12557840 Harmonic Balancer Bolt Performance Parts 12557840 10.9 Grade Upgrade for GM Gen3/4 LS Engines (LS1/2/3/6 LQ4/9) 4.8L-6.2L - Replaces 917-139, Excludes LS7/LS9
US$3.99
Price when purchased online
Free shipping
Free 30-day returns
Sold and shipped by groundr.de
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here.
US$3.99
Price when purchased online
Free shipping
Free 30-day returns
Sold and shipped by groundr.de
Free 30-day returns Details
Product details
| Management number | 237318011 | Release Date | 2026/07/10 | List Price | US$3.99 | Model Number | 237318011 | ||
|---|---|---|---|---|---|---|---|---|---|
| Category | |||||||||
- Precision Fit for GM LS Engines:LaWana 12557840 harmonic balancer bolt directly replaces OEM part, for Gen3/4 LS engines (LS1/LS3/LS6/LQ4/LQ9 & 4.8L-6.2L). Guaranteed compatibility with 30+ variants including LY5/LM7/L96,Excludes LS7 and LS9 models for clear compatibility
- Maintenance and renovation harmonic balancer bolt:10.9-grade high-tensile Replace aging bolts or repair crankshaft damage caused by harmonic balancer failure. Install basic fasteners for the new harmonic balancer (such as lightweight retrofit parts
- Critical Repair/Maintenance Solution:Stop crank seal leaks & harmonic balancer wobble! Essential replacement for worn OE bolts
- Performance Build-Ready Upgrade:Mandatory for LS engine rebuilds/forced induction builds. Secures aftermarket harmonic balancers
- OEM Compatibility & Trusted Performance:Designed with OEM part numbers 12557840 and 917-139, for precise fit and optimal performance in GM harmonic balancer systems
| ASIN | B0F7R9BJJ9 |
|---|---|
| Brand | LaWana |
| Model | 12557840 |
| Head Type | Hex |
| Size Name | M12 |
| Metal Type | Carbon Steel |
| Unit Count | 1.0 Count |
| Part Number | 12557840 |
| Thread Size | M12 |
| Thread Type | Metric |
| Drive System | Torx |
| Finish Types | brushed |
| Manufacturer | LaWana |
| Thread Class | 3A |
| Thread Style | Right Hand, Metric, Full |
| Fastener Size | M12 |
| Fastener Type | Hexagon Bolt |
| Item Hardness | Grade 10.9 |
| Material Type | Carbon Steel |
| Exterior Finish | carbon steel |
| Item Dimensions | 4.8 x 1.7 x 1.6 inches |
| Number Of Items | 1 |
| Thread Coverage | Fully Threaded |
| Screw Head Style | Flat |
| Manufacturer Grade | 10.9 Grade |
| Included Components | bolts |
| Warranty Description | 1 |
Bestseller ranking
Main Bolts & Studs
Customers who viewed this product also viewed
General
Correction of product information
If you notice any omissions or errors in the product information on this page, please use the correction request form below.
Correction Request Form