ARP 135-2501 Harmonic Balancer Bolt Kit
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The ARP 135-2501 Harmonic Balancer Bolt Kit provides high-strength stainless steel bolts engineered for harmonic balancer installation and repair. These bolts feature a 1/2-20 thread size, a 5/8" socket drive and approximately 1.55" under-head length for proper engagement. The kit includes three fasteners (stock size), fully threaded, with a painted exterior finish and Grade A/Grade 5 ratings for reliable shear strength (approximately 300,000 psi). Item dimensions (packaged) are 9.7 x 5.8 x 1.1 inches and individual item weight is about 0.2 pounds. Material and construction details: stainless steel/alloy steel composition, 12-point head type and screw point style, machine-threaded. Ideal for harmonic balancer repair kits and engine part replacements on compatible vehicles.
- Package Weight: 0.25 pounds
- Fit type: Vehicle Specific
- Part number: 1352501
- ARP Harmonic Balancer Bolt Big Block Chevy P/N 135-2501
Specifications:
| Materials & Construction | |
| Color | Silver |
| Finish Types | Painted |
| Material | Stainless Steel |
| Metal Type | Alloy Steel, Stainless Steel |
| Product Details | |
| Fastener Size | 0.5 inch |
| Fastener Type | Hexagon Bolt |
| Finish Types | Painted |
| Grade Rating | Grade A |
| Head Style | Dome |
| Head Type | 12-point |
| Included Components | Hardware Kits - Other |
| Item Hardness | Grade 5.6 |
| Material Type | Stainless Steel |
| Maximum Shear Strength | Approximately 300,000 psi |
| Metal Type | Alloy Steel, Stainless Steel |
| Number of Pieces | 3 |
| Part Interchange Info | 135-2501 |
| Screw Head Style | Dome |
| Screw Point Style | 12-point |
| Set Name | Harmonic Balancer Bolt Kit |
| Set Screw Thread Type | UNC or UNF |
| Thread Class | 12-point |
| Thread Coverage | Fully Threaded |
| Thread Style | Machine Threaded |
| Thread Type | Unc Or Unf |
| Unit Count | 1.0 Count |
| Warranty Description | Manufacturer warranty |
| Sizing & Dimensions | |
| Height | 1.0000 inches |
| Length | 7.0000 inches |
| Product Dimensions | 9.7 x 5.8 x 1.1 inches |
| Product Weight | 0.5000 |
| Weight | 0.5 pounds |
| Width | 5.0000 inches |
| Technical Specifications | |
| Compatible Groove Diameter | 3.56 Inches |
| Grade Rating | Grade A |
| Item Hardness | Grade 5.6 |
| Maximum Shear Strength | Approximately 300,000 psi |
