ACDelco GM Original Equipment Crankshaft Balancer
OE
Pack of 1

ACDelco GM Original Equipment Crankshaft Balancer

GM Part #12694933

ACDelco Part #12694933

MSRP$86.83*

ACDelco GM Original Equipment Engine Harmonic Balancers help reduce torsional vibrations by connecting to the crankshaft of your vehicle's engine.

  • Connects to the crankshaft of your vehicle's engine to help reduce vibration
  • GM-recommended replacement part for your GM vehicle's original factory component
  • Offering the quality, reliability, and durability of GM OE

Pack of 1

About this product

ACDelco GM Original Equipment Engine Harmonic Balancers help reduce torsional vibrations by connecting to the crankshaft of your vehicle's engine. They serve as pulleys for the engine accessory drive belts, and are GM-recommended replacements for your vehicle's original components. These original equipment harmonic balancers have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

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  • Connects to the crankshaft of your vehicle's engine to help reduce vibration
  • GM-recommended replacement part for your GM vehicle's original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured to GM OE specification for fit, form, and function

Pulley Groove Quantity4
Mounting Hole Quantity1
Depth1.14 in / 29 mm
Outside Diameter7.2 in / 183 mm
Inside Diameter0.87 in / 22 mm
ClassificationOE
Drive Belt TypeSerpentine
Keyway TypeYes
Bolt And Washer IncludedNo
Center Bolt Length3.03 in / 77 mm
Center Bolt Thread TypeFine

24 Months/Unlimited Miles Limited Warranty for Parts (plus Labor if installed by a GM dealer)

Please visit our warranty page on Gmparts.com for full warranty details.

Good Maintenance Practices:

  • Before purchasing and installing an engine harmonic balancer, make sure it is the correct size and fit for your vehicle.
  • Check the harmonic balancer for excessive movement or wobble.
  • Check for uneven wear on the drive belt, which can indicate that the balancer pulley is out of alignment.
  • Have your vehicle inspected as soon as possible if the 'Service Engine Soon' light illuminates.
  • Have your vehicle inspected immediately if the 'Service Engine Soon' light flashes rapidly, as this could indicate an engine misfire condition which may damage your engine and/or engine emission components.
  • Regularly inspect engine harmonic balancers for signs of damage or wear, and replace them if signs of damage are found.

Signs of wear for engine harmonic balancers include but are not limited to:

  • Engine vibration
  • Excessive drive belt noise
  • Balancer wobble
  • Abnormal sounds
  • Reduced engine power
  • Unusual odors while the engine is operating

ModelBody StyleTrimYear(s)
TrailblazerACTIV, LS, LT, RS2021

Frequently Asked Questions

Yes. To change the balancer, a special puller and some mechanical knowledge are needed.