KIBBLEWHITE Cylinder Stud - M8 - 8-Pack 20-21040

Cylinder studs are critical fasteners that secure your cylinder head to the block—and substandard hardware can lead to blown gaskets, coolant leaks, and catastrophic engine failure. KIBBLEWHITE cylinder studs eliminate weak points through precision manufacturing and superior material handling, ensuring reliable clamping force under extreme combustion pressures. Whether you're building a street engine or prepping for competition, these studs deliver the consistency and durability your build deserves.

Each stud in this 8-pack is ground to remove surface imperfections and notch sensitivity, then finished with a precision radius at the last thread to prevent stress concentration failures. The rolled threads are formed under hydraulic pressure, maximizing tensile strength and thread integrity compared to cut threads.

• M8 diameter fastener
• 8-pack quantity
• Fully ground surface
• Hydraulically rolled threads
• Radius-finished thread tip
• Notch sensitivity removed
• U.S.A. manufactured
• OEM replacement grade