2.5in Carb Mount. Studs

The CANTON 2.5in Carburetor Mount Studs (MPN 85-520) are precision-engineered fasteners designed to secure carburetor assemblies to engine manifolds with reliable clamping force and repeatable torque control. This four-piece stud set features 5/16-18 inch threading with matched hex nuts, delivering the mechanical consistency required for proper carburetor sealing and alignment in both street and competition engine builds.

Each stud measures 2.5 inches in length, a specification engineered to bridge the typical manifold flange-to-carburetor base distance in conventional four-barrel applications. The 5/16-18 UNC thread pattern is the industry standard for carburetor mounting, ensuring compatibility with factory and aftermarket carburetors across generations. Stainless steel construction resists corrosion from fuel vapors and engine bay moisture, critical for maintaining fastener integrity during extended storage or salt-air exposure. The included hex nuts allow even load distribution and permit secure installation without specialized tools.

Carburetor stud failures—typically from vibration loosening, corrosion, or undersized fasteners—can lead to vacuum leaks, fuel seepage, and drivability issues. Serious engine builders and restoration shops specify dedicated carburetor studs rather than generic bolts to ensure repeatable assembly, controlled preload, and long-term reliability. The CANTON 85-520 set provides the redundancy and precision needed for critical engine work, whether rebuilding a classic muscle car, preparing a race engine, or restoring a vintage carburetor system.