Rear Alternator Block Mount

The Rear Alternator Block Mount from Jones Racing Products is a precision-engineered support bracket designed for small block Chevy engine builds where alternator placement demands a mid-mount, rear-support configuration. Built for serious engine builders and marine enthusiasts who rely on tight, reliable electrical systems, this aluminum bracket secures the alternator in a location that maintains proper belt tension and clearance while freeing up critical engine bay real estate. Whether you're building a performance marine engine or a street application, alternator support directly impacts charging system longevity and prevents belt slip under load.

Machined from natural aluminum, the Rear Alternator Block Mount features a robust block-mount design that bolts directly to your small block Chevy, eliminating vibration and misalignment issues common in poorly supported electrical systems. The mid-mount, rear-support geometry is specifically engineered to work with short water pump configurations, allowing builders to optimize pulley centerlines and belt wrap without compromising engine performance or thermal management. At just 0.33 lbs, this lightweight bracket reduces unsprung weight while maintaining the structural rigidity needed to isolate alternator movement and extend brush life under dynamic conditions.

Marine builders and hot rod fabricators trust this mount when space constraints or custom intake manifold clearances rule out traditional front-mount alternators. The driver-side rear positioning makes it ideal for applications where serpentine belt routing, fuel system layout, or supercharger placement demands a non-standard solution. Installation requires basic engine bay measurements and secure block bolting; ensure your alternator pulley aligns with the crankshaft centerline to prevent premature belt wear. This bracket is compatible exclusively with small block Chevy engines fitted with short water pump housings and mid-mount alternator configurations.