Hi, we are trying to find out the right gapping for spark plugs for our 2014 CX9. Does anyone know the correct gapping and have a recommendation for plugs?

 

To be accurate with an answer as you worded it....You need to post the spark plug brand name and the type and or part number of your choice in spark plugs.
Or read the box the spark came in.

 

I should also caution you that some sparkplug unless you have a proper spark plug gapping tool and not the usually universal one from the 1960's you could damage seen or unseen spark plug. If you say crack the insulator and may not see it the spark plug may fire just fine for a while and then it won't. you will get a check engine light a slight miss in the ignition that the sound will be apparent out the exhaust you MPG will go down and you may get more then 1 DTC along with a check engine light.

Best advice is to install them as they came from the spark plug manufacture that using their spark plug application guide ONLY (no other guide) you should not need to adjust the gap on most of the types available for your Mazda.
Many of the higher end spark plugs actually require a 2 stepped gaped which most don't even know how to do properly and without damaging the spark plug.

 

My husband is just wondering as there are several that say they are the right fit for my car, however, the gaps vary so he is not sure which one would be the best fit.

 

Did you read the response just before your question?Post no3.

 

LTR6BP13 - NGK Platinum Spark Plug 1.3mm