This countershaft oil seal is found behind the front sprocket on the models listed below.
This is a high quality new seal produced in Taiwan. When it comes to rubber parts and seals it's generally better to install a brand new part instead of using a NOS part which has hardened due to age.
A great way to isolate where an oil leak is coming from is to clean the area thoroughly, put some baby powder on the area you suspect it's coming from, then go for a 5-10 minute ride. Voila, the leaks location is revealed! Clean everything thoroughly and install the new seal with a deep socket with the same outer diameter as the seal or a seal driver. Make sure to push it in evenly. An oil tight engine puts the mind at ease and it keeps the engine lubricated!
*Sometimes a light coating of three-bond or hondabond is necessary to keep the seal from popping back out if you have a recurring problem. We have Hondabond available.
Replaces Honda Part Numbers: 91206-413-003, 91206-MC0-000
Dimensions: 34X63X12
Material: NBR (Nitrile)

Fits Honda:
CB400A Hondamatic - 1978
CB400T Hawk - 1980-1981
CB400TI Hawk I - 1978-1979
CB400TII Hawk II - 1978-1979
CM400A Hondamatic - 1979-1981
CM400C Custom - 1981
CM400E - 1980-1981
CM400T - 1979-1981
CB450SC Nighthawk - 1982-1983 + 1985-1986
CB450T Hawk - 1982
CM450A Hondamatic - 1982-1983
CM450C Custom - 1982
CM450E - 1982-1983
CMX450C Rebel - 1986-1987