Hygrade FM728D Carburetor Power Valve

Hygrade FM728D Carburetor Power Valve Overview

The Hygrade FM728D carburetor power valve is designed for Holley 2 and 4 barrel carburetors, including models 2300, 4150, 4160, 4165, and 4175. This power valve is engineered to regulate fuel flow efficiently, ensuring optimal engine performance across a range of classic and modern vehicles.

• Compatible with Holley 2 and 4 bbl carburetors
• Fits Holley carburetor models 2300, 4150, 4160, 4165, and 4175
• Designed for use in various makes including Buick, Chevrolet, Ford, and more
• Part number FM728D for precise identification
• Supports fuel delivery optimization under varying engine loads

Detailed Product Description

The Hygrade FM728D power valve is a critical component for maintaining proper fuel mixture in carbureted engines equipped with Holley carburetors. By responding to engine vacuum changes, it adjusts fuel flow to prevent lean conditions during acceleration or heavy load. This part is compatible with a wide range of vehicles such as Chevrolet Camaro, Ford Mustang, Pontiac GTO, and Chrysler Challenger, among others. The FM728D is specifically designed to fit Holley carburetor models 2300, 4150, 4160, 4165, and 4175, making it a versatile choice for restoration or maintenance projects involving classic and muscle cars.

Applications and Problem Solving

• Prevents engine hesitation during acceleration
• Helps avoid lean fuel mixtures that can cause engine damage
• Improves throttle response in Holley-equipped vehicles
• Supports consistent fuel delivery in varying driving conditions
• Compatible with multiple makes including Buick, Lincoln, and Oldsmobile

Installation Notes and Tips

When installing the Hygrade FM728D power valve, ensure the carburetor model matches one of the supported Holley types (2300, 4150, 4160, 4165, 4175). Properly seat the valve to avoid vacuum leaks and verify the engine vacuum source is clean and unobstructed. It is recommended to consult the vehicle’s service manual for specific torque specifications and installation procedures to maintain optimal carburetor performance.

Quality Assurance and Warranty

Hygrade manufactures the FM728D power valve to meet industry standards for durability and performance. While specific warranty details are not provided, Hygrade products typically undergo quality control testing to ensure reliable operation in automotive applications. For additional warranty information, refer to Hygrade’s official documentation or contact the manufacturer directly.