Dayco PB1112ST Engine Harmonic Balancer

Dayco Street Performance Balancer PB1112ST

The Dayco Street Performance Balancer PB1112ST is an engine harmonic balancer built for Chrysler and Dodge V8 applications that use a steel crank and a 3-bolt pulley pattern. It features a neutral balance design, cast iron outer ring, and timing marks for accurate engine setup.

Key Features

• Neutral balance with no counterweight
• Cast iron outer ring for street performance use
• Timing marks included for engine timing reference
• Crank bore: 1.530 in. (38.85 mm)
• Nose outside diameter: 2.188 in. (55.55 mm)
• Overall outside diameter: 7.264 in. (184.50 mm)
• Overall width: 1.812 in. (46.00 mm)
• Ring width: 1.200 in. (30.48 mm)
• 6-bolt hole quantity

Product Details

Dayco Street Performance Balancer PB1112ST is designed for classic Chrysler and Dodge engine combinations that require a neutral-balance harmonic balancer with a steel crank compatible, 3-bolt pulley pattern. It is listed for 1966-1971 Chrysler Imperial, New Yorker, Newport, and Town & Country; 1967-1971 Dodge Charger and Monaco; 1970-1971 Dodge Challenger; and 1968 Chrysler 300. This part cross-references Pioneer 872039 for the same application.

What It Helps Address

• Crankshaft vibration control in street performance engines
• Timing reference issues when the original marks are worn or missing
• Replacement needs for aging harmonic balancers on classic Chrysler and Dodge vehicles
• Fitment concerns on steel crank applications with a 3-bolt pulley pattern
• Restoration work requiring a neutral-balance balancer with OE-style dimensions

Installation Notes

Confirm crank bore, nose diameter, and pulley pattern before installation. This balancer is for steel crank compatible applications and requires a specific installation tool. Hardware, installation instructions, and a Woodruff key are not included. Verify timing mark alignment during setup and follow the engine builder’s procedure for proper balancer installation.

Quality Assurance

Dayco Street Performance Balancer PB1112ST is built to published dimensional specifications for fitment-sensitive engine applications. The Street Performance Balancer line focuses on balanced construction and timing-mark accuracy for classic performance and restoration use.