Help control crankshaft vibration and keep your belt-driven accessories turning with the Dayco harmonic balancer PB81117SC, a Powerbond supercharger performance balancer with two integrated serpentine pulleys. It fits many vehicles, among them the 1997-2013 Chevrolet Corvette 5.7L / 6.0L / 6.2L, the 2011-2017 Chevrolet Caprice 6.0L and the 2014-2017 Chevrolet SS 6.2L, and is a direct-fit replacement for the listed applications. See the Buyer's Guide tab for the full list.
A harmonic balancer mounts on the crankshaft and is designed to damp the crank's torsional vibration, while its pulleys drive the accessory belts. Dayco lists this unit as a supercharger performance balancer in its Powerbond range.
Country of origin: Australia.
Interchange: 102120
This part cross-references / interchanges with the following part numbers:
Is this Corvette harmonic balancer right for a 1997-2013 Chevrolet Corvette 5.7L / 6.0L / 6.2L?
It is listed for the 1997-2013 Chevrolet Corvette with V8-5.7L, V8-6.0L or V8-6.2L engines, depending on the year. Check the Buyer's Guide tab for your exact engine.
What does an engine harmonic balancer do?
It mounts on the crankshaft and is designed to damp torsional vibration from the crank. Its integrated pulleys also drive the engine's belt-driven accessories.
Does the Dayco Powerbond harmonic balancer come with a woodruff key or bolts?
No. Installation instructions are included, but the woodruff key and hardware are not. Consult the vehicle service information for the correct fasteners and whether they may be reused.
What pulley setup does PB81117SC use?
It has two integrated serpentine pulleys: a 4-groove pulley at 7.060 in (179.3 mm) OD and an 8-groove pulley at 7.327 in (186.1 mm) OD. The crank bore is 1.481 in (37.60 mm), and the balancer has timing marks.
What are signs a harmonic balancer may need replacing?
Signs include a wobbling pulley, belt misalignment or uneven belt wear, timing marks that seem shifted, and increased engine vibration. Other parts can cause similar symptoms, so diagnose the cause first.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
