Reviewed By Tony F (CEDAR FALLS, IA) Reviewed for a 1997 Dodge Ram —12/19/2014 4:00 AM
Was a basic bolt in, had to replace both O2 sensors, because of their age and the rust. Have seen an improvement in gas mileage.
Reviewed By Caleb C (SAN FRANCISCO, CA) —4/15/2015 11:23 PM
Bolted right on, came with o-rings too! I replaced both upstream and downstream sensors with denso. Cleared my ecu with a harbor freight scanner, smogged my car in CA. Fixed my check engine light for less than -$850! Not bad!!! Thinking of getting aftermarket headers with upgraded exhaust with the money I saved!