Dayco PB1210ST Engine Harmonic Balancer

Dayco Street Performance Harmonic Balancer PB1210ST

The Dayco PB1210ST Street Performance Balancer is an engine harmonic balancer built for Ford and Lincoln applications that require neutral balance and timing mark visibility. With a cast iron outer ring, 4-bolt hole pattern, and a 1.374-inch crank bore, it supports precise crankshaft damping in street performance and OE-style replacement use.

Street Performance Balancer Details

Dayco’s Street Performance Balancer line focuses on dependable crankshaft vibration control for performance-minded street engines. The PB1210ST uses a neutral, no-counterweight design and includes timing marks for setup and service reference. Its 6.674-inch overall outside diameter and 2.394-inch overall width provide a compact fitment profile for the listed Ford, Lincoln, and Mercury applications.

• Part number: PB1210ST
• Engine harmonic balancer for street performance and replacement use
• Neutral balance, no counterweight
• Cast iron outer ring
• 4 bolt holes
• Timing marks included
• Crank bore: 1.374 in. / 34.89 mm
• Overall outside diameter: 6.674 in. / 169.50 mm
• Overall width: 2.394 in. / 60.80 mm
• Ring width: 1.438 in. / 36.50 mm

Vehicle Fitment

• Fits 1997 Ford F-250 HD, N/A
• Fits 1983-1997 Ford F-350, N/A
• Fits 1980-1996 Ford E-350 Econoline, N/A
• Fits 1980-1996 Ford E-350 Econoline Club Wagon, N/A
• Fits 1983-1996 Ford F-250, N/A
• Fits 1980-1991 Ford E-250 Econoline Club Wagon, N/A
• Fits 1980 Ford E-250 Econoline, N/A
• Fits 1968-1974 Lincoln Continental, N/A
• Fits 1972-1974 Mercury Colony Park, N/A
• Fits 1973-1974 Mercury Cougar, N/A
• Fits 1972-1974 Mercury Marquis, N/A
• Fits 1973-1974 Mercury Montego, N/A

What It Can Address

• Crankshaft vibration control on Ford F-250, F-350, and E-Series applications
• Timing reference visibility during engine service
• Replacement of a worn or damaged harmonic balancer
• Fitment needs for neutral-balance street performance engines
• Restoration work on Lincoln Continental and Mercury full-size applications

Installation Notes

PB1210ST does not include hardware, installation instructions, a crank trigger/exciter plate, or a Woodruff key. Verify crank bore, bolt-hole pattern, and timing mark orientation before installation. Use the listed dimensions to confirm clearance and alignment with the engine’s front-end accessory and crankshaft setup. This part cross-references Dorman 594-080S and Pioneer 872017 for the same application.

Quality Assurance

Dayco Street Performance Balancer components are built for engine applications that require accurate damping and service-friendly timing marks. Confirm all fitment details against the vehicle and engine configuration before installation.