HomeEngine > Cylinder Block ComponentsDayco PB1050ST Engine Harmonic Balancer
Part #: PB1050ST

Dayco PB1050ST Engine Harmonic Balancer

Street Performance Balancer
⚙️ 132 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Street Performance Balancer
🚗Fitment: Chevrolet and GMC, Bel Air, C10, C1500, C20, C20 Suburban, C2500, C2500 Suburban, C30, C3500, Caprice, El Camino, G10, G20, G30, Impala, Jimmy, K10, K10 Suburban, K1500, K1500 Suburban, K20, K20 Suburban, K2500, K2500 Suburban, K30, K3500, K5 Blazer, Malibu, Monte Carlo, P10, and P30
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Overview of Dayco Street Performance Balancer PB1050ST

The Dayco Street Performance Balancer PB1050ST is engineered for Chevrolet and GMC vehicles requiring precise engine harmonic balancing. Designed to reduce crankshaft vibration, this balancer supports smooth engine operation in models like the Chevrolet C10, Impala, and GMC K1500.

  • Ring weighted counterbalance for improved vibration control
  • Cast iron outer ring for durability and wear resistance
  • 3 bolt hole configuration for secure mounting
  • Overall outside diameter of 7.953 inches (202.00 mm)
  • Crank bore diameter of 1.245 inches (31.60 mm)
  • Includes timing marks for accurate engine timing
  • No integrated pulleys or crank trigger/exciter plate

Detailed Product Features and Specifications

The PB1050ST harmonic balancer features a ring weighted counterbalance design that helps minimize crankshaft vibrations, enhancing engine longevity and performance. Its cast iron outer ring provides robust construction to withstand the stresses of engine operation. The balancer has a 3 bolt hole pattern, ensuring compatibility with a range of Chevrolet and GMC engines. The crank bore measures 1.245 inches (31.60 mm), fitting precisely on the crankshaft. The overall width is 2.343 inches (59.50 mm), and the nose outside diameter is 1.762 inches (44.75 mm). This balancer includes timing marks to assist with proper engine timing during installation and maintenance.

About the Street Performance Balancer Product Line

The Dayco Street Performance Balancer line is designed to provide reliable harmonic balancing solutions for street-driven vehicles. This product line focuses on delivering consistent vibration dampening and durability for engines used in daily driving and light performance applications. The PB1050ST is part of this line, offering a balance of performance and longevity for Chevrolet and GMC trucks and cars.

Compatible Vehicles and Applications

This harmonic balancer is compatible with a variety of Chevrolet and GMC models, including but not limited to:

  • Chevrolet Bel Air, C10, C20, C30, Caprice, El Camino, Impala, Malibu, Monte Carlo
  • GMC C1500, C2500, C3500, G10, G20, G30, Jimmy, K5 Blazer, K10, K20, K30, K1500, K2500, K3500
  • Suburban variants of C20, C2500, K10, K20, K1500, K2500
  • P10 and P30 models

Common Issues Addressed by the PB1050ST Harmonic Balancer

  • Reduces crankshaft vibration that can cause premature engine wear
  • Helps maintain accurate engine timing with integrated timing marks
  • Prevents harmonic resonance that may lead to crankshaft damage
  • Supports smooth engine operation in Chevrolet and GMC trucks and cars
  • Improves overall engine balance for better performance and longevity

Installation Notes and Tips

The Dayco PB1050ST harmonic balancer requires precise installation to ensure proper function. Note that installation hardware and woodruff key are not included and must be sourced separately. Use the timing marks on the balancer to align the engine timing accurately. Verify the 3 bolt hole pattern matches your engine’s crankshaft flange. Proper torque specifications should be followed to secure the balancer without causing damage.

Quality Assurance and Warranty

Dayco manufactures the PB1050ST harmonic balancer to meet industry standards for durability and performance. The cast iron outer ring and ring weighted design contribute to its reliability under normal operating conditions. Warranty details should be confirmed with the manufacturer or distributor, as they may vary by region and application.

BrandDayco
Part NumberPB1050ST
PositionStreet Performance Balancer
Bolt Hole Quantity3
Counterweight BalanceRing weighted
Crank Bore1.245
Crank Bore31.60
Crank Trigger/Exciter PlateNo
Hardware IncludedNo
Installation Instructions IncludedNo
Nose Outside Diameter1.762
Nose Outside Diameter44.75
Number of Integrated Pulleys0
Outer Ring MaterialCast iron
Overall Outside Diameter202.00
Overall Outside Diameter7.953
Overall Width2.343
Overall Width59.50
Ring Width1.523
Ring Width38.68
Timing MarksYes
Woodruff Key IncludedNo

