TCI 399753 SFI Flexplate for GM LS-Series, 168-Tooth Steel, Internal Balance

Upgrade the drivetrain of your GM LS-series application with the TCI 399753 SFI Flexplate. Designed for reliable performance in demanding street, strip, and competition environments, this flexplate features a durable steel construction and an internal-balance design suited to compatible GM LS1 and related LS-series engines. Its 168-tooth ring gear supports proper starter engagement and dependable engine cranking when matched with the correct starter and drivetrain components.
The TCI 399753 is built to meet SFI 29.1 requirements, providing a professionally engineered option for applications that require an approved flexplate. The precision-focused design helps maintain consistent power transfer between the engine and automatic transmission while supporting the demands of high-performance use. Verify engine balance, crankshaft configuration, transmission compatibility, and starter engagement before installation.
This TCI flexplate is sold individually and is intended for GM LS-series applications using an internally balanced rotating assembly. Installation should be completed according to the vehicle or transmission manufacturer’s procedures, with all fasteners properly inspected and torqued. For dependable fitment, confirm the application requirements and compare the original flexplate specifications before ordering.

Features:

• Brand: TCI

• Part Number: 399753

• Application: GM LS-series engines, including compatible LS1 applications

• Tooth Count: 168-tooth ring gear

• Material: Durable steel construction

• Balance Type: Internal balance

• Safety Certification: Meets SFI 29.1 requirements

• Quantity: Sold individually