PCV Hose, Vacuum (on Valve Cover) – 1989-2005 Mazda Miata
Mazda Miata 89-05 (NA/NB)
This is a genuine Mazda part. As these cars get old, some of these places will leak. This hose hardens over time and can cause a small vacuum leak which can lead to idling issues. Many people will start to see cracks on this hose when they look close. Sometimes pulling out the PCV will require you to replace this hose. Make sure to have this on deck when you’re doing PCV service(just in case).
1989-1993, 1994-1997, 1999-2000, 2001-2005