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Mercury Lower Unit Components
Mercury 65-150HP FourStroke Bearing Carrier Retainer 8M0185683
Mercury OEM bearing carrier retainer 8M0185683 secures the bearing carrier inside the gearcase on select Mercury and Mariner FourStroke outboards. It is an important retaining component used in the propeller shaft area of the lower unit.
Mercury 8M0185683 supersedes previous part numbers 8M0168886 and 8M0069653. This retainer is commonly found on 65-150HP FourStroke models, including 75-115HP EFI and SeaPro engines, 65-80HP Jet models, and gearcases using a 2.07:1 gear ratio. Always verify by engine serial number before ordering.
Compatible Applications
| Brand | Engine / System | Application | Fitment Note |
|---|---|---|---|
| Mercury / Mariner | 75-115HP EFI FourStroke | Gearcase bearing carrier | Verify by serial number |
| Mercury SeaPro | 75-115HP FourStroke | Bearing carrier retainer | Used on select commercial models |
| Mercury Jet | 65-80HP Jet | Lower unit bearing carrier | Verify gearcase configuration |
| Mercury / Mariner | 65-150HP FourStroke | 2.07:1 gearcase applications | Serial number verification recommended |
Important Fitment Note
Bearing carrier retainers vary by gearcase design and gear ratio. Always verify compatibility using your engine serial number and OEM parts diagram before ordering.
OEM & Cross Reference Numbers
| Current OEM Number | 8M0185683 |
| Supersedes | 8M0168886, 8M0069653 |
| Description | Bearing Carrier Retainer |
What This Part Is Used For
This retainer locks the bearing carrier securely into the lower unit gearcase. It helps maintain proper alignment of the propeller shaft bearings and internal gearcase components.
During lower unit rebuilds or bearing carrier service, the retainer should be inspected for damage, corrosion, or thread wear. Replacing worn retainers helps ensure the bearing carrier remains securely fastened during operation.
Key Features and Benefits
- Current Mercury OEM number 8M0185683
- Replaces Mercury 8M0168886 and 8M0069653
- Secures the bearing carrier inside the lower unit
- Used on select 65-150HP FourStroke gearcases
- Ideal for gearcase repair and lower unit rebuilds
- Designed for long service life in marine environments
FAQ
What does this retainer do?
It secures the bearing carrier inside the lower unit gearcase and helps retain the propeller shaft bearing assembly.
Which part numbers does it replace?
Mercury 8M0185683 replaces 8M0168886 and 8M0069653.
Will it fit every Mercury FourStroke?
No. It is used on select 65-150HP FourStroke gearcases. Always verify by engine serial number because gearcase components vary by model and gear ratio.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1-5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Parts must be new, unused, and in original packaging.
- Installed parts are not returnable.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Terms
Mercury bearing carrier retainer, Mercury lower unit retainer, Mercury gearcase bearing retainer, Mercury FourStroke gearcase parts, prop shaft bearing retainer, Mercury 75HP FourStroke, Mercury 90HP FourStroke, Mercury 115HP FourStroke, Mercury SeaPro lower unit parts
Searchable Part Numbers
8M0185683, 8M0168886, 8M0069653
8M0168886
8M0185683