# 8M6000359 Mercury MerCruiser Float | Genuine Quicksilver OEM Part

🔧 Product Description

  

Genuine Quicksilver Fuel Supply Module Float - Part Number: 8M6000359

  

A genuine Quicksilver fuel-level float for selected Mercury four-stroke fuel supply modules.

  

The float moves with the fuel level inside the module and operates the associated valve or level-control mechanism. Correct float operation maintains the intended fuel level around the electric fuel pumps and helps prevent flooding or fuel starvation.

  

⚙️ Key Features

  

• Genuine Quicksilver OEM fuel-module float

• Correct Mercury part number 8M6000359

• Used inside selected Mercury fuel supply modules

• Replaces earlier 880596 and 8M0007943 references

• Aftermarket replacement floats available

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 8M6000359 → Supersedes 8M0007943

• 8M0007943 → Supersedes 880596524

• 880596524 → Supersedes 880596522

• 880596522 earlier OEM float reference

  

OEM / Related Numbers:

  

• 8M6000359

• 8M0007943

• 880596524

• 880596522

• Fuel supply module float

• FSM float

  

Aftermarket / Verified Equivalents:

  

• Uanofcn: 8M6000359 replacement float

• Aftermarket: 8M0007943 / 880596524 replacement float

• Aftermarket: 880596522 fuel-module float

  

🚤 Compatibility

  

Commonly used on:

  

• Mercury EFI four-stroke fuel supply modules

• Mercury Verado fuel supply modules

  

Typically suits:

  

• Engine models:

• Mercury 75HP EFI four-stroke

• Mercury 80HP EFI four-stroke

• Mercury 90HP EFI four-stroke

• Mercury 100HP EFI four-stroke

• Mercury 115HP EFI four-stroke

• Mercury Verado 135HP L4

• Mercury Verado 150HP L4

• Mercury Verado 175HP L4

• Mercury Verado 200HP L4 and L6

• Mercury Verado 225HP L6

• Mercury Verado 250HP L6

• Mercury Verado 275HP L6

• Mercury Verado 300HP L6

• Fuel supply modules using float 8M6000359 or earlier references 8M0007943 / 880596524

  

• HP Range: 75HP - 300HP

• Engine Type: Mercury EFI and Verado four-stroke outboard

• Year Range: Approximately 2005 onward, dependent on fuel-module design

  

🔌 Function

  

The float controls fuel level inside the fuel supply module so the high-pressure pumps receive a consistent fuel supply without the module overfilling.

  

Common signs of failure:

  

• Engine stalls from fuel starvation

• Fuel supply module overfills

• Hard starting after the engine has been parked

• Fuel leaks or strong fuel odour

• Float absorbs fuel, sticks or no longer moves freely

  

📦 Condition

  

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 159.45 AUD
- **Vendor:** Quicksilver
- **Tags:** Quicksilver Marine Parts | Oils Service Kits & Engine Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 159.45 AUD | In stock |

## Images

- 8M6000359 Mercury MerCruiser Float | Genuine Quicksilver OEM Part

---

> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/8m6000359-mercury-mercruiser-float-genuine-quicksilver-oem-part)
> Updated: 2026-07-18