This part fits 132 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersPositionNotes
1980ChevroletC106.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1980ChevroletC206.6LV8N/AStreet Performance Balancer
1980ChevroletC20 Suburban6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1980ChevroletG206.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1980ChevroletG306.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1980ChevroletK106.6LV8N/AStreet Performance Balancer
1980ChevroletK206.6LV8N/AStreet Performance Balancer
1980ChevroletK206.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1980ChevroletK20 Suburban6.6LV8N/AStreet Performance Balancer
1980ChevroletK20 Suburban6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1980ChevroletK306.6LV8N/AStreet Performance Balancer
1980GMCC15006.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1980GMCC2500 Suburban6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1980GMCG25006.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1980GMCG35006.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1980GMCK15006.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1980GMCK1500 Suburban6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1980GMCK25006.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1980GMCK2500 Suburban6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1980GMCK35006.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1979ChevroletC106.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1979ChevroletC206.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1979ChevroletC20 Suburban6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1979ChevroletG206.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1979ChevroletG306.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1979ChevroletK106.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1979ChevroletK10 Suburban6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1979ChevroletK206.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1979ChevroletK20 Suburban6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1979ChevroletK306.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1979ChevroletK5 Blazer6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1979GMCC15006.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1979GMCC25006.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1979GMCC35006.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1979GMCG15006.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1979GMCG25006.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1979GMCG35006.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1979GMCJimmy6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1979GMCK15006.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1979GMCK1500 Suburban6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1979GMCK25006.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1979GMCK2500 Suburban6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1979GMCK35006.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1978ChevroletC106.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1978ChevroletC206.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1978ChevroletC20 Suburban6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1978ChevroletC306.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1978ChevroletG206.6LV8N/AStreet Performance Balancer
1978ChevroletG306.6LV8N/AStreet Performance Balancer
1978ChevroletK106.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1978ChevroletK10 Suburban6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1978ChevroletK206.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1978ChevroletK20 Suburban6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1978ChevroletK306.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1978ChevroletK5 Blazer6.6LV8N/AStreet Performance Balancer
1978GMCG256.6LV8N/AStreet Performance Balancer
1978GMCG356.6LV8N/AStreet Performance Balancer
1978GMCJimmy6.6LV8N/AStreet Performance Balancer
1977ChevroletC106.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1977ChevroletC206.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1977ChevroletC20 Suburban6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1977ChevroletC306.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1977ChevroletG206.6LV8N/AStreet Performance Balancer
1977ChevroletG306.6LV8N/AStreet Performance Balancer
1977ChevroletK106.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1977ChevroletK10 Suburban6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1977ChevroletK206.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1977ChevroletK20 Suburban6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1977ChevroletK306.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1977ChevroletK5 Blazer6.6LV8N/AStreet Performance Balancer
1977ChevroletP106.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1977GMCG256.6LV8N/AStreet Performance Balancer
1977GMCG356.6LV8N/AStreet Performance Balancer
1977GMCJimmy6.6LV8N/AStreet Performance Balancer
1976ChevroletC106.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1976ChevroletC206.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1976ChevroletC20 Suburban6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1976ChevroletC306.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1976ChevroletCaprice6.6LV8N/AStreet Performance Balancer
1976ChevroletEl Camino6.6LV8N/AStreet Performance Balancer
1976ChevroletG106.6LV8N/AStreet Performance Balancer
1976ChevroletG206.6LV8N/AStreet Performance Balancer
1976ChevroletG306.6LV8N/AStreet Performance Balancer
1976ChevroletImpala6.6LV8N/AStreet Performance Balancer
1976ChevroletK106.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1976ChevroletK10 Suburban6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1976ChevroletK206.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1976ChevroletK20 Suburban6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1976ChevroletK5 Blazer6.6LV8N/AStreet Performance Balancer
1976ChevroletMalibu6.6LV8N/AStreet Performance Balancer
1976ChevroletMonte Carlo6.6LV8N/AStreet Performance Balancer
1976ChevroletP306.6LV8N/AStreet Performance Balancer
1976GMCG156.6LV8N/AStreet Performance Balancer
1976GMCG256.6LV8N/AStreet Performance Balancer
1976GMCG356.6LV8N/AStreet Performance Balancer
1976GMCJimmy6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1975ChevroletBel Air6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1975ChevroletCaprice6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1975ChevroletEl Camino6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1975ChevroletG206.6LV8N/AStreet Performance Balancer
1975ChevroletG306.6LV8N/AStreet Performance Balancer
1975ChevroletImpala6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1975ChevroletK106.6LV8N/AStreet Performance Balancer
1975ChevroletK10 Suburban6.6LV8N/AStreet Performance Balancer
1975ChevroletK206.6LV8N/AStreet Performance Balancer
1975ChevroletK20 Suburban6.6LV8N/AStreet Performance Balancer
1975ChevroletK5 Blazer6.6LV8N/AStreet Performance Balancer
1975ChevroletMalibu6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1975ChevroletMonte Carlo6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1975GMCG256.6LV8N/AStreet Performance Balancer
1975GMCG356.6LV8N/AStreet Performance Balancer
1975GMCJimmy6.6LV8N/AStreet Performance Balancer
1974ChevroletBel Air6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1974ChevroletCaprice6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1974ChevroletEl Camino6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1974ChevroletImpala6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1974ChevroletMalibu6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1974ChevroletMonte Carlo6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1973ChevroletBel Air6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1973ChevroletCaprice6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1973ChevroletImpala6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1973ChevroletMonte Carlo6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1972ChevroletBel Air6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1972ChevroletMonte Carlo6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1971ChevroletBel Air6.6LV8N/AStreet Performance Balancer
1971ChevroletCaprice6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1971ChevroletImpala6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1971ChevroletMonte Carlo6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1970ChevroletCaprice6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1970ChevroletEl CaminoCustom6.6LV8N/AStreet Performance Balancer
1970ChevroletImpala6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer
1970ChevroletMonte Carlo6.6LV8N/A8 In. Diameter, w/Counterweighted Ring; Street Performance Balancer

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

This part directly replaces or is cross-referenced with the following part numbers:

594-016S

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