Hygrade CV351 Carburetor Choke Thermostat

Carburetor Choke Thermostat for Rochester 4 Bbl

Hygrade CV351 is a carburetor choke thermostat for Rochester 4, 2-barrel carburetors. It is built for direct replacement service on a wide range of Chevrolet, GMC, Buick, Oldsmobile, and Pontiac applications from 1980-1986.

Use this Hygrade CV351 when you need a Rochester 4 Bbl choke thermostat replacement for carbureted GM trucks and passenger cars with the listed Rochester carburetor numbers.

• Carburetor make and model: Rochester 4, 2 Bbl
• Chrome and black finish
• No electric assist
• Direct-fit service part for Rochester carburetor choke control
• Cross-reference: Standard Ignition TH343

Application Details

This part is used on Rochester-equipped Chevrolet C20, C30, K30, and P30 models, GMC C2500, C3500, K3500, and P3500 models, plus Buick, Oldsmobile, and Pontiac vehicles listed in the fitment data. It is a practical replacement for owners searching for a Rochester carburetor choke thermostat for 1980-1986 GM carbureted applications.

Fits 1985-1986 Chevrolet C20, N/A; Fits 1985-1986 Chevrolet C20 Suburban, N/A; Fits 1985-1986 Chevrolet C30, N/A; Fits 1985-1986 Chevrolet K30, N/A; Fits 1985-1986 Chevrolet P30, N/A; Fits 1985-1986 GMC C2500, N/A; Fits 1985-1986 GMC C2500 Suburban, N/A; Fits 1985-1986 GMC C3500, N/A; Fits 1985-1986 GMC K3500, N/A; Fits 1985-1986 GMC P3500, N/A.

What It Helps Address

• Hard starting when the choke does not regulate correctly
• Rough cold idle on Rochester carbureted engines
• Stalling during warm-up
• Choke plates that stay too rich or too lean
• Driveability issues tied to worn choke thermostat operation

Installation Notes and Tips

Verify the Rochester carburetor number before ordering, since fitment depends on the carburetor family and emissions calibration. Confirm the vehicle year, make, model, and carburetor identification against the listed applications, including Rochester M4MC, M4ME, and related numbers shown in the fitment data.

Quality Assurance

Hygrade has served the automotive aftermarket since 1919 and focuses on carburetion coverage and replacement quality. CV351 is supplied as a carburetor choke thermostat replacement for the listed GM Rochester applications.