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Street Performance Balancer

Dayco PB1009ST Engine Harmonic Balancer

Brand	Dayco PB1009ST
Bolt Hole Quantity	3
Counterweight Balance	Hub weighted
Crank Bore	1.375
Crank Bore	34.90
Crank Trigger/Exciter Plate	No
Hardware Included	No
Installation Instructions Included	No
Nose Outside Diameter	1.876
Nose Outside Diameter	47.63
Number of Integrated Pulleys	0
Outer Ring Material	Cast iron
Overall Outside Diameter	165.00
Overall Outside Diameter	6.497
Overall Width	3.012
Overall Width	76.50
Ring Width	1.423
Ring Width	36.14
Timing Marks	Yes
Woodruff Key Included	No
Product line	Street Performance Balancer
Fits	Ford and Mercury · 126 vehicles

Street performance line. Application-specific balancer for classic engine service and replacement.

Cast iron ring. Durable outer ring construction with timing marks for setup.

Hub-weighted balance. Engineered for controlled crankshaft damping in compatible builds.

Cross-references Pioneer 872009 and Pioneer DA-2009HD for the same application. See all 2.

$207.05Free shipping

In stock · usually ships same day before 1pm CST

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Street Performance Harmonic Balancer

Dayco PB1009ST is a street performance harmonic balancer for classic Ford and Mercury V8 applications. It is built around a hub-weighted counterweight balance and a cast iron outer ring for controlled crankshaft damping in compatible engines.

Key Features

Hub-weighted counterweight balance for street performance use
Cast iron outer ring construction
Timing marks included for setup and service
3-bolt design with a 1.375-inch crank bore
No integrated pulley, trigger plate, or woodruff key included

Detailed Description

This Dayco harmonic balancer, part number PB1009ST, is engineered for a wide range of Ford and Mercury applications from 1969-1981. Fitment includes Ford Mustang, Ford Torino, Ford Ranchero, Mercury Cougar, and Mercury Montego applications, with notes that identify specific 3-bolt and counterweight configurations where required. The PB1009ST uses a cast iron outer ring, measures 6.497 inches in overall outside diameter, and includes timing marks for accurate engine service. For buyers searching for a Ford Mustang harmonic balancer or Mercury Cougar street performance balancer, PB1009ST matches the listed engine configurations directly.

Street Performance Balancer is Dayco’s product line for performance-oriented engine damping components. This line focuses on application-specific balance and service-friendly features for classic engines that need a replacement harmonic balancer with the correct mounting and timing reference details.

What It Is Used For

Replacing a worn or damaged harmonic balancer
Restoring crankshaft vibration damping in compatible engines
Maintaining timing reference visibility during engine service
Addressing pulley and balance configuration requirements on listed applications
Supporting correct fitment on classic Ford and Mercury V8 builds

Installation Notes and Tips

Verify the listed fitment notes before ordering, especially the 3-bolt and counterweight requirements shown for certain Ford and Mercury models. Confirm crank bore, nose diameter, and overall diameter against the original part before installation. Hardware is not included, and installation instructions are not included. Part number PB1009ST should be matched to the vehicle’s original balancer configuration, including any EEC or electronic engine control exclusions noted in the fitment data.

Quality Assurance

Dayco supplies this balancer as an application-specific replacement for classic performance and service use. The PB1009ST is built with a cast iron outer ring and timing marks to support accurate engine setup on the listed applications.

