![BPP399173 SFI-Approved Flexplate for Small Block Chevy and Big Block Chevy Engines [153 Tooth]](https://www.jegs.com/images/mini_750/100/138/138-bpp399173.jpg)
BPP399173 SFI-Approved Flexplate for Small Block Chevy and Big Block Chevy Engines [153 Tooth]
BluePrint Engines BPP399173 SFI-Approved Flexplate Features
- Crankshaft to Flexplate Bolt Quantity: 6-bolt
- Flexplate Diameter(in): 12.75
- Converter Bolt Circle: 10.750 in.
Precision-Balanced Components for Smooth, Reliable Engine Dynamics
Blueprint Engines Harmonic Balancers, Flexplates, and Flywheels combine the brand’s engineering heritage with quality manufacturing to deliver critical rotating assembly components designed for consistent balance, durability, and dependable operation. Engineered with precision machining and strict tolerances, these parts help reduce vibration, support proper crankshaft dynamics, and provide confident engagement between the engine and drivetrain. With a focus on accurate fitment, proven materials, and real-world reliability, Blueprint Engines balancers, flexplates, and flywheels offer builders a trusted foundation for smooth performance, long-term durability, and balanced power delivery across a wide range of restoration and performance builds.