A2 and either of which should be interchangeable

MerCruiser 73020-C1 73020A20 MR Alpha One Gen I Lower Unit Bearing Carrier 85-90 Engine Mounts For #1 drives s/n 3469428Item Details MerCruiser Sterndrive Alpha One Lower Unit Bearing Carrier 73020A20 (Stamped 73020 C1) Used primarily in MerCruiser MR & Gen I (1985 1990) However, You just need to inspect the casting number to see if the one you are replacing is the right one. This type was the later type used mostly newer stuff using tab washer 14 18323 on Gen I & Gen II Standard Rotation lower units. This should only be used to replace a bearing carrier 73020 C1. It