Description
Mercury 8M0063270 Gearcase Shim Set
Mercury 8M0063270 is a genuine Mercury gearcase shim set used in compatible Mercury and MerCruiser gearcase assemblies where this exact part number is specified by the factory parts diagram.
Key Features
- Genuine Mercury marine gearcase shim set
- Used during compatible gearcase and lower unit service
- Includes multiple shims for gearcase setup and adjustment
- Direct replacement when Mercury part number 8M0063270 is specified
- Designed for exact part-number matching during gearcase repair or rebuild work
Fitment / Product Details
- Brand: Mercury
- Part Number: 8M0063270
- Product: Gearcase Shim Set
- System: Gearcase / Lower Unit
Gearcase shim fitment depends on engine or drive model, serial number, gearcase configuration, and the exact assembly being serviced. Verify fitment with your Mercury or MerCruiser serial number and factory parts diagram before ordering.
What’s Included
- Mercury 8M0063270 gearcase shim set
Gears, bearings, seals, shafts, carriers, tools, and other lower unit parts are not included unless listed separately.
Why You Should Buy
Gearcase repair work requires correct shim selection to support proper gear positioning and lower unit setup. Using the correct Mercury shim set helps support accurate gearcase service on compatible Mercury marine applications.
Common Applications
Used in compatible Mercury and MerCruiser gearcase assemblies where the factory parts diagram calls for gearcase shim set 8M0063270.
FAQ
Is this a complete gearcase rebuild kit?
No. This listing is for the gearcase shim set only.
Does this include bearings or seals?
No. Bearings, seals, gears, shafts, and related lower unit parts are sold separately unless specifically listed.
Can Wakeboss help confirm fitment?
Yes. Send your engine or drive model and serial number through Ask a Parts Pro and we can help check the correct gearcase diagram.