This part fits 126 vehicles

Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

Year	Make	Model	Submodel	Liters	Cylinders	Notes
1981	Ford	LTD	—	5.8L	V8	w/o EEC; Street Performance Balancer
1981	Mercury	Grand Marquis	—	5.8L	V8	w/o Electronic Engine Control; Street Performance Balancer
1980	Ford	E-100 Econoline	—	5.8L	V8	Street Performance Balancer
1980	Ford	E-100 Econoline Club Wagon	—	5.8L	V8	Street Performance Balancer
1980	Ford	E-150 Econoline	—	5.8L	V8	Street Performance Balancer
1980	Ford	E-150 Econoline Club Wagon	—	5.8L	V8	Street Performance Balancer
1980	Ford	E-250 Econoline	—	5.8L	V8	Street Performance Balancer
1980	Ford	E-250 Econoline Club Wagon	—	5.8L	V8	Street Performance Balancer
1980	Ford	E-350 Econoline	—	5.8L	V8	Street Performance Balancer
1980	Ford	E-350 Econoline Club Wagon	—	5.8L	V8	Street Performance Balancer
1980	Mercury	Grand Marquis	—	5.8L	V8	Mfg. From 9/79; w/o Electronic Engine Control; Street Performance Balancer
1979	Ford	E-100 Econoline	—	5.8L	V8	Street Performance Balancer
1979	Ford	E-100 Econoline Club Wagon	—	5.8L	V8	Street Performance Balancer
1979	Ford	E-150 Econoline	—	5.8L	V8	Street Performance Balancer
1979	Ford	E-150 Econoline Club Wagon	—	5.8L	V8	Street Performance Balancer
1979	Ford	E-250 Econoline	—	5.8L	V8	Street Performance Balancer
1979	Ford	E-250 Econoline Club Wagon	—	5.8L	V8	Street Performance Balancer
1979	Ford	E-350 Econoline	—	5.8L	V8	Street Performance Balancer
1979	Ford	E-350 Econoline Club Wagon	—	5.8L	V8	Street Performance Balancer
1978	Mercury	Cougar	XR-7	5.8L	V8	Street Performance Balancer
1977	Mercury	Cougar	XR-7	5.8L	V8	Street Performance Balancer
1976	Ford	E-100 Econoline	—	5.8L	V8	Street Performance Balancer
1976	Ford	E-100 Econoline Club Wagon	—	5.8L	V8	Street Performance Balancer
1976	Ford	E-150 Econoline	—	5.8L	V8	Street Performance Balancer
1976	Ford	E-150 Econoline Club Wagon	—	5.8L	V8	Street Performance Balancer
1976	Ford	E-250 Econoline	—	5.8L	V8	Street Performance Balancer
1976	Ford	E-250 Econoline Club Wagon	—	5.8L	V8	Street Performance Balancer
1976	Ford	E-350 Econoline	—	5.8L	V8	Street Performance Balancer
1976	Ford	Gran Torino	—	5.8L	V8	Street Performance Balancer
1976	Mercury	Cougar	—	5.8L	V8	Street Performance Balancer
1975	Ford	E-100 Econoline	—	5.8L	V8	Street Performance Balancer
1975	Ford	E-100 Econoline Club Wagon	—	5.8L	V8	Street Performance Balancer
1975	Ford	E-150 Econoline	—	5.8L	V8	Street Performance Balancer
1975	Ford	E-150 Econoline Club Wagon	—	5.8L	V8	Street Performance Balancer
1975	Ford	E-250 Econoline	—	5.8L	V8	Street Performance Balancer
1975	Ford	E-250 Econoline Club Wagon	—	5.8L	V8	Street Performance Balancer
1975	Ford	E-350 Econoline	—	5.8L	V8	Street Performance Balancer
1975	Ford	Gran Torino	—	5.8L	V8	Street Performance Balancer
1975	Mercury	Cougar	—	5.8L	V8	Street Performance Balancer
1974	Ford	Country Sedan	—	5.8L	V8	Street Performance Balancer
1974	Ford	Country Squire	—	5.8L	V8	Street Performance Balancer
1974	Ford	Custom 500	—	5.8L	V8	Street Performance Balancer
1974	Ford	Galaxie 500	—	5.8L	V8	Street Performance Balancer
