Mercury MerCruiser Quicksilver 90-Amp Fuse Assembly 79023T90
In stock items ship same or next day.
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Product Description
Mercury MerCruiser Quicksilver 88-79023T90 is a 90-amp fuse assembly for specified outboard, sterndrive and inboard electrical systems. The fuse has a 5/16-inch (8 mm) diameter mounting hole and is used where the wiring diagram calls for this high-current protection assembly.
Key Features
- Fuse rating: 90 amps.
- Mounting-hole diameter: 5/16 inch / 8 mm.
- Full catalog number: 88-79023T90.
- Supersedes 88-79023A90.
Product Compatibility
Verified uses include specified MerCruiser starter circuits and Mercury power-trim systems. The Mercury 80/800 four-cylinder power-trim diagram with circuit breaker and fuse lists 79023T90 as the 90-amp fuse assembly. Match the electrical schematic and installed terminal arrangement.
Replacement and Installation
Disconnect battery power before servicing the fuse connection. If the fuse has opened, diagnose the circuit fault before fitting a replacement. Reinstall the specified insulating hardware and protective covers, and use the correct terminal tightening procedure. Do not substitute a higher fuse rating.
Parts Desk Insight
Check both the 90-amp rating and 8 mm mounting hole. A similar-looking fuse with a different rating or terminal arrangement is not the same service part.
Manufacturer Parts Lookup
Use Mercury’s official parts finder to check the part against your engine or drive serial number.
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.