Flexplate Bolts - GM LS 11MM x 1.5 Long 6pk

The Flexplate Bolts – GM LS 11MM x 1.5 Long 6pk by MEZIERE are high-quality fasteners specifically designed for builders performing LS engine conversions and flexplate installations on GM platforms. These bolts are essential for securing the flexplate to the crankshaft flange, ensuring a reliable connection that transfers engine torque to the transmission while accommodating drivetrain vibration and misalignment.

Featuring an 11mm diameter and a length of 1.5 inches, these bolts match the specifications of GM LS engine block crankshaft flange bolt holes and flexplate mounting patterns. The extended length is designed to accommodate thicker flexplate designs, allowing for proper seating without bottoming out in counterbored holes, a common issue with lower-quality fasteners. MEZIERE manufactures these bolts to precise tolerances to withstand repeated stress cycling under high horsepower loads.

Engine swap technicians and high-performance shops trust MEZIERE flexplate bolts for their reliability and performance in every build. This six-piece set simplifies the installation process by providing all necessary bolts, ensuring consistent clamping force across all mounting positions. Proper installation requires following torque specifications, typically 35–40 ft-lbs in a crisscross pattern, to achieve optimal performance.