PRW 2391016 BB Chrysler Counterweight

The PRW Power 2391016 damper engine harmonic balancer counterweight is engineered for externally balanced Mopar big block engines, working with PRW nodular iron and Pro Series SFI-rated balancers to match OEM crankshaft balance specs. By providing the correct external mass, it helps reduce vibration, minimize stress on the crankshaft and rotating assembly, and support long-term durability, while its removable design and included hardware make it a smart choice for performance builds and future upgrades. External Engine Balance. Bolts included. Counterweight weighs 4.64 oz.