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LS LT Harmonic Balancer Pulley Install Tool LS1 LT1

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LS / LT Harmonic Balancer Install Tool

Compatible with all GM LS & LT series engines 1997-current (Gen 3, 4, & 5)

  • Made in the USA threaded stud
  • Tool threads into crankshaft and pushes the crankshaft pulley into position
  • Package includes: 1 (grade 8.8) threaded stud, 2 washers, & 1 flange nut
  • Install tool is NOT compatible with Gen 2 LT1 5.7 engines (1992-1997)

More Information

Bullet Point 1 Made in the USA threaded stud
Manufacturer Part Number 551141
UPC 730792485371
Weight 0.810000
ICT Manufacturer ICT Billet
Length Inches 2
Width Inches 8
Height Inches 1

WARNING - This product can expose you to chemicals including lead, which is known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to


ALUMINUM: Most of the aluminum alloys used today contain some level of lead, usually less than .1%. Lead is known to the state of California to cause cancer and reproductive harm. Most aluminum alloys are physiologically inert in their solid form, and the lead is contained within, however user-generated dust and/or fumes may pose a hazard if inhaled or ingested. Heating beyond a certain temperature may also provide avenues for exposure.


STEEL (steel bolts):  Steel is an iron alloy with several metals including Nickel and Chromium. Both Nickel and Chromium are known to the State of California to cause cancer and reproductive harm, respectfully. This warning applies to stainless steels as well.