Dayco PB1451N Engine Harmonic Balancer

Dayco Premium OEM Replacement Balancer PB1451N

The Dayco PB1451N engine harmonic balancer is a Premium OEM Replacement Balancer built for select Chevrolet and GMC truck, van, and chassis applications from 1991-1993. It is engineered with a ring-weighted counterweight balance, cast iron outer ring, and timing marks for accurate service work on the engine front end.

Key Features

• Engine harmonic balancer for select Chevrolet and GMC applications
• Premium OEM Replacement Balancer line from Dayco
• Ring weighted counterweight balance for OE-style vibration control
• Cast iron outer ring construction
• Timing marks included for setup and inspection
• 3-bolt hole design
• No integrated pulleys, crank trigger/exciter plate, or woodruff key included
• Part number PB1451N for catalog and interchange lookup

Product Details

Dayco PB1451N is a replacement harmonic balancer for engines used in 1991-1993 Chevrolet C1500, C2500, C3500, G30, K2500, K3500, P30, and 1991-1993 GMC C2500, C3500, G3500, K2500, K3500, P3500, plus 1991-1993 Chevrolet and GMC Suburban and heavy-duty chassis applications listed in the fitment data. The Premium OEM Replacement Balancer line focuses on direct-fit service parts for engine vibration damping, crankshaft stability, and timing reference alignment. This part cross-references Dorman 594-026 for the same application.

What It Helps Address

• Crankshaft vibration at idle and under load
• Timing mark visibility during ignition or service checks
• Wear-related replacement of an aging harmonic balancer
• Noise or imbalance concerns from a deteriorated front engine damper
• Service replacement on Chevrolet C1500, C2500, and GMC K2500/K3500 applications

Installation Notes

Verify crank bore, nose outside diameter, bolt hole quantity, and overall dimensions before installation. This balancer measures 7.993 inches overall outside diameter, 2.686 inches overall width, and 1.599 inches crank bore, with a 2.333-inch nose outside diameter and 1.732-inch ring width. Hardware, installation instructions, crank trigger/exciter plate, and woodruff key are not included. Confirm timing mark orientation and engine-specific alignment during installation.

Quality Assurance

Dayco’s Premium OEM Replacement Balancer line is positioned as an OE-style service solution for engine repair and maintenance. PB1451N is built with a cast iron outer ring and ring-weighted balance specification to match the listed applications.