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Sierra Mercury Carburetor Float
Replacement WME Carb Float for Mercury & Mariner 2-Stroke Outboards
This Sierra 18-72000 carburetor float replaces Mercury / Quicksilver OEM part number 1395-9594.
The float is used inside compatible Mercury and Mariner WME carburetors to regulate fuel level within the carburetor bowl for proper fuel metering and dependable engine performance.
Compatible Applications
| Engine Range | Engine Type | Carburetor Family | Application Notes |
|---|---|---|---|
| Mercury / Mariner 30HP-40HP | 2-Stroke | WME Carburetors | Select 2-cylinder carbureted models using float 1395-9594 |
| Mercury / Mariner 50HP-75HP | 2-Stroke | WME Carburetors | Select 3-cylinder carburetor assemblies using compatible WME carburetors |
| Mercury / Mariner 80HP-125HP | 2-Stroke | WME Carburetors | Select 3-cylinder and 4-cylinder carbureted applications |
| Mercury XR / Sea Pro Models | 2-Stroke | WME Carburetors | Used in select commercial and performance carbureted outboards |
A damaged or fuel-soaked float may cause flooding, rich-running conditions, fuel leakage, hard starting, poor idle quality, or hesitation during acceleration.
Mercury used several WME carburetor variations across the 30HP-125HP range. Always verify your engine serial number and carburetor number before ordering carburetor components.
OEM Part Numbers & Cross References
| Reference Type | Part Number |
|---|---|
| Sierra | 18-72000 |
| Mercury / Quicksilver OEM | 1395-9594 |
| Alternate Search Format | 13959594 |
OEM Mercury Float Option
Looking for the OEM Mercury / Quicksilver carburetor float?
See the OEM Mercury 1395-9594 Carburetor Float .
Related Carburetor Repair Kit
This carburetor float is commonly used with the following carburetor rebuild kit:
Sierra 7211-1 Carburetor Kit with Needle
What a Carburetor Float Does
The carburetor float works together with the needle and seat assembly to maintain proper fuel level inside the carburetor bowl.
Maintaining the correct fuel level helps provide stable idle, clean throttle response, proper fuel delivery, and reliable engine operation.
Over time, carburetor floats may absorb fuel, crack, stick, or lose buoyancy, causing flooding or inconsistent fuel delivery.
Replacing worn carburetor floats during carburetor rebuild service helps restore reliable fuel system performance.
Features and Benefits
- Sierra aftermarket carburetor float
- Replaces Mercury / Quicksilver OEM 1395-9594
- Fits select Mercury and Mariner 30-125HP 2-stroke outboards
- Compatible with many WME carburetor applications
- Helps maintain proper carburetor fuel level
- Useful for flooding and fuel delivery repairs
- Common replacement during carburetor rebuild service
- Aftermarket alternative to OEM Mercury carburetor floats
Carburetor Float Details
- Brand: Sierra
- Part Number: 18-72000
- Part Type: Carburetor Float
- Replaces OEM: Mercury 1395-9594
- Application: Mercury / Mariner 2-Stroke Carburetors
- Horsepower Range: 30HP-125HP
- Carburetor Family: WME
- System: Fuel / Carburetor
- Quantity Sold: Each
FAQ
What does Sierra 18-72000 replace?
This float replaces Mercury / Quicksilver OEM carburetor float 1395-9594.
What outboards use this carburetor float?
This float fits select Mercury and Mariner carbureted 2-stroke outboards from approximately 30HP through 125HP.
What carburetors use this float?
It is commonly used in compatible WME carburetor applications.
What happens if a carburetor float fails?
A damaged float may cause flooding, fuel leakage, poor idle quality, rich-running conditions, or hard starting.
Is this the same float used in the Sierra carburetor kit?
Yes. This float is commonly associated with the Sierra 7211-1 carburetor repair kit with needle.
Should I verify the carburetor model before ordering?
Yes. Mercury used several WME carburetor variations across these horsepower ranges, so carburetor number verification is recommended.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1–5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Fuel system components should be installed only after confirming correct fitment.
- Items must be new, unused, and in original packaging.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Terms
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