TCI 399754 SFI Flexplate for GM LS-Series and 4L80E, 168-Tooth Steel, Internal Balance

The TCI 399754 SFI Flexplate is designed for GM LS-Series engines paired with a GM 4L80E transmission. Constructed from durable steel, this 168-tooth flexplate provides a dependable connection between the engine crankshaft and torque converter for performance, racing, and high-demand drivetrain applications. Its internal-balance design is intended for compatible internally balanced engine assemblies.
The flexplate is manufactured to meet SFI 29.1 specifications, supporting applications where certified drivetrain components are required. The wide converter bolt pattern helps provide compatibility with the specified torque converter configuration, while the precision-machined design promotes proper engagement with the starter and consistent rotational performance. Verify engine balance, crankshaft configuration, transmission fitment, and converter bolt pattern before installation.
TCI is recognized for producing performance drivetrain components engineered for demanding automotive applications. This TCI 399754 flexplate is supplied as an individual component and is intended for installation by a qualified technician using the correct fasteners, torque specifications, and alignment procedures. It is not air restricted and does not require truck freight shipping.

Features:

• Brand: TCI

• Part Number: 399754

• Tooth Count: 168-tooth design

• Material: Durable steel construction

• Safety Certification: Meets SFI 29.1 specifications

• Balance Type: Internal balance

• Transmission Compatibility: Designed for GM 4L80E transmissions

• Engine Compatibility: GM LS-Series applications

• Converter Pattern: Wide converter bolt pattern

• Quantity: Each