Hygrade FL4 Carburetor Float

Hygrade FL4 Carburetor Float for Carter 4 Bbl

The Hygrade FL4 is a nitrophyl carburetor float for Carter 4 Bbl applications. It is built for carburetion service on a wide range of Chrysler, Dodge, Ford, Lincoln, and Mercury vehicles with Carter TQ carburetors, including many 1971-1985 truck and passenger car applications.

Key Features

• Nitrophyl construction for carburetor fuel level control
• Designed for Carter 4 Bbl carburetor make and model applications
• Hygrade FL4 part number for direct catalog lookup
• Coverage across many Dodge B-series, D-series, Ramcharger, and Chrysler TQ applications
• Cross-reference: Hygrade Tuneup FL7

Product Details

Hygrade has served the automotive aftermarket since 1919, supplying carburetion parts with broad application coverage. The FL4 carburetor float is specified for Carter 4 Bbl use and is made from nitrophyl, a material commonly selected for stable float performance in fuel systems. This part is listed across numerous Carter TQ-equipped vehicles, including 1984-1985 Dodge B250, B350, D150, D250, D350, Ramcharger, W150, W250, and W350 models, along with earlier Chrysler and Dodge applications from 1971 through 1985. This part cross-references Hygrade Tuneup FL7 for the same application.

Common Problems This Part Can Address

• Incorrect fuel level in a Carter carburetor
• Flooding caused by a worn or saturated float
• Hard starting related to fuel control issues
• Rough idle from unstable carburetor fuel delivery
• Driveability problems on Carter TQ-equipped Dodge and Chrysler vehicles

Installation Notes and Tips

• Verify the carburetor make and model before ordering; this part is for Carter 4 Bbl applications.
• Match your vehicle’s emissions and carburetor code to the listed fitment notes, especially on 1980s Dodge truck and van applications.
• Inspect the float hinge, needle, and seat during service to confirm proper carburetor operation.
• After installation, set float level to the carburetor specification for the exact application.

Quality Assurance

Hygrade positions this part within its long-running carburetion aftermarket coverage, with application support focused on fitment breadth and material selection for service use.