Dayco PB1490N Engine Harmonic Balancer

Dayco Premium OEM Replacement Balancer PB1490N

The Dayco PB1490N is a premium OEM replacement harmonic balancer for GM truck, SUV, and van applications that require accurate crankshaft damping and timing reference. Built with a hub-weighted counterbalance and a cast iron outer ring, it supports smooth engine operation in demanding V8 applications.

Compatible With Chevrolet and GMC models including C/K trucks, Suburban, Tahoe, Yukon, Express, Savana, and P-series applications, this harmonic balancer is built around OE-style dimensions for direct replacement service. The Dayco Premium OEM Replacement Balancer line focuses on fit, balance, and dependable engine control for repair work that calls for factory-style geometry.

Key Features

• Part number PB1490N for direct identification
• Hub weighted counterweight balance for crankshaft damping
• Cast iron outer ring for durable engine service
• Timing marks included for setup and service reference
• 4-bolt hole design
• 1.600 in. crank bore and 2.334 in. nose outside diameter
• 7.993 in. overall outside diameter and 2.441 in. overall width
• No integrated pulleys, crank trigger plate, or woodruff key

Detailed Description

The PB1490N harmonic balancer is engineered for GM engines used in 1994-2002 Chevrolet and GMC trucks, vans, SUVs, and chassis applications. It measures 7.993 inches in overall outside diameter, 2.441 inches in overall width, and uses a 1.600 inch crank bore with a 2.334 inch nose outside diameter. The cast iron outer ring and hub-weighted balance help control crankshaft vibration while maintaining timing mark visibility for service work. This part cross-references ATP 102051 for the same application.

What It Helps Address

• Crankshaft vibration and torsional oscillation
• Worn or damaged harmonic balancer assemblies
• Timing mark visibility issues during engine service
• Noise or imbalance concerns at the front of the engine
• Replacement needs on GM truck, van, and SUV engines

Installation Notes and Tips

Verify crank bore, nose diameter, bolt hole pattern, and overall dimensions before installation. Hardware is not included, and installation instructions are not included. Confirm timing mark orientation during assembly and inspect the crank snout and keyway area for wear before pressing the balancer into place. Fits 1996-2002 Chevrolet Express 2500, N/A; Fits 1996-2002 Chevrolet Express 3500, N/A; Fits 1996-2002 GMC Savana 2500, N/A; Fits 1996-2002 GMC Savana 3500, N/A; Fits 1994-2000 Chevrolet C2500, N/A; Fits 1994-2000 Chevrolet C3500, N/A; Fits 1994-2000 Chevrolet K2500, N/A; Fits 1994-2000 Chevrolet K3500, N/A; Fits 1994-2000 GMC C2500, N/A; Fits 1994-2000 GMC C3500, N/A; Fits 1994-2000 GMC K2500, N/A; Fits 1994-2000 GMC K3500, N/A; Fits 1995-1999 Chevrolet C1500 Suburban, N/A; Fits 1994-1999 Chevrolet C2500 Suburban, N/A; Fits 1995-1999 Chevrolet K1500 Suburban, N/A; Fits 1994-1999 Chevrolet K2500 Suburban, N/A; Fits 1994-1999 Chevrolet P30, N/A; Fits 1995-1999 Chevrolet Tahoe, N/A; Fits 1995-1999 GMC C1500 Suburban, N/A; Fits 1994-1999 GMC C2500 Suburban, N/A; Fits 1995-1999 GMC K1500 Suburban, N/A; Fits 1994-1999 GMC K2500 Suburban, N/A; Fits 1994-1999 GMC P3500, N/A; Fits 1994-1998 Chevrolet C1500, N/A; Fits 1994-1998 Chevrolet K1500, N/A; Fits 1994-1997 GMC C1500, N/A; Fits 1994-1997 GMC Yukon, N/A; Fits 1994-1996 Chevrolet G30, N/A; Fits 1994-1996 GMC G3500, N/A; Fits 1994-1995 Chevrolet G20, N/A; Fits 1994-1995 GMC G2500, N/A; Fits 1994 Chevrolet Blazer, N/A.

Quality Assurance

Dayco’s Premium OEM Replacement Balancer line is built to match OE-style service requirements for engine repair and maintenance. The PB1490N is specified with timing marks and application-specific dimensions to support accurate replacement on listed Chevrolet and GMC vehicles.