Quicksilver Screw 8M0214921
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You have 30 days to request a return. All sale items are final sale.
OEM Screw for Mercury & MerCruiser Assemblies
This genuine Quicksilver screw is a precision fastener used across Mercury outboard and MerCruiser sterndrive engine and drive assemblies. Small hardware like this is often overlooked during service — but using the correct OEM screw with the right thread pitch, length, and material is essential for maintaining proper clamping force and corrosion resistance in a marine environment.
Key Specifications
- Part Number: 8M0214921
- Type: Screw
- Genuine OEM — not aftermarket
- Weight: 0.5 oz
Common Applications
Use this screw wherever the Mercury or MerCruiser parts diagram specifies part number 8M0214921. It appears across multiple engine families and drive configurations — always verify against your model's current parts diagram, serial number, and assembly location before ordering.
When to Replace
Replace any time the screw shows signs of corrosion, thread damage, rounding, or deformation, or whenever it is removed from a critical fastened joint during service. Reusing compromised fasteners risks joint failure under load.
Installation Notes
Compare thread pitch, length, and diameter against the parts diagram before installation. Follow the Mercury service manual for the correct torque specification, locking compound requirements, and fastener reuse limits for the assembly you're working on.
Related Hardware
Parts Desk Insights
Best use case: Direct OEM replacement during engine, drive, or powerhead service where the parts diagram calls for 8M0214921. This is a common service item on MerCruiser sterndrive and Mercury outboard assemblies — always order by the exact part number shown in your diagram. Thread pitch and length matter: a visually similar screw from a hardware store may not meet the material or dimensional spec required for a marine application. If your assembly has been repowered or updated, cross-reference the current diagram to confirm this number hasn't been superseded.
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.