just go to a REAL auto parts store, like on of those old school mom and pop places, tell them you need a vaacum check valve. They will know what you want

 

like "002 auto parts" they seem to actually know the parts in cars lol i regret the day i walked into R&S Strauss and asked for a "u-bolt for my leaf springs" figuring it would be in an aisle, this kid comes back with this little old exhaust u-bolt and asks if it will work....i slapped my forehead and walked out quickly.



kevin.