http://www.skf.com/us/products/seal...ear-sleeves/skf-speedi-sleeve/index.html

Post your engine make/size and maybe someone will post a part number for the appropriate Speedi-Sleeve?

Also sold as Harmonic Balancer Repair Sleeve by other manufactures, such as National.

Similar repair sleeves are also commonly used on axles where axle seals have worn grooves axles.