Ordering O2 for my Highlander and the Densoautoparts.com has 2 sets
upstream called A/F and downstream called O2. Never knew they were called such, always thought they were O2s.
Anyway, would replacing the upstream be fine or would replacing all be needed.
upstream called A/F and downstream called O2. Never knew they were called such, always thought they were O2s.
Anyway, would replacing the upstream be fine or would replacing all be needed.