Dayco PB1486N Engine Harmonic Balancer

Dayco PB1486N Harmonic Balancer

The Dayco PB1486N is a premium OEM replacement harmonic balancer for a range of GM and Isuzu applications. It is built with a neutral balance design, cast iron outer ring, and integrated crank trigger/exciter plate support for engines that rely on accurate crankshaft signal timing.

Compatible With Chevrolet Camaro, Pontiac Firebird, Chevrolet S10, GMC Sonoma, Isuzu Pickup, Isuzu Rodeo, Isuzu Trooper, and related applications listed below, this balancer is a direct-fit service part for vehicles using the specified crankshaft and timing-mark configuration. The Dayco PB1486N is also referenced by part number PB1486N in replacement searches.

Key Features

• Premium OEM replacement balancer from Dayco
• Neutral balance design with no counterweight
• Cast iron outer ring for durable engine service
• Crank trigger/exciter plate included in the design
• Timing marks included for service and alignment
• 4 bolt holes, 1.245 in. crank bore, and 1.762 in. nose outside diameter
• Overall outside diameter: 6.406 in. Overall width: 2.288 in.
• Ring width: 0.984 in.

Product Details

Dayco’s Premium OEM Replacement Balancer line focuses on direct replacement fitment for engines that require accurate harmonic control and crankshaft indexing. The PB1486N uses a cast iron outer ring, neutral counterweight balance, and timing marks to support proper engine synchronization. Its 31.60 mm crank bore, 44.75 mm nose outside diameter, and 58.10 mm overall width are key dimensions for matching the original engine setup. This part cross-references ATP 102063 and Dorman 594-147 for the same application.

Common Uses

• Replacing a worn or damaged harmonic balancer on Chevrolet Camaro and Pontiac Firebird applications
• Restoring crankshaft vibration control after rubber separation or ring movement
• Correcting timing mark visibility issues during ignition or engine service
• Addressing crank trigger/exciter plate alignment concerns on supported engines
• Servicing GM and Isuzu engines that require a neutral-balance balancer

Installation Notes

Verify crank bore, nose diameter, bolt-hole pattern, and timing-mark location before installation. This balancer does not include hardware, installation instructions, or a woodruff key. Confirm that the engine uses a neutral-balance configuration and that the crank trigger/exciter plate arrangement matches the original part before assembly.

Quality Assurance

Dayco’s Premium OEM Replacement Balancer line is built for direct replacement service on listed applications, including 1985-1995 Chevrolet Camaro, 1993-1995 Pontiac Firebird, 1988-1993 Chevrolet S10, 1991-1993 GMC Sonoma, and other supported GM and Isuzu models. The PB1486N is engineered to match the specified OE-style dimensions and timing features for accurate fitment.

• Fits 1985-1995 Chevrolet Camaro, N/A
• Fits 1993-1995 Pontiac Firebird, N/A
• Fits 1988-1989 Pontiac Firebird, N/A
• Fits 1991-1994 Isuzu Pickup, N/A
• Fits 1988-1993 Chevrolet S10, N/A
• Fits 1991-1993 GMC Sonoma, N/A
• Fits 1991-1992 Isuzu Rodeo, N/A
• Fits 1989-1991 Isuzu Trooper, N/A
• Fits 1988-1990 GMC S15, N/A
• Fits 1988-1989 Chevrolet S10 Blazer, N/A
• Fits 1988-1989 GMC S15 Jimmy, N/A
• Fits 1983-1985 Buick Century, N/A
• Fits 1984-1985 Chevrolet Citation II, N/A
• Fits 1985 Chevrolet S10, N/A
• Fits 1985 Oldsmobile Cutlass Ciera, N/A
• Fits 1983 Oldsmobile Cutlass Ciera, N/A
• Fits 1984 Oldsmobile Omega, N/A
• Fits 1982 Oldsmobile Omega, N/A
• Fits 1984 Pontiac Phoenix, N/A
• Fits 1982-1983 Buick Skylark, N/A
• Fits 1982-1983 Chevrolet Camaro, N/A
• Fits 1982-1983 Chevrolet Celebrity, N/A
• Fits 1982-1983 Chevrolet Citation, N/A
• Fits 1982-1983 Oldsmobile Omega, N/A
• Fits 1982-1983 Pontiac 6000, N/A
• Fits 1982-1983 Pontiac Firebird, N/A
• Fits 1982-1983 Pontiac Phoenix, N/A
• Fits 1982 Oldsmobile Cutlass Ciera, N/A