TCI 399755 SFI Flexplate for GM LS9 Engine, 168-Tooth Steel, Internal Balance

The TCI 399755 SFI Flexplate is designed for GM LS9 engines and provides a durable, dependable connection between the engine and automatic transmission torque converter. Built from strong steel and engineered for performance applications, this 168-tooth flexplate supports reliable cranking engagement while helping accommodate the demands of high-output LS-series powertrains. Its internal-balance design is matched to applications that require the appropriate rotating assembly balance configuration.
The TCI 399755 flexplate is SFI 29.1 certified, making it a suitable choice for many racing and competition vehicles where certified drivetrain components are required. The precision tooth ring promotes consistent starter engagement, while the rigid steel construction helps resist distortion under demanding operating conditions. This flexplate is supplied as an individual component for installation with compatible GM LS9 engine and transmission combinations.
Feature: Brand - TCI
Feature: Part number - 399755
Feature: Application - GM LS9 engine
Feature: Tooth count - 168 tooth
Feature: Material - Steel
Feature: Balance - Internal balance
Feature: Certification - SFI 29.1
Feature: Quantity - Sold individually
Verify engine, transmission, starter, torque converter, and balance requirements before installation to ensure compatibility. Proper installation should follow the vehicle manufacturer’s procedures and applicable racing regulations.

Features:

• TCI 399755 flexplate for GM LS9 engines

• 168-tooth design for compatible automatic transmission applications

• Durable steel construction for demanding performance use

• Internal-balance configuration

• SFI 29.1 certified for qualifying competition applications

• Precision tooth ring supports consistent starter engagement

• Sold individually