NA CX-5 with Cylinder Deactivation Engine Repairs - Report In

[Greg_J]

Thanks for the update. If you can review the invoice and find the part number of the replacement cylinder head, someone here might be able to verify if the head is the revised one.

I don't really understand why you guys think Mazda has started using revised/redesigned cylinder heads in production..?
The latest TSB clearly indicates that it is applicable for even the 2022 model (I am attaching the screenshot).
My 2022 model CX5 was built 12/21 (the sticker on the engine shows 12/21 as well), but technically it is a 2022 model.
In my understanding, based on the latest TSB even the 2022 CX-5 model has the old defective cylinder head.
Correct me if I am wrong.

 

[cz5gt]

the date in red shows the updated text in red. It doesnt mean thst cars made on that date are affected. The applicable models years are listed.
2022 models are not affected based on the bulletin.

 

[edmaz]

... If you can review the invoice and find the part number of the replacement cylinder head, someone here might be able to verify if the head is the revised one.

The part number that @JRMMTB just posted is the same one that's been sent out ever since Mazda packaged all of the individual valve components into a single head unit, as described in their TSBs.

And once again, I've never seen anything from Mazda confirming that this NA head has had any changes made to it over time, as they have done with the turbo head. And that's probably why his dealer waffled with the answer - he just doesn't know.

 

[Mulligan]

...find the part number of the replacement cylinder head, someone here might be able to verify if the head is the revised one.

An earlier report in a related thread also lists PYY4-10-SJ0 as the replacement cylinder head for a 2018.

Per realmazdaparts.com and mazda-parts.com, PYFA-10-100E is the part number of the cylinder head for the 2018 CX-5. When you look up PYY4-10-SJ0 and run the checker to see whether that p/n fits the 2018 CX-5, it says "This part does not fit your 2018 Mazda CX-5."

That suggests PYY4-10-SJ0 is different from the original head. I say "suggests" because part number changes aren't always associated with physical changes in a part. Sometimes it's just a bookkeeping thing or indicative of a change in the supply chain.