Mercury MerCruiser Carburetor Float 91691
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Genuine MerCruiser OEM float engineered for precision fit and reliable fuel level control in marine engine fuel systems. This factory-specification component provides accurate fuel metering, proper carburetor operation, and long-term durability in demanding marine environments.
Key Features:
- Genuine MerCruiser OEM replacement part - factory quality and fit
- Precision-manufactured to exact specifications for proper fuel level control
- Marine-grade material engineered to resist fuel and saltwater exposure
- Designed to maintain proper buoyancy and fuel level throughout service life
- Lightweight construction for accurate fuel level sensing
- Factory-tested for dimensional accuracy and material compatibility
- Essential component for proper carburetor fuel metering
- Direct replacement for worn, damaged, or fuel-saturated floats
Technical Specifications:
- Part Number: 91691
- Application: MerCruiser Marine Engine Fuel Systems
- Type: Carburetor float
- OEM Quality: Factory specification
Function and Importance:
The carburetor float is a critical fuel metering component that controls fuel level in the carburetor bowl. It rises and falls with fuel level, operating a needle valve that regulates fuel flow into the bowl. Proper float operation ensures correct fuel level for optimal air-fuel mixture, smooth engine operation, and reliable performance. The float must maintain proper buoyancy and dimensional stability to provide accurate fuel level control. Worn or fuel-saturated floats can cause incorrect fuel levels, leading to rich or lean running conditions, poor performance, flooding, or fuel starvation.
Maintenance and Replacement:
Inspect the float during carburetor service for fuel saturation, damage, or deformation. Check for proper buoyancy by testing in fuel - the float should not sink or become heavy. Replace floats if they show signs of fuel absorption, cracking, deformation, or if fuel level is incorrect despite proper adjustment. Always use genuine OEM floats to ensure proper material specifications, buoyancy characteristics, and dimensional accuracy. Follow factory procedures for float level adjustment and verification.
Compatibility:
Designed for specific MerCruiser carburetor applications. Verify part number compatibility with your engine model and serial number before ordering. Consult factory service manuals or authorized dealers for application-specific fitment information, float level specifications, and adjustment procedures.
Shipping: 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.