Dayco PB1151N Engine Harmonic Balancer

Premium OEM Replacement Balancer for Ford and Mercury

The Dayco PB1151N is a premium OEM replacement harmonic balancer for select Ford and Mercury applications. It is built with a neutral balance design, cast iron outer ring, and dual V-belt pulley layout to match the needs of compatible classic and late-model engines.

Use this Dayco PB1151N harmonic balancer when you need a direct replacement for vehicles such as the Ford Mustang, Ford Bronco, Mercury Capri, and Mercury Cougar. The design includes timing marks for setup and service work, along with a 4-bolt hole pattern and dual integrated pulleys.

Key Features

• Premium OEM replacement balancer from Dayco
• Neutral balance design with no counterweight
• Cast iron outer ring for durable engine service
• Dual integrated V-belt pulleys
• Timing marks included for engine alignment
• 4 bolt hole quantity
• Crank bore: 1.250 in. (31.73 mm)
• Overall outside diameter: 6.142 in. (156.00 mm)
• Overall width: 2.363 in. (60.00 mm)

Product Details

Dayco Premium OEM Replacement Balancer PB1151N is engineered as an engine harmonic balancer for compatible Ford and Mercury vehicles. The unit measures 6.142 inches in overall outside diameter, 2.363 inches in overall width, and uses a 1.250-inch crank bore with a 1.754-inch nose outside diameter. It features two integrated pulleys, each with one groove and V-belt construction, making it a practical choice for dual-accessory belt setups. This part cross-references Dorman 594-244 for the same application.

Compatible With 1964-1967 Mercury Villager, N/A; 1966-1967 Mercury Capri, N/A; 1968 Mercury Montego, N/A; 1968-1970 Ford Mustang, N/A; 1973-1974 Ford Bronco, N/A; 1975-1977 Mercury Monarch, N/A; 1978-1979 Mercury Zephyr, N/A; 1978-1983 Ford Fairmont, N/A; 1979-1982 Ford Mustang, N/A; 1979 Mercury Capri, N/A; 1980 Mercury Cougar, N/A; 1980-1982 Ford Thunderbird, N/A; 1983 Ford LTD, N/A.

Common Uses

• Replacing a worn or damaged harmonic balancer
• Restoring proper crankshaft vibration control
• Correcting timing mark visibility during service
• Addressing belt drive wear on dual V-belt setups
• Servicing classic Ford Mustang and Mercury engine assemblies

Installation Notes and Tips

Verify crank bore, nose diameter, bolt hole quantity, and pulley layout before installation. This PB1151N does not include hardware, installation instructions, a crank trigger/exciter plate, or a Woodruff key. Timing marks are present, and the neutral balance design should be matched to the engine’s original specification. Confirm accessory drive alignment on Ford Mustang, Ford Bronco, and Mercury Capri applications before final assembly.

Quality Assurance

Dayco’s Premium OEM Replacement Balancer line is built for direct-fit service replacement in applications that require OE-style dimensions and pulley configuration. The PB1151N follows the listed specifications for fitment across select Ford and Mercury vehicles, including Ford Mustang and Mercury Cougar applications.