Dayco PB1009N Engine Harmonic Balancer

Dayco Premium OEM Replacement Balancer PB1009N

The Dayco PB1009N is a premium OEM replacement harmonic balancer for classic Ford and Mercury V8 applications. It is built with a hub-weighted counterweight balance, cast iron outer ring, and timing marks for accurate engine service and dependable crankshaft damping.

Key Features

• Engine harmonic balancer for Ford and Mercury applications
• Hub weighted counterweight balance for OE-style engine damping
• Cast iron outer ring for durable construction
• Timing marks included for service and setup reference
• 3-bolt design with no integrated pulleys
• Crank bore: 1.374 in. (34.89 mm)
• Overall outside diameter: 6.536 in. (166.00 mm)
• Overall width: 3.012 in. (76.50 mm)
• Ring width: 1.260 in. (31.98 mm)
• Nose outside diameter: 1.876 in. (47.65 mm)

Detailed Description

Dayco Premium OEM Replacement Balancer PB1009N is engineered as a direct-fit harmonic balancer for a range of Ford LTD, Mustang, E-100, E-150, E-250, and E-350 Econoline models, along with Mercury Cougar, Montego, Marquis, Colony Park, and Grand Marquis applications. This part number is also referenced by ATP 102204, Dorman 594-275, and Pioneer DA-2009 for the same application. The 3-bolt hub-weighted design and cast iron outer ring support crankshaft vibration control while the timing marks provide a clear reference during engine service. The PB1009N is a practical choice for restoring proper balance on classic Ford and Mercury engines where OE-style dimensions matter.

What It Helps Address

• Crankshaft vibration from a worn or damaged harmonic balancer
• Timing reference issues when the original marks are faded or inaccurate
• Noise or imbalance caused by a deteriorated outer ring
• Fitment problems on 3-bolt Ford and Mercury engine applications
• Replacement needs for aging balancers on classic LTD, Mustang, and Econoline models

Installation Notes and Tips

Verify crank bore, nose diameter, bolt hole quantity, and overall dimensions before installation. This balancer does not include hardware, installation instructions, a crank trigger/exciter plate, or a Woodruff key. It also has no integrated pulleys, so confirm pulley and accessory alignment during service. For best results, compare the original balancer to the PB1009N before assembly and ensure the timing marks are positioned correctly for your engine setup.

Quality Assurance

Dayco’s Premium OEM Replacement Balancer line is built for OE-style service replacement, with dimensions and construction intended to match the needs of original-equipment applications. The PB1009N is specified for 1969-1981 Ford and Mercury vehicles listed in the fitment data, including 1969-1974 Ford LTD, 1970-1973 Ford Mustang, 1975-1980 Ford E-Series vans, and 1969-1980 Mercury Cougar and related models.

Compatible With 1969-1974 Ford LTD, 1970-1973 Ford Mustang, 1975-1980 Ford E-100/E-150/E-250/E-350 Econoline, and 1969-1980 Mercury Cougar, Montego, Marquis, Colony Park, and Grand Marquis applications. Dayco PB1009N is a direct replacement harmonic balancer for classic Ford and Mercury engine service.