







⛵ Keep your Mercury running smooth—fuel flow perfected, adventure uninterrupted!
The UANOFCN 8M6000359 Float Fuel Switch Sensor is a precision-engineered replacement part designed for Mercury and Mariner outboard motors ranging from 75 to 300 HP. Made from durable plastic and weighing only 24 grams, it features a barbed connector for easy installation inside the fuel tank. This sensor meets OE specifications, ensuring reliable automatic fuel flow control and compatibility with popular Mercury EFI and Verado 4-stroke engines. Ideal for professionals and boating enthusiasts seeking a seamless, trustworthy fuel system upgrade.












| ASIN | B09F2XMGP9 |
| Auto Part Position | Inside |
| Best Sellers Rank | #447,297 in Automotive ( See Top 100 in Automotive ) #2,885 in Automotive Replacement Electric Fuel Pumps |
| Body Material | Plastic |
| Brand Name | UANOFCN |
| Compatible with Vehicle Type | PWC |
| Connector Type | barbed |
| Customer Reviews | 4.3 4.3 out of 5 stars (65) |
| Fit Type | Vehicle Specific Fit |
| Gas Type | Gasoline |
| Included Components | 1 pc Float Fuel Switch Sensor 8M6000359 |
| Inlet Connection Type | Hose Barb |
| Item Dimensions | 2.95 x 1.38 x 2.2 inches |
| Item Type Name | Mercury Outboard Float |
| Item Weight | 24 Grams |
| Manufacturer | UANOFCN |
| Manufacturer Part Number | 8M6000359 |
| Manufacturer Warranty Description | 30 Days |
| Material Type | Plastic |
| Mounting Type | Tank Mount |
| Operation Mode | Automatic |
| Outlet Connection Type | Barb |
| Part Interchange Info | replacement |
| Product Grade | Replacement Part |
| Product Style | Float Switch |
| Specification Met | OE |
| UPC | 788934570430 |
J**E
Perfect Replacement
This float switch was a perfect replacement on our Mercury 90 Four Stroke. Solved the fuel delivery problems we were experiencing at a reasonable price.
D**N
A simple fix
This is exactly what I needed. I watched a utube video and then I ordered the float . Part showed up in just a few days. Install went great and took the boat out for a trial run , 35 miles and not even a hiccup.
M**J
Float fuel switch sensor
It fits the description on Amazon I will post a video when I install
K**E
Inexpensive
$100 less than anyone else looks to exactly the same
R**N
Perfect fuel tank sensor for the listed engines.
While it is the perfect fuel tank sensor for Mercury/Mariner motors, it is only for the lister motors. It is not for all Mercury motors.
G**E
Many possibilities.
Good working float switch. Uses limited only by your imagination. (and amperage rating, of course)
D**J
Matched my old one
Seems to work fine, fit perfectly in my 90hp mercury outboard.
K**.
So far, so good
The saga of getting this part is crazy! This little part crapped out on our boat in July of 2020. Because of supply chain issues, the part was very difficult to find and then when it did come in it was wired incorrectly. The way it was manufactured meant you would have to destroy it to rewire it. Fast forward...four more switches, months and months of waiting on each one, and almost three years later... I finally got this one. It is still the same part, but made differently now. No longer a solid, poured rubber part you could actually take it apart and rewire it if you had to. Three years of not being fully able to use a very expensive toy was no fun. This little baby has caused a lot of angst to a lot of boaters in May of 2020. Today, I am excited to say that I can now get the boat back in the water and go as far, as fast, and as long as I want!
V**E
Yep well it works! I got stuck on the lake because the float got stuck in high position, meaning the fuel system wouldn’t get any fuel, making the engine starve for fuel. The boat shop wanted 150$ for the part and 3 hours to change it….. I decided to tackle the job. Not a big job by any means, took me about an hour. Went on the lake 5 times since the swap, no trouble at all, perfectly fine. ***information purposes : in my case, the float stuck in the high position (fuel cut, engine starving) but some people might have it stuck in the low position (fuel on, always) that would mean you will have fuel leak around the FSM box (fuel system management)
J**Z
Buen producto, llego antes de lo esperado
D**K
Ours failed and left us on the lake, after bench testing to confirm it was the float switch contacted Mercury for a new switch, over $200 and approx 3 weeks. Needless to say this was a great buy, perfect fit and arrived in 3 days. Spent the rest of the summer on the water not a trailer!
S**N
Was identical part ,marina wanted 215 $ for it !
H**B
Arrived broken
Trustpilot
1 month ago
1 month ago