Mercury Quicksilver — .770 Propeller Tab Washer — 8M0204724
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Mercury Quicksilver .770 Propeller Tab Washer 8M0204724
Mercury Quicksilver 8M0204724 is a genuine OEM .770 in. propeller tab washer used with the 2-pin Flo-Torq drive sleeve adapter in applicable Mercury Marine propeller assemblies. It forms part of the propeller-retaining hardware at the propeller nut and helps mechanically secure the nut after correct installation.
Compatible Applications
- MerCruiser Alpha One Gen II propeller assemblies using the specified 2-pin Flo-Torq adapter
- MerCruiser Bravo I propeller assemblies using the specified 2-pin Flo-Torq adapter
- Mercury and Mariner outboard applications whose propeller-hardware diagram specifies 8M0204724 or superseded 8M0042130
Fitment notice: Propeller hardware varies by drive, gearcase, propeller, hub system, and drive-sleeve adapter. Confirm the exact propeller or gear-housing diagram before ordering.
Part Details
- Current part number: 8M0204724
- Mercury description: TAB WASHER-.770
- Brand: Mercury Quicksilver
- Product type: Propeller tab washer
- Nominal size: 0.770 in. or 19.56 mm
- Adapter system: Applicable 2-pin Flo-Torq drive sleeve adapter
- Quantity: One washer per applicable assembly
- Supersedes: 8M0042130
- GTIN: 678633186400
- Approximate weight: 0.02 lb or 9 g
- Condition: New
Key Features
- Genuine OEM propeller-retaining component
- Designed for the specified 2-pin Flo-Torq hardware arrangement
- Used with the propeller nut retaining hardware
- Current replacement for Mercury 8M0042130
When to Replace This Washer
Replace the tab washer if a locking tab is cracked, broken, missing, repeatedly bent and weakened, or if the washer is distorted, corroded, or mechanically damaged. Do not rely on damaged locking tabs to retain the propeller nut assembly.
Installation Notes
Install 8M0204724 in the correct orientation with the corresponding Flo-Torq drive sleeve adapter and propeller nut hardware. While the propeller is removed, inspect the forward thrust washer, drive sleeve, aft adapter, propeller nut, hub components, and propeller-shaft splines. Follow the specified propeller-nut tightening procedure for the exact drive or outboard.
Related Products
- Mercury Quicksilver Propeller Nut Kit 52707Q1
- Mercury Quicksilver Tab Washer 816629Q — a different washer configuration for identification comparison, not an automatic substitute
Technical FAQ
Can this washer be selected by its .770 size alone?
No. The specific Flo-Torq drive-sleeve and hub arrangement is the more important fitment detail.
Is 816629Q interchangeable with 8M0204724?
Not automatically. It is a different Mercury tab-washer configuration. Confirm the exact hardware diagram.
What earlier part does 8M0204724 replace?
It supersedes Mercury part number 8M0042130.
Parts Desk Insights
Best use case: Replacing the specified locking washer during propeller or hub service when the diagram calls for 8M0204724 or superseded 8M0042130.
Most common mistake: Matching by appearance or outside diameter while overlooking the drive-sleeve adapter and hub system.
Fitment guidance: Match the washer to the exact propeller-hardware diagram, gearcase, hub components, and 2-pin Flo-Torq adapter before installation.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 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.