Jims Cam Cover Bushing 25581-70 for Big Twin 1970-1999
$85.70
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Jims Cam Cover Bushing 25581-70 for Big Twin 1970-1999
$85.70
Manufactured from premium solid bronze bar stock, this precision cam cover bushing provides optimal durability and wear resistance for Harley-Davidson valvetrain assemblies. Each unit is machined in a single operation to an exacting tolerance of 0.0002 inches, ensuring exceptional concentricity and consistent operational clearance.
Designed with a machined lead-in for straightforward pressing into the cam cover, it directly replaces OEM part number 25581-70. Sized with a 30.5 mm outer diameter and a 25.4 mm inner diameter, it delivers dependable performance in demanding Big Twin engine rebuilds.
Key Features
| Brand | Jims |
| Manufacturer Part Number | 25581-70 |
| OEM Replacement Number | 25581-70 |
| Material | Solid bronze bar stock |
| Outer Diameter | 30.5 mm |
| Inner Diameter | 25.4 mm |
| Machining Tolerance | 0.0002 in |
| Compatible Installation Tool | JM-1012-70TB |
| Compatible Reamer Tool | JM-1023-70 |
| Country of Origin | United States |
| Estimated Shipping Weight | 0.1 kg |
Highlights
- Machined from solid bronze bar stock
- Single-operation machining with .0002″ precision tolerance
- Machined lead-in design for smooth, accurate pressing
- Direct OEM replacement for # 25581-70
- Made in the USA
Compatibility
Fits Harley-Davidson Big Twin engine models from 1970 to 1999.
How to use
Press into the cam cover using installation tool JM-1012-70TB. Size to final internal clearance using reamer JM-1023-70 after installation.
Downloads
Frequently asked questions
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