PRW INDUSTRIES INC. 1845507 PRW Industries 1845507 Sportsman SFI 29.1 Chromoly Flexplate for Buick 403-455, 166-Tooth

Upgrade the drivetrain of your Buick-powered performance vehicle with the PRW Industries Sportsman Series Flexplate, part number 1845507. Designed for Buick 403-455 big-block applications, this 166-tooth flexplate provides a dependable connection between the engine crankshaft and automatic transmission torque converter. It is sold individually and is engineered for performance-oriented street, strip, and competition builds where strength and certification are important.
The flexplate is manufactured from chromoly steel to deliver enhanced durability under demanding operating conditions. Its robust construction helps resist flexing and fatigue caused by high engine speeds, increased torque, and repeated acceleration. The Sportsman Series design is well suited for enthusiasts seeking a reliable replacement or an upgrade over a standard factory flexplate while maintaining compatibility with the specified Buick application range.
PRW Industries part number 1845507 carries an SFI 29.1 rating, making it appropriate for applications that require a certified flexplate for organized racing or other performance environments. Proper installation should include verifying crankshaft, torque converter, starter, and transmission compatibility before assembly. Always follow the vehicle and transmission manufacturer’s installation procedures, use the correct fasteners, and inspect related drivetrain components during installation.
This PRW Industries flexplate combines application-specific fitment, chromoly construction, and SFI certification in one performance-focused component. The 166-tooth configuration is intended for Buick 403-455 engines, helping simplify selection when replacing a damaged flexplate or preparing a high-performance automatic transmission setup.

Features:

• Application: Designed for Buick 403-455 big-block engines with compatible automatic transmission applications

• Tooth Count: 166-tooth configuration for the specified Buick drivetrain setup

• Material: Durable chromoly steel construction for demanding performance use

• Certification: SFI 29.1 rated for qualifying racing and competition applications

• Series: PRW Industries Sportsman Series flexplate, sold individually