Flexplate SFI Mopar 5.7L/6.1L Hemi

The ATI Performance Flexplate SFI Mopar 5.7L/6.1L Hemi (part number 915685) is a purpose-built flexplate engineered to handle the high torque output of modern Hemi engines. Designed specifically for Mopar Gen III Hemi platforms, this SFI 29.1-certified steel flexplate delivers the strength and precision required for both street and performance applications where reliable power transmission is non-negotiable.

This flexplate features internal balance design, meaning the rotating assembly counterweight is integrated into the component itself rather than requiring external balancing. Steel construction provides superior durability and heat resistance compared to aluminum alternatives, critical for engines producing substantial torque loads. The SFI 29.1 certification ensures the flexplate meets strict automotive performance standards for crankshaft and transmission compatibility, delivering peace of mind for drivers who demand reliability under sustained power delivery or aggressive driving conditions.

This component is engineered for owners of 5.7L and 6.1L Hemi-equipped vehicles—including Dodge, Chrysler, and Jeep platforms—seeking to maintain or upgrade their drivetrain integrity. Whether replacing a worn OEM flexplate, building a performance engine, or assembling a crate motor installation, this ATI unit provides proven fitment and durability. The internal balance configuration ensures compatibility with balanced rotating assemblies common to modern Hemi builds, eliminating the need for external weight additions.

ATI Performance is recognized in the automotive industry for manufacturing high-strength drivetrain components. The Flexplate SFI Mopar 5.7L/6.1L Hemi represents the brand's commitment to engineering flexplates that withstand the demands of both daily driving and elevated performance scenarios where traditional components may fall short.