SBF 50oz. Steel Harmonic Balancer - Non SFI

The SBF 50oz. Steel Harmonic Balancer – Non SFI from Power Bond Balancers is a precision-engineered crankshaft damper built specifically for small block Ford engines in street and mild performance applications. A harmonic balancer absorbs and dampens vibrations generated by the rotating crankshaft, reducing stress on engine bearings, oil seals, and drivetrain components. This external-balance design with 50 oz. of inertia mass is essential for engines running stock or lightly modified internals, offering reliability and longevity for daily drivers and weekend warriors alike.

Constructed from steel with a durable black paint finish, this balancer features a 6.360-inch outer diameter and is designed to match your small block Ford's original balance requirements. The 50 oz. external balance specification means the counterweights are positioned on the outer ring, making this unit compatible with externally balanced small block Ford applications—typically carbureted street engines and naturally aspirated builds. The robust steel construction dissipates heat efficiently and resists the flexing and micro-slippage that can occur with rubber-ring balancers over time, ensuring consistent timing reference for ignition systems and fuel injection tuning.

This harmonic balancer is ideal for street-driven small block Fords—289, 302, 351W, and similar displacement engines—where reliability and stock-level performance are priorities. Installation is straightforward on any small block Ford equipped with a standard crankshaft snout and is not SFI-certified, making it unsuitable for sanctioned drag racing or competition events requiring SFI certification. Verify your engine's balance requirement (external vs. internal) and displacement before purchasing to ensure proper fitment and vibration dampening effectiveness.