Hygrade FL31 Carburetor Float

Hygrade FL31 Carburetor Float for Aisan 2 Bbl

The Hygrade FL31 is a nitrophyl carburetor float for Aisan 2 Bbl carburetors used across a wide range of Toyota applications. It is built for Toyota Land Cruiser, Corolla, Celica, Corona, and Pickup models that use the specified Aisan carburetor setups.

Key Features

• Nitrophyl float material for carburetor fuel level control
• Designed for Aisan 2 Bbl carburetors
• Direct application coverage for multiple Toyota carbureted engines
• Hygrade FL31 part number for easy identification
• Cross-references 2-499 and CF503B for the same application

Application Details

Hygrade has served the automotive aftermarket since 1919, supplying carburetion parts with broad coverage for repair and restoration work. The FL31 carburetor float is specified for Aisan 2 Bbl carburetors and is used on many Toyota vehicles from 1968 through 1987, including Toyota Land Cruiser, Corolla, Celica, Corona, and Pickup models. This part number, FL31, is a practical choice when replacing a worn or fuel-logged float in an Aisan carburetor.

What This Part Helps Address

• Incorrect fuel level inside the carburetor bowl
• Flooding caused by a saturated or damaged float
• Hard starting related to fuel control issues
• Rough idle from unstable carburetor fuel metering
• Stalling or hesitation tied to float malfunction

Installation Notes and Tips

Verify the carburetor make and model before ordering: this float is for Aisan 2 Bbl units. Confirm the carburetor identification and matching Toyota application details, especially on older Land Cruiser, Corolla, Celica, Corona, and Pickup vehicles. During installation, inspect the float hinge, needle, and seat for wear and check float height to factory specification after assembly.

Quality Assurance

Hygrade is an established aftermarket manufacturer with a long history in carburetion parts, supporting coverage for classic Toyota fuel systems. The FL31 is made to meet the needs of repair and restoration work where accurate carburetor fuel control is required.