Dayco PB1084N Engine Harmonic Balancer

Dayco PB1084N Harmonic Balancer

The Dayco PB1084N is a premium OEM replacement harmonic balancer for Ford, Lincoln, and Mercury V8 applications. It is built with a grey iron outer ring, ring-weighted counterbalance, and timing marks for accurate engine service and replacement.

Dayco’s Premium OEM Replacement Balancer line focuses on direct-fit engine vibration control for classic Ford truck and car platforms, including Bronco, F-150, Mustang, Thunderbird, Grand Marquis, and Town Car applications.

Key Features

• Part number PB1084N
• Engine harmonic balancer for cylinder block applications
• Grey iron outer ring construction
• Ring-weighted counterweight balance
• Timing marks included
• Crank bore: 1.374 in. (34.89 mm)
• Nose outside diameter: 1.875 in. (47.60 mm)
• Overall outside diameter: 6.396 in. (162.45 mm)
• Overall width: 4.134 in. (105.00 mm)
• Ring width: 1.497 in. (38.00 mm)
• 4-bolt hole design
• No integrated pulleys

Detailed Description

The Dayco PB1084N harmonic balancer is a direct replacement for a wide range of Ford, Lincoln, and Mercury vehicles from 1981 through 1995. It is listed for applications such as the Ford Bronco, F-150, F-250, Mustang, Thunderbird, E-Series vans, LTD, and Lincoln Town Car, along with Mercury Cougar, Grand Marquis, Colony Park, and Capri models. This part cross-references Dorman 594-019 and 594-024 for the same application.

Use PB1084N when replacing a worn or damaged balancer on compatible Ford Bronco and Ford Mustang applications, or when servicing classic Ford truck and full-size car engines that require timing marks and a 4-bolt crankshaft interface. The ring-weighted design and grey iron outer ring support stable crankshaft damping in OE-style replacement service.

What It Helps Address

• Crankshaft vibration from a deteriorated balancer
• Timing mark visibility issues during engine service
• Wobble or runout caused by a worn outer ring
• Driveability problems related to harmonic imbalance
• Replacement needs on aging Ford, Lincoln, and Mercury V8 engines

Installation Notes and Tips

Verify crank bore, nose diameter, bolt hole count, and overall dimensions before installation. This balancer does not include hardware, installation instructions, a crank trigger/exciter plate, or a Woodruff key. Confirm timing mark orientation and engine application before final assembly. Compatible vehicle coverage includes 1981-1995 Ford Bronco, 1982-1995 Ford Mustang, 1982-1991 Mercury Grand Marquis, and 1985-1990 Lincoln Town Car, with additional fitments listed for Ford trucks, vans, and select Lincoln and Mercury models.

Quality Assurance

Dayco’s Premium OEM Replacement Balancer line is built for OE-style fitment and service replacement across confirmed Ford, Lincoln, and Mercury applications. PB1084N is specified with published dimensions and timing marks to support accurate matching during engine repair.