I have a late 1973 240z air filter box.  I've been restoring the car for a while.  I am trying to locate an air filter.  I did not realize it but evidently there are two (2) different sizes.  One that is approx. 2.375 inches high and another that is about .25 inches shorter.  I am not having a great deal of luck locating the correct air filter.  Does anyone have a current source for these air filters.  I believe they were used on late '73 (240 Zs) and 1974 260 Zs. I have tried all of the usual suspects (zcardepot, thezstore, ...etc)

Thanks in advance for your assistance.

You can go down to your local AutoZone, O'Reilly's, etc... and try an STP SA3378. 

Worse case, if it doesn't fit, just take it back to the store for a refund.

Edited December 14, 20222 yr by DatsunZGuy
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DatsunZguy - Thanks for the quick response.  I had previously checked oreilly, autozone, napa, and advanced auto - all of those sites indicated out of stock conditions.  Having said that armed with the specific part number I did call both Oreilly and autozone and both said that they would try to special order it.  So, thank you for the part number lead.  It may take a few days, but I will update this thread if they are able to fill the order.

SUCCESS - Autozone was able to special order the STP air filter - #SA3378, and it fits my airbox.  I have not heard back from O'reilly's yet.  Once again thank you DatsunZguy.
Update 12/21/22:

Unfortunately O'reillys was not able to locate a suitable filter.  They were as always very nice.  The manager took the time to take the measurements and search for similar filters.  He did come up with the K&N filter that zKars mentions below but said that all of his sources claimed that it was out of stock.

Edited December 21, 20222 yr by qz16

Glad you found one. Getting a bit tricky to source.

There is a K&N Filter for the 240 as well.  E2910 I believe.  

I’m no great fan of the K&N filter, but this particular filter body is rubber and a tad thicker than stock,  so if your housing is lacking the thin stock rubber strips that seal against usual OEM steel filter, these would be ideal. 

 

 

Edited December 20, 20222 yr by zKars

As always, thanks zkars