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12557840 Upgrade 12.9 Grade Balancer Bolt for GM Harmonic Balancer Crank Bolt, for All gen III and gen IV LS engines except for LS7/LS9. 4.8L 5.3L 6.0L 6.2L LS1 LS2 LS3 LS6 L99 LM7 LR4 LMG LQ4 LQ9 L96 in Saudi Arabia 12557840 Upgrade 12.9 Grade Balancer Bolt for GM Harmonic Balancer Crank Bolt, for All gen III and gen IV LS engines except for LS7/LS9. 4.8L 5.3L 6.0L 6.2L LS1 LS2 LS3 LS6 L99 LM7 LR4 LMG LQ4 LQ9 L96 in Saudi Arabia 12557840 Upgrade 12.9 Grade Balancer Bolt for GM Harmonic Balancer Crank Bolt, for All gen III and gen IV LS engines except for LS7/LS9. 4.8L 5.3L 6.0L 6.2L LS1 LS2 LS3 LS6 L99 LM7 LR4 LMG LQ4 LQ9 L96 in Saudi Arabia 12557840 Upgrade 12.9 Grade Balancer Bolt for GM Harmonic Balancer Crank Bolt, for All gen III and gen IV LS engines except for LS7/LS9. 4.8L 5.3L 6.0L 6.2L LS1 LS2 LS3 LS6 L99 LM7 LR4 LMG LQ4 LQ9 L96 in Saudi Arabia 12557840 Upgrade 12.9 Grade Balancer Bolt for GM Harmonic Balancer Crank Bolt, for All gen III and gen IV LS engines except for LS7/LS9. 4.8L 5.3L 6.0L 6.2L LS1 LS2 LS3 LS6 L99 LM7 LR4 LMG LQ4 LQ9 L96 in Saudi Arabia 12557840 Upgrade 12.9 Grade Balancer Bolt for GM Harmonic Balancer Crank Bolt, for All gen III and gen IV LS engines except for LS7/LS9. 4.8L 5.3L 6.0L 6.2L LS1 LS2 LS3 LS6 L99 LM7 LR4 LMG LQ4 LQ9 L96 in Saudi Arabia 12557840 Upgrade 12.9 Grade Balancer Bolt for GM Harmonic Balancer Crank Bolt, for All gen III and gen IV LS engines except for LS7/LS9. 4.8L 5.3L 6.0L 6.2L LS1 LS2 LS3 LS6 L99 LM7 LR4 LMG LQ4 LQ9 L96 in Saudi Arabia 12557840 Upgrade 12.9 Grade Balancer Bolt for GM Harmonic Balancer Crank Bolt, for All gen III and gen IV LS engines except for LS7/LS9. 4.8L 5.3L 6.0L 6.2L LS1 LS2 LS3 LS6 L99 LM7 LR4 LMG LQ4 LQ9 L96 in Saudi Arabia

12557840 Upgrade 12.9 Grade Balancer Bolt for GM Harmonic Balancer Crank Bolt, for All gen III and gen IV LS engines except for LS7/LS9. 4.8L 5.3L 6.0L 6.2L LS1 LS2 LS3 LS6 L99 LM7 LR4 LMG LQ4 LQ9 L96

SAR 68
Brand
X4XZ
Weight
300 g
– 1 +

Special Features

  • ✔Compatible with: 917-139 Harmonic Balancer Bolt fit for all Gen 3 and Gen 4 LS engines, including LS1, LS2, LS3, LS6, LQ4, LQ9, and models with 4.8L, 5.3L, 6.0L, 6.2L engines. (Note: Does NOT fit LS7/LS9 models).
  • ✔Exact Specifications: Features M16 x 2.0 thread pitch with an underhead length of 4.05 inches. The Grade 12.9 bolt is finished with an anti-corrosion coating for long-lasting protection.
  • ✔Replace OE# 12557840 LS Harmonic Balancer Bolt, 917-139 Harmonic Balancer Bolt.
  • ✔High-Strength Material: Crafted from high-grade Carbon Steel, heat-treated to achieve a Grade 12.9 rating. This ensures maximum tensile strength, preventing stretch and breakage under high stress.
  • ✔After-Sales Service: We offer 24 hours customer service and 1 year product service, If you are encounter product installation, product quality and other problems, please feel free to contact us.

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