Professional Products 91003 Harmonic Balancer Counterweight for Small Block Chevy 400

The Professional Products 91003 Harmonic Balancer Counterweight is designed for Small Block Chevy 400 applications requiring an externally balanced harmonic balancer setup. This bolt-on counterweight helps provide the proper balance correction needed for compatible engine combinations, supporting smoother crankshaft operation and dependable performance.
Constructed from durable steel, the counterweight is finished with a zinc oxide coating to help resist corrosion during installation and service. Its bolt-on design allows straightforward attachment to the appropriate Professional Products harmonic balancer, while the included hardware helps simplify installation and ensures the necessary fastening components are supplied.
This Professional Products counterweight is intended for use with compatible Small Block Chevy 400 harmonic balancers. Verify balancer compatibility, engine balance requirements, and installation procedures before installation. As a purpose-built replacement or setup component, the 91003 counterweight is a practical choice for engine builders, restoration projects, and performance applications that require accurate external balancing.

Features:

• Bolt-on counterweight design for compatible harmonic balancers

• Designed for Small Block Chevy 400 applications

• Durable steel construction

• Zinc oxide finish helps resist corrosion

• Hardware included for installation

• Manufactured by Professional Products

• Part number 91003