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Michigan Motorsports LS1 LT1 Harmonic Balancer Bolt Crank Damper Crankshaft Pulley LS LT LSX 4.8 5.3 5.7 6.0 6.2 LS1 LM7 LR4 LQ4 LS6 L59 LQ9 LM4 L33 LS2 LH6 L92 L76 LY2 LY5 LC9 LFA LH8 LMG LS3 GM OEM

KWD 6
Weight
258 g
– 1 +

Special Features

  • Michigan Motorsports LS1 LT1 Harmonic Balancer Crank Crankshaft Pulley Bolt. GM requires a new balancer bolt each time the engine is disassembled and the balancer is reinstalled. This is a genuine GM OEM bolt. Made in the USA!!! Will fit all GM Gen 3, 4, & 5 series engines
  • Does not fit LS7/LS9/LT4/LT5 engines
  • Compatible with part numbers: 12557840 917-139 Harmonic Balancer Bolt
  • Sold Individually
  • Direct replacement for a proper fit. No special tools required. Easy to install.

Description

GM requires a new balancer bolt each time the engine is disassembled and the balancer is reinstalled. This made in the USA bolt is a direct replacement for the GM 12557840 bolt. Will fit all GM Gen 3, 4, & 5 series engines (except LS7/LS9/LT4/LT5)

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