I plan to replace the engine air filters (2) and cabin air filter soon in our 2013 LS 460. I'm not quite sure which part number to go with. Two different threads refer to different part numbers for the 2007+ LS:

jlawr said 17801-38010 here:
https://www.clublexus.com/forums/ls-...ir-filter.html

Tec80 points to 17801-0V020:
https://www.clublexus.com/forums/ls-...r-box-mod.html

Am planning to get the following cabin air filter. Thank goodness I came across a thread that mentioned setting AC