Dayco PBO81190SC10 Engine Harmonic Balancer

Dayco SC Performance Harmonic Balancer

The Dayco SC Performance 8 Rib 10% Overdrive harmonic balancer, part number PBO81190SC10, is built for GM V8 applications that need a neutral-balance crankshaft damper with integrated serpentine pulley drive. It combines timing marks, a steel outer ring, and dual pulley integration for performance-oriented accessory drive setups.

Compatible With Chevrolet Silverado 1500, Tahoe, Camaro, Express 2500, and GMC Sierra 1500 applications across a wide range of model years, this balancer is a fitment-focused solution for street and performance builds. The PBO81190SC10 is also a direct search match for owners looking for a Dayco SC Performance 8 Rib 10% Overdrive harmonic balancer.

Key Features

• Dayco SC Performance 8 Rib 10% Overdrive product line
• Neutral balance design with no counterweight
• Steel outer ring construction
• Integrated dual serpentine pulleys
• Timing marks included for setup and service
• Crank bore: 1.481 in. / 37.60 mm
• Nose outside diameter: 2.126 in. / 54.00 mm
• Overall outside diameter: 8.426 in. / 214.00 mm
• Overall width: 4.626 in. / 117.50 mm
• Ring width: 2.569 in. / 65.23 mm
• Bolt hole quantity: 9

SC Performance Overdrive Details

Dayco’s SC Performance 8 Rib 10% Overdrive line is aimed at applications that need a revised accessory drive ratio while maintaining a clean, serviceable harmonic balancer layout. The 8-rib pulley arrangement and 10% overdrive configuration support accessory drive tuning on compatible GM platforms, while the neutral balance design and timing marks keep the part aligned with engine setup requirements. Part number PBO81190SC10 is a strong match for builders searching for a performance harmonic balancer for Chevrolet Silverado, GMC Sierra, and related GM truck and SUV platforms.

What This Part Helps Address

• Crankshaft vibration control in GM V8 engine builds
• Accessory drive ratio changes for overdrive pulley setups
• Timing reference visibility during engine service
• Replacement of worn or damaged harmonic balancers
• Serpentine belt drive alignment on compatible applications

Installation Notes and Tips

Installation instructions are included. Verify crank bore, nose diameter, bolt pattern, and pulley alignment before installation. This balancer does not include hardware or a Woodruff key, and it does not use a crank trigger/exciter plate. Confirm timing mark orientation and accessory belt routing against the vehicle’s service information before final assembly.

Quality Assurance

Dayco manufactures this harmonic balancer with a steel outer ring and integrated pulley design for GM performance and service applications. The PBO81190SC10 is engineered for direct-fit use on listed Chevrolet and GMC platforms, including Silverado 1500, Tahoe, Camaro, Express 2500, and Sierra 1500 applications.

• Fits 1999-2013 Chevrolet Silverado 1500, N/A
• Fits 2000-2014 Chevrolet Tahoe, N/A
• Fits 2010-2015 Chevrolet Camaro, N/A
• Fits 2003-2020 Chevrolet Express 2500, N/A
• Fits 1999-2013 GMC Sierra 1500, N/A
• Fits 2000-2014 GMC Yukon, N/A