Flexplate 168T SFI LS

The Flexplate 168T SFI LS is a critical internal engine component engineered for LS-platform vehicles running automatic transmissions. As a seasoned mechanic, you know that a flexplate serves as the vital mechanical bridge between your engine and transmission—converting engine torque while accommodating slight misalignment. This 168-tooth design is purpose-built for LS-series engines and delivers the durability demanded by street performance, drag racing, and high-output builds where reliability under load is non-negotiable.

Built by ALLSTAR PERFORMANCE and SFI-certified, this flexplate features precise 168-tooth geometry that ensures clean, repeatable starter engagement and minimizes potential harmonic imbalances in performance applications. The SFI standard certification confirms it meets safety standards for high-RPM duty, a critical requirement if your build ever sees track time or forced induction. At 6.91 lbs, the compact 14.75-inch diameter fits within LS engine bay constraints while maintaining the strength needed to transmit power without flex or failure. The balanced construction reduces vibration and unwanted resonance—factors that matter when you're running tight tolerances and chasing reliable power delivery.

Whether you're rebuilding a performance LS swap, upgrading to a higher-stall torque converter, or reinforcing an existing drivetrain, the Flexplate 168T SFI LS is essential for any automatic-transmission LS platform—from mild street engines to serious supercharged or turbocharged applications. Fitment is direct for any LS engine paired with an automatic gearbox, making installation straightforward during transmission service or full engine assembly. This is a wear item you should never compromise on; proper flexplate selection prevents costly transmission damage and ensures consistent engine-to-trans coupling for years of reliable operation.