Flywheel Bolt Kit Bert / Brinn

The Quarter Master Flywheel Bolt Kit for Bert/Brinn high-performance automatic transmissions delivers OEM-quality fastening for engine-to-flexplate assembly in Chevy, Dodge, and Ford platforms. This six-piece chromoly bolt set features 7/16-20 inch threads, 1.260 inch length, and 12-point socket heads finished in black oxide—engineered for the precise torque specifications and clamping force required in power transmission applications where bolt stretch and reliability directly impact driveline integrity.

Chromoly construction provides superior tensile strength compared to standard steel, critical for high-output engines and transmission builds where stock fasteners may yield under load. The 12-point head geometry enables rapid installation and removal with both metric and SAE socket sizes, while black oxide coating resists corrosion in engine bay environments. Each bolt is individually precision-machined to specification, ensuring uniform preload across the flexplate mounting surface and eliminating the common failure point of mismatched fastener lengths that cause vibration and premature wear.

This kit addresses a critical need in street, strip, and off-road engine builds where OEM fasteners are insufficient. Transmission builders, performance shops, and serious enthusiasts rebuilding or upgrading Bert and Brinn transmissions on domestically powered platforms rely on quality bolt kits to maintain clamp load consistency throughout the duty cycle. The complete set of six bolts eliminates mixed hardware and ensures repeatable torque specifications—essential for engines producing elevated horsepower or frequent high-load cycles.