Mercury Marine Shim Set 39899A1
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The Mercury Marine 39899A1 Shim Set is a genuine OEM Quicksilver service part identified as a shim set. Current part references also describe it as a shim assembly for a roller bearing, right-hand rotation, making it a precision setup part used in the correct Mercury or MerCruiser factory application where bearing preload or gearcase assembly spacing must be matched accurately.
Key Features
- Genuine Mercury Marine / Quicksilver OEM part number 39899A1
- Listed as a shim set
- Current references also describe it as a roller bearing shim assembly, right-hand rotation
- Intended for exact-fit Mercury or MerCruiser service use where precise setup matters
Engine Compatibility
Used in selected Mercury Marine and MerCruiser applications. Exact fitment depends on the specific engine or drive model, serial-number range, and the assembly diagram for the application being serviced. Mercury's official parts catalog directs users to identify parts by engine model or serial number for correct fit.
Serial Number Fitment Notice
Always confirm compatibility by engine or drive serial number before ordering. Shim and bearing setup parts are application-specific, and the correct match should be verified against the Mercury parts catalog for the exact model being serviced.
When This Part Needs Replacement
Replace this shim set when lower-unit or bearing service calls for a corrected shim thickness, when rebuilding the related assembly, or when the original shim is damaged, missing, or no longer suitable for accurate reassembly. Its role is tied to precise internal setup, so it is best replaced when the service procedure requires exact measurement and proper factory-spec assembly.
Installation Notes
Install this shim set only after confirming the exact application and required setup specification for the engine or drive being serviced. Because shim parts affect internal assembly accuracy, compare the replacement carefully to the service requirement and use the correct Mercury service information for the job.
Alternate/Superseded Part Numbers
Current replacement references also show 15-36178A1 as the superseding part number for 15-39899A1 / 39899A1.
Parts Desk Insight
Shim parts are small, but they are not generic filler pieces. In gearcase and bearing work, the right shim is part of the final setup, so matching by serial number and service application is the smart way to avoid repeat teardown and protect the assembly you just rebuilt.
Shipping: Ships same or next day for fast Canada wide shipping. ⚓
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.