Replacement Harmonic Balancer Suit GM SB Chev 400 c.i V8, 8" O.D, External Balance

Replacement Harmonic Balancer for GM SB Chev 400 c.i V8 — 8" Ø External Balance

Direct OEM replacement designed specifically for GM small-block Chevrolet 400 c.i V8 engines, featuring an 8" outer diameter and external balance for precise fitment.

Powerbond OEM replacement balancers combine a strong SG iron hub with bonded dampening rubber, delivering durability that outperforms cheaper, non-bonded alternatives. Bonded dampening rubber offers superior resistance to spin and dislocation under high torque and serpentine-belt loading, ensuring consistent dampening and reduced crankshaft harmonics.

• Bonded dampening rubber for stable vibration control and longevity
• SG iron cast hub for maximum strength and reliability
• Factory dynamic balance ensures smooth operation at idle and under load
• Engineered to handle hi-torque applications and serpentine belt-driven accessories
• Tested to deliver up to 4x the strength of pressed-damper balancers
• Part of the Powerbond OEM range, covering more than 450 engine types across U.S., Japanese, Korean, and selected European vehicles

Whether you're rebuilding a GM SB Chev 400 c.i V8 or performing maintenance on a related engine family, this replacement balancer provides OEM-grade performance and long-term reliability. It’s a practical choice for professional repair shops and stock engine builders seeking a robust, dependable solution.