Mercury Marine — Lockwasher (.375) — 41471
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Mercury Marine Lockwasher (.375) – Part 41471
This genuine OEM lockwasher secures fasteners against vibration loosening on Mercury, MerCruiser, and Quicksilver assemblies. Use it any time the parts diagram calls for part number 41471 to keep torque specs holding through engine operation.
Part Details
- Part number: 41471
- Brand: Mercury Marine / Quicksilver
- Product type: Lockwasher (.375")
- Category: Seals, Gaskets & O-Rings hardware
- Condition: Genuine OEM, new
Compatible Applications
- Fits wherever the Mercury, MerCruiser, or Quicksilver parts diagram calls for part number 41471
- Confirm fitment against your engine or drive's parts diagram and serial number range before ordering, since similar hardware varies by production run
When to Replace
Replace this lockwasher during disassembly, resealing work, or any time the old washer is flattened, deformed, or shows signs it's no longer holding tension.
Installation Notes
Clean the mating surfaces before reassembly and follow the Mercury service manual for orientation, lubrication, and torque sequence on the fastener it secures.
Technical FAQ
Is this washer reusable? Lockwashers are inexpensive and best replaced whenever a fastener is removed, rather than reused.
How do I confirm this is the right size? Match part number 41471 against your Mercury parts diagram for the exact assembly and serial number range.
Parts Desk Insights
This lockwasher is best used any time you're reassembling a Mercury, MerCruiser, or Quicksilver component that calls for part 41471 on the parts diagram. The most common mistake is reusing an old lockwasher instead of installing a new one, which can let a fastener work loose over time. For sizing, always confirm against the exact part number and diagram position rather than fastener size alone, since several similar washers can look alike.
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.