National Axle Differential Repair Sleeve,Engine Auxiliary Shaft Repair Sleeve P/N:99166
Give a new seal a smooth surface to ride on without replacing a worn shaft. The National Camshaft Repair Sleeve, part number 99139, fits many vehicles. These include the 1976-2003 Honda Accord and 1975-2003 Honda Civic. See the Buyer's Guide tab for the full list.
Over time, a seal lip can wear a groove into the shaft it rides on. A new seal installed on that grooved surface may still leak. A repair sleeve is designed to press over the worn area and give the new seal a fresh contact surface, so the original shaft can stay in service.
Signs this part may be needed include oil seepage at a shaft seal or a visible groove worn into the shaft where the old seal lip rode. A repair sleeve is typically installed together with a new seal. Follow the vehicle service information for the correct procedure.
Interchange: N99139 · NN99139 · KWK99139 · 99139RS
This part cross-references / interchanges with the following part numbers:
What does this repair sleeve do?
It presses over the worn seal contact area on a shaft to give a new seal a smooth surface to ride on. It is designed to let you keep the original shaft instead of replacing it.
Is this the same part as an engine camshaft repair sleeve?
Yes. Engine camshaft repair sleeve is another name for this part. National 99139 is also listed as a differential repair sleeve and an engine auxiliary shaft repair sleeve.
How many do I need?
Most listed applications use one. Some list two, such as the 1995-1997 Honda Accord (V6-2.7L). Check the Buyer's Guide tab for your vehicle.
What signs suggest a repair sleeve may be needed?
Oil seepage at a shaft seal, or a groove worn into the shaft where the old seal lip rode, may indicate the need for one. Diagnose the leak source before replacing parts.
Which part numbers does National 99139 interchange with?
It interchanges with N99139, NN99139, KWK99139 and 99139RS.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.