Mercury Marine Fuse Assembly 110 Amp 79023T10
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Mercury Marine Quicksilver 79023T10 is a genuine OEM 110 amp fuse assembly used in select Mercury and MerCruiser electrical systems. This fuse assembly helps protect high-current electrical circuits from overload and is typically installed in the engine or drive electrical harness where Mercury specifies a 110A protection device.
Key Features
- Genuine Mercury Marine / Quicksilver OEM electrical component.
- Part number 79023T10.
- 110 amp fuse assembly.
- Used for high-current circuit protection in compatible Mercury and MerCruiser applications.
- Helps protect wiring and electrical components from overload conditions.
- Commonly associated with main engine, charging, starter, trim, or harness-related electrical protection points where specified by the parts diagram.
- OEM assembly designed to match Mercury electrical system requirements.
- Should be matched by exact part number and diagram callout, not by amperage alone.
Engine Compatibility
This is an electrical-system service part, not a universal engine-size part. The strongest supportable fitment is by the exact Mercury / MerCruiser engine serial number, electrical harness diagram, and fuse location.
Commonly associated applications may include select:
- Mercury outboard electrical systems
- Mercury Verado electrical systems
- Mercury Optimax / EFI electrical systems
- MerCruiser engine electrical harness applications
- High-current marine electrical protection circuits where 79023T10 is specified
Because fuse assemblies vary by harness, amperage, mounting style, and circuit function, the correct Mercury parts diagram should be checked before ordering.
Serial Number Fitment Notice
Verify fitment by exact engine serial number and the correct Mercury electrical / harness / fuse assembly parts diagram before ordering. A fuse with the same amperage may not have the same housing, terminals, lead style, mounting method, or harness connection.
When This Part Needs Replacement
Replace this fuse assembly when the original fuse is blown, heat-damaged, corroded, physically cracked, loose, or no longer provides reliable circuit protection. If a 110A fuse has failed, the underlying electrical issue should be diagnosed before replacement so the new fuse is not damaged again.
Installation Notes
Disconnect battery power before servicing high-current electrical components. Confirm the correct fuse location, inspect the surrounding wiring and terminals for heat damage or corrosion, and repair any electrical fault before installing the replacement fuse assembly. Use the correct OEM amperage only; do not bypass the fuse or substitute a higher-rated part.
Alternate / Superseded Part Numbers
The active Mercury OEM part number for this listing is 79023T10.
Related references may appear with Mercury prefix formatting, including:
- 79023T10
- 88-79023T10
Parts Desk Insight
The important check with a fuse assembly is why the original fuse failed. Replacing the fuse alone may restore power temporarily, but a repeated failure usually points to a wiring, charging, trim, starter, or harness issue that should be corrected before the boat goes back into service.
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.