Dayco PB2221SC Engine Harmonic Balancer

Overview of Dayco Supercharger Performance Balancer PB2221SC

The Dayco Supercharger Performance Balancer PB2221SC is engineered for precision and durability in engine harmonic balancing. Designed specifically for select Chevrolet, GMC, Oldsmobile, and Pontiac models, this balancer supports optimal engine performance by reducing vibrations and maintaining crankshaft stability.

• Compatible with Chevrolet Bel Air, Camaro, Caprice, Corvette, El Camino, Impala, Malibu, Monte Carlo, Nova
• Fits GMC Blazer, C10 Suburban, C20 Suburban, C1500, C2500, G10, G20, G30, Jimmy, K5 Blazer, K10 Suburban, K20 Suburban, K1500, K2500
• Also fits Oldsmobile Starfire, Monza and Pontiac Firebird, Sunbird
• Part Number: PB2221SC
• 9 bolt holes for secure mounting
• Neutral counterweight balance with no counterweight
• Steel outer ring for durability
• Includes timing marks for accurate engine timing

Key Features and Specifications

• Crank bore diameter: 1.245 inches (31.60 mm)
• Nose outside diameter: 1.762 inches (44.75 mm)
• Overall outside diameter: 6.752 inches (171.50 mm)
• Overall width: 2.343 inches (59.50 mm)
• Ring width: 1.299 inches (32.99 mm)
• No integrated pulleys included
• No crank trigger or exciter plate
• Hardware and installation instructions not included
• Woodruff key not included

About the Supercharger Performance Balancer Line

The Dayco Supercharger Performance Balancer line is designed to meet the demands of high-performance and supercharged engines. This product line focuses on delivering precise harmonic balancing without added counterweights, which helps maintain engine reliability and smooth operation under increased load conditions. The PB2221SC model is part of this line, providing a steel outer ring construction and timing marks to support accurate engine tuning and durability.

Applications and Problem Solving

• Reduces crankshaft vibration in Chevrolet, GMC, Oldsmobile, and Pontiac engines
• Helps prevent premature wear of engine components caused by imbalance
• Supports consistent engine timing with integrated timing marks
• Improves engine smoothness in vehicles with supercharged setups
• Compatible with a wide range of classic and performance models for reliable fitment

Installation Notes and Tips

• Ensure the crank bore diameter matches 1.245 inches (31.60 mm) for proper fit
• Verify bolt hole quantity of 9 for secure mounting
• Use appropriate hardware as none is included with this part
• Check timing marks alignment during installation for accurate engine timing
• Professional installation is recommended to avoid damage to the harmonic balancer or crankshaft

Quality Assurance and Warranty

Dayco manufactures the PB2221SC harmonic balancer to meet strict quality standards, using a durable steel outer ring and precise machining tolerances. While specific warranty details are not provided, Dayco products typically come with manufacturer-backed quality assurance to ensure reliable performance in compatible Chevrolet, GMC, Oldsmobile, and Pontiac vehicles.