Pro Series Flexplate SFI 29.1 88-09 5.9L

The Pro Series Flexplate SFI 29.1 88-09 5.9L is a heavy-duty flexplate engineered for Dodge diesel and gas engines requiring SFI 29.1 certification for drag racing and high-performance applications. This component serves as the critical interface between your transmission and engine's crankshaft, absorbing rotational forces while maintaining precise alignment under extreme torque loads. Whether you're building a competition truck, upgrading a street machine, or restoring a classic fifth-generation Cummins, a quality flexplate is non-negotiable for reliability and safety.

PRW Industries manufactures this flexplate to SFI 29.1 specifications, meeting the sanctioning body's stringent safety standards for high-horsepower engine combinations. The flexplate's design incorporates balanced geometry and precision-machined surfaces to handle sustained power delivery without cracking or fatigue failure—critical factors when running increased boost, nitrous, or aggressive tuning on 5.9L platforms. At 10.55 pounds, it delivers the structural integrity necessary for forced-induction builds while maintaining compatibility with stock and aftermarket transmission bell housings. The flexplate's composite material construction provides superior damping compared to steel alternatives, reducing drivetrain harmonics and transmission input shaft stress.

This flexplate fits 1988–2009 model year 5.9L Dodge engines, including Cummins diesel and Magnum gas variants, making it essential for anyone upgrading transmission internals, replacing failed flexplates, or transitioning to modern automatic gearboxes. Installation requires engine block access and careful torque specification to prevent bearing preload issues; consult your service manual or have a qualified diesel or Mopar specialist handle fitment. The SFI 29.1 certification ensures acceptance at sanctioned drag strips and racing events, protecting your investment in engine modifications while maintaining legal and insurance compliance for high-output vehicles.