1974	Ford	Gran Torino	—	5.8L	V8	Street Performance Balancer
1974	Ford	LTD	—	5.8L	V8	Street Performance Balancer
1974	Ford	Ranch Wagon	—	5.8L	V8	Street Performance Balancer
1974	Ford	Ranchero	—	5.8L	V8	Street Performance Balancer
1974	Ford	Torino	—	5.8L	V8	Street Performance Balancer
1974	Mercury	Cougar	—	5.8L	V8	3 bolt w/counterweight & counter sunk pulley; Street Performance Balancer
1974	Mercury	Montego	—	5.8L	V8	3 bolt w/counterweight & counter sunk pulley; Street Performance Balancer
1973	Ford	Country Sedan	—	5.8L	V8	Street Performance Balancer
1973	Ford	Country Squire	—	5.8L	V8	Street Performance Balancer
1973	Ford	Custom 500	—	5.8L	V8	Street Performance Balancer
1973	Ford	Galaxie 500	—	5.8L	V8	Street Performance Balancer
1973	Ford	Gran Torino	—	5.8L	V8	Street Performance Balancer
1973	Ford	LTD	—	5.8L	V8	Street Performance Balancer
1973	Ford	Mustang	—	5.8L	V8	Street Performance Balancer
1973	Ford	Ranch Wagon	—	5.8L	V8	Street Performance Balancer
1973	Ford	Ranchero	—	5.8L	V8	Street Performance Balancer
1973	Ford	Torino	—	5.8L	V8	Street Performance Balancer
1973	Mercury	Colony Park	—	5.8L	V8	3 bolt w/counterweight & counter sunk pulley; Street Performance Balancer
1973	Mercury	Cougar	—	5.8L	V8	Street Performance Balancer
1973	Mercury	Marquis	—	5.8L	V8	3 bolt w/counterweight & counter sunk pulley; Street Performance Balancer
1973	Mercury	Montego	—	5.8L	V8	3 bolt w/counterweight & counter sunk pulley; Street Performance Balancer
1972	Ford	Country Sedan	—	5.8L	V8	Street Performance Balancer
1972	Ford	Country Squire	—	5.8L	V8	Street Performance Balancer
1972	Ford	Custom	—	5.8L	V8	Street Performance Balancer
1972	Ford	Custom 500	—	5.8L	V8	Street Performance Balancer
1972	Ford	Galaxie 500	—	5.8L	V8	Street Performance Balancer
1972	Ford	Gran Torino	—	5.8L	V8	Street Performance Balancer
1972	Ford	LTD	—	5.8L	V8	Street Performance Balancer
1972	Ford	Mustang	—	5.8L	V8	Street Performance Balancer
1972	Ford	Ranch Wagon	—	5.8L	V8	Street Performance Balancer
1972	Ford	Ranchero	—	5.8L	V8	Street Performance Balancer
1972	Ford	Torino	—	5.8L	V8	Street Performance Balancer
1972	Mercury	Colony Park	—	5.8L	V8	3 bolt w/counterweight & counter sunk pulley; Street Performance Balancer
1972	Mercury	Cougar	—	—	—	Street Performance Balancer
1972	Mercury	Marquis	—	5.8L	V8	3 bolt w/counterweight & counter sunk pulley; Street Performance Balancer
1972	Mercury	Montego	—	5.8L	V8	3 bolt w/counterweight & counter sunk pulley; Street Performance Balancer
1972	Mercury	Monterey	—	5.8L	V8	3 bolt w/counterweight & counter sunk pulley; Street Performance Balancer
1971	Ford	Country Sedan	—	5.8L	V8	Street Performance Balancer
1971	Ford	Country Squire	—	5.8L	V8	Street Performance Balancer
1971	Ford	Custom	—	5.8L	V8	Street Performance Balancer
1971	Ford	Custom 500	—	5.8L	V8	Street Performance Balancer
1971	Ford	Galaxie 500	—	5.8L	V8	Street Performance Balancer
1971	Ford	LTD	—	5.8L	V8	Street Performance Balancer
1971	Ford	Mustang	—	5.8L	V8	Street Performance Balancer
1971	Ford	Ranch Wagon	—	5.8L	V8	Street Performance Balancer
1971	Ford	Ranchero	—	5.8L	V8	Street Performance Balancer
1971	Ford	Torino	—	5.8L	V8	Street Performance Balancer
1971	Mercury	Colony Park	—	5.8L	V8	3 bolt w/counterweight & counter sunk pulley; Street Performance Balancer
1971	Mercury	Cougar	—	5.8L	V8	3 bolt w/counterweight & counter sunk pulley; Street Performance Balancer
1971	Mercury	Cyclone	—	5.8L	V8	3 bolt w/counterweight & counter sunk pulley; Street Performance Balancer
1971	Mercury	Marquis	—	5.8L	V8	3 bolt w/counterweight & counter sunk pulley; Street Performance Balancer
1971	Mercury	Montego	—	5.8L	V8	3 bolt w/counterweight & counter sunk pulley; Street Performance Balancer
1971	Mercury	Monterey	—	5.8L	V8	3 bolt w/counterweight & counter sunk pulley; Street Performance Balancer
1970	Ford	Country Sedan	—	5.8L	V8	Street Performance Balancer
1970	Ford	Country Squire	—	5.8L	V8	Street Performance Balancer
1970	Ford	Custom	—	5.8L	V8	Street Performance Balancer
1970	Ford	Custom 500	—	5.8L	V8	Street Performance Balancer
1970	Ford	Fairlane	—	5.8L	V8	Street Performance Balancer
1970	Ford	Falcon	—	5.8L	V8	Street Performance Balancer
1970	Ford	Galaxie 500	—	5.8L	V8	Street Performance Balancer
1970	Ford	LTD	—	5.8L	V8	Street Performance Balancer
1970	Ford	Mustang	—	5.8L	V8	Street Performance Balancer
1970	Ford	Ranch Wagon	—	5.8L	V8	Street Performance Balancer
1970	Ford	Ranchero	—	5.8L	V8	Street Performance Balancer
1970	Ford	Torino	—	5.8L	V8	Street Performance Balancer
1970	Mercury	Cougar	—	5.8L	V8	3 bolt w/counterweight & counter sunk pulley; Street Performance Balancer
1970	Mercury	Cyclone	—	5.8L	V8	3 bolt w/counterweight & counter sunk pulley; Street Performance Balancer
1970	Mercury	Montego	—	5.8L	V8	3 bolt w/counterweight & counter sunk pulley; Street Performance Balancer
1969	Ford	Country Sedan	—	5.8L	V8	Street Performance Balancer
1969	Ford	Country Squire	—	5.8L	V8	Street Performance Balancer
1969	Ford	Custom	—	5.8L	V8	Street Performance Balancer
1969	Ford	Custom 500	—	5.8L	V8	Street Performance Balancer
1969	Ford	Fairlane	—	5.8L	V8	3 bolt w/Counterweight & Recessed Pulley; Street Performance Balancer
1969	Ford	Galaxie 500	—	5.8L	V8	3 bolt w/counterweight & counter sunk pulley; Street Performance Balancer
1969	Ford	LTD	—	5.8L	V8	Street Performance Balancer
1969	Ford	Mustang	—	5.8L	V8	3 bolt w/counterweight & counter sunk pulley; Street Performance Balancer
1969	Ford	Ranch Wagon	—	5.8L	V8	Street Performance Balancer
1969	Ford	Ranchero	—	5.8L	V8	3 bolt w/counterweight & counter sunk pulley; Street Performance Balancer
1969	Ford	Torino	—	5.8L	V8	3 bolt w/counterweight & counter sunk pulley; Street Performance Balancer
1969	Mercury	Comet	—	5.8L	V8	3 bolt w/counterweight & counter sunk pulley; Street Performance Balancer
1969	Mercury	Cougar	—	5.8L	V8	3 bolt w/counterweight & counter sunk pulley; Street Performance Balancer
1969	Mercury	Cyclone	—	5.8L	V8	3 bolt w/counterweight & counter sunk pulley; Street Performance Balancer
1969	Mercury	Montego	—	5.8L	V8	3 bolt w/counterweight & counter sunk pulley; Street Performance Balancer
No rows match your filter.

Directly replaces or cross-references 2 part numbers

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

Pioneer — 872009Pioneer — DA-2009HD