Hygrade CV204 Carburetor Choke Thermostat

Carburetor Choke Thermostat for GM Applications

The Hygrade CV204 carburetor choke thermostat is a GM-style replacement for Rochester and Holley carburetor applications listed below. It is built for vehicles that rely on a remote choke setup and does not use electric assist.

• Carburetor choke thermostat for GM carburetion systems
• GM carburetor make and model application
• No electric assist
• Direct-fit coverage for select Rochester Carb and Holley Carb applications
• Cross-reference part number: 2-333

Application Details

Use the Hygrade CV204 when servicing choke thermostat systems on classic Chevrolet and GMC trucks, vans, and utility models with Rochester 4MV or M4ME carburetors, plus select 1977 Oldsmobile Starfire Holley 5210 applications. This part number is listed across 1976-1979 model years and is referenced for vehicles such as Chevrolet C10, K10, El Camino, GMC Jimmy, and related platforms. The CV204 is a practical replacement for maintaining proper cold-start choke operation on GM carbureted engines.

This part cross-references Monroe Shocks & Struts (e.g., 2C1104) for the same application.

What It Helps Address

• Hard cold starts caused by choke thermostat wear
• Choke plates that stay closed too long or open too early
• Rough idle during warm-up on Rochester carburetor systems
• Driveability issues tied to incorrect choke response
• Restoration needs for GM carbureted vehicles

Installation Notes and Tips

Verify the carburetor make and model before installation. This CV204 is listed for GM applications with Rochester Carb remote choke 4MV and M4ME setups, and select Holley 5210 listings. Confirm the original part number and match the vehicle-specific notes, especially on 1976-1979 Chevrolet and GMC applications.

• Compatible with listed Chevrolet C10, C20, C30, K10, K20, K30, El Camino, and GMC Jimmy applications
• Check for remote choke configuration before ordering
• Confirm carburetor identification against the notes in the fitment list

Quality Assurance

Hygrade has served the automotive aftermarket since 1919 and focuses on carburetion coverage for classic vehicle service needs. The CV204 is part of that legacy of GM carburetor replacement components.