Dayco PB1203N Engine Harmonic Balancer

Dayco PB1203N Harmonic Balancer for Ford V8 Applications

The Dayco PB1203N is a premium OEM replacement harmonic balancer built for select 1968-1969 Ford and Mercury V8 applications. It is a 3-bolt engine balancer with hub-weighted counterbalance, cast iron outer ring, and timing marks for accurate engine service.

Key Features

• Part number: PB1203N
• Premium OEM Replacement Balancer from Dayco
• 3 bolt hole quantity for the listed Ford and Mercury applications
• Hub weighted counterweight balance
• Cast iron outer ring material
• Timing marks included
• Crank bore: 1.375 in. (34.90 mm)
• Nose outside diameter: 1.878 in. (47.70 mm)
• Overall outside diameter: 6.536 in. (166.00 mm)
• Overall width: 3.170 in. (80.50 mm)
• Ring width: 1.260 in. (31.98 mm)
• No integrated pulleys, crank trigger plate, woodruff key, or installation hardware included

Product Details

Dayco PB1203N is engineered as an OEM-style engine harmonic balancer for classic Ford and Mercury engines that use a 3-bolt, counterweighted design with a raised pulley. It is listed for 1968-1969 Ford Bronco, 1969 Ford E-100 Econoline, 1968-1969 Ford LTD, 1968-1969 Ford Mustang, 1968-1969 Mercury Montego, and 1968-1969 Mercury Cougar applications. This part cross-references ATP 102201 and Dorman 594-271 for the same application.

What It Is Used For

• Replacing a worn or damaged engine harmonic balancer on listed Ford and Mercury V8 vehicles
• Restoring crankshaft vibration damping in classic engine assemblies
• Addressing timing mark visibility issues during ignition setup
• Replacing a balancer with cracked, separated, or deteriorated outer ring material
• Matching a 3-bolt balancer configuration with hub-weighted balance

Installation Notes and Tips

Verify crank bore, nose diameter, bolt pattern, and overall dimensions before installation. Because hardware and instructions are not included, reuse or source the correct fasteners and follow the vehicle service manual for torque and alignment procedures. Confirm timing mark orientation and pulley alignment during installation on the Bronco, Mustang, Cougar, and other listed applications.

Quality Assurance

Dayco’s Premium OEM Replacement Balancer line is built for direct-fit service on the listed applications and uses the specified cast iron outer ring and hub-weighted design. The PB1203N is intended to meet the dimensional and configuration requirements shown for the confirmed fitment list.