Hygrade 574A Carburetor Repair Kit

Hygrade 574A Carburetor Repair Kit

Restore proper carburetor function with the Hygrade 574A carburetor repair kit for Rochester 4MC and 4MV applications. This direct-fit OE replacement is built for straightforward installation and includes the core service components needed to address common fuel-metering and drivability issues on classic Pontiac vehicles.

Key Features

• Direct-fit OE replacement for Rochester 4 Bbl. carburetors
• Fits Rochester 4MC and 4MV carburetor types
• Accelerator pump included
• Needle and seat included
• Flange base gasket included
• Carburetor-to-air cleaner gasket included
• Fuel inlet gasket included
• Instructions included
• High-quality materials for demanding underhood conditions
• Manufactured under complete quality control and tested for reliability

Detailed Description

The Hygrade 574A is a carburetor repair kit for Rochester 4 Bbl. carburetors used across a wide range of Pontiac applications, including Bonneville, Catalina, Firebird, Grand Prix, GTO, LeMans, Laurentian, Parisienne, Grand Am, and Tempest models from 1968 through 1974. It is listed for Rochester 4MC and 4MV carburetor types and supports service work on vehicles with the specific Rochester carburetor calibrations noted in the fitment data. This part cross-references Monroe Shocks & Struts (e.g., CK252A, 96-208A) for the same application.

Use the Hygrade 574A when servicing a Rochester carburetor that needs fresh sealing surfaces, fuel-metering components, or accelerator pump service. The included gaskets, needle and seat, and accelerator pump help address wear points commonly found in older carburetors, while the OE-style design supports a cleaner rebuild process on classic Pontiac carburetor systems.

What This Kit Helps Solve

• Hard starting caused by worn carburetor sealing components
• Fuel leakage at gasket surfaces or inlet points
• Stumbling or hesitation from a worn accelerator pump
• Rough idle related to needle and seat wear
• Driveability issues after carburetor service on Rochester 4MC/4MV units

Installation Notes and Tips

• Confirm carburetor make and model before ordering; this kit is for Rochester 4 Bbl. carburetors, including 4MC and 4MV.
• Review the included instructions before disassembly and keep track of original linkage and calibration parts.
• Inspect the carburetor body, throttle shaft, and float system for wear before reassembly; float is not included.
• Verify all gasket surfaces are clean and flat to help prevent vacuum leaks and fuel seepage.
• Match the vehicle’s carburetor number against the fitment notes for Pontiac Bonneville, Catalina, Firebird, Grand Prix, GTO, LeMans, Laurentian, Parisienne, Grand Am, and Tempest applications.

Quality Assurance

Hygrade states that this carburetor repair kit is manufactured with quality control maintained throughout the production process and is tested for reliability. The kit is built from materials intended to withstand extreme operating conditions found in automotive use.