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
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$12.99
Price when purchased online
Free shipping
Free 30-day returns
Sold and shipped by kongress.clairglobal.com
Free 30-day returns Details
Product details
| Management number | 233917469 | Release Date | 2026/06/27 | List Price | $5.20 | Model Number | 233917469 | ||
|---|---|---|---|---|---|---|---|---|---|
| Category | |||||||||
- ✔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.
| ASIN | B0FS1WCJPG |
|---|---|
| Brand | X4XZ |
| Model | 12557840 |
| Head Type | Hex |
| Size Name | M16x2 |
| Metal Type | Carbon Steel |
| Unit Count | 1.0 Count |
| Part Number | X4XZ-12557840 |
| Thread Size | M16 x 2 |
| Thread Type | Metric |
| Finish Types | Painted |
| Manufacturer | X4XZ |
| Thread Class | 12.9 |
| Thread Style | Right Hand, Coarse, Partially Threaded, Metric |
| Fastener Size | M16 x 2 |
| Fastener Type | Hexagon Bolt |
| Item Diameter | 16 Millimeters |
| Item Hardness | Grade 12.9 |
| Material Type | 12.9 grade |
| Exterior Finish | Painted |
| Number Of Items | 1 |
| Thread Coverage | Partially Threaded |
| Screw Head Style | Hex |
| Manufacturer Grade | Grade 12.9 |
| Included Components | X4XZ-12557840 Upgrade 12.9 Grade Balancer Bolt |
| Warranty Description | 1 YEAR |
| Compatible Groove Diameter | 2 Inches |
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