Flex Plate Bolt Kit - 1/2-20 x 1in (8pk)

The MEZIERE Flex Plate Bolt Kit—1/2-20 x 1 inch, 8-pack—is a precision fastener set engineered for high-performance engine applications where flexplate integrity is critical. These bolts feature 12-point heads machined from chromoly steel and finished in black oxide, delivering corrosion resistance and the mechanical strength required to secure a flexplate under dynamic loads. The 1/2-20 thread specification and 1-inch length match OEM standards for most domestic V8 and high-displacement applications, making this kit an essential replacement or upgrade component for engine builders, transmission specialists, and serious powersports enthusiasts.

Chromoly construction provides superior tensile strength compared to standard steel, critical when managing the rotational forces between crankshaft and transmission. The 12-point head geometry allows for higher torque application with reduced risk of fastener rounding—a practical advantage during installation and future service intervals. Black oxide coating resists surface corrosion without the brittleness sometimes associated with heavy plating, maintaining fastener reliability in engine bay environments exposed to heat cycling and moisture. The eight-piece count covers a standard flexplate fastening pattern, eliminating the need to source individual bolts from multiple suppliers.

This kit is specified for engine rebuilds, transmission swaps, and powersports applications where factory fastener replacement is necessary. Whether rebuilding a carburetor-fed small-block or modernizing a classic engine bay, having a verified, high-strength fastener set eliminates guesswork and potential drivetrain failure from substandard hardware. MEZIERE is recognized within the engine building and performance transmission community for manufacturing precision components that meet or exceed OEM specifications, making this bolt kit a reliable choice for demanding mechanical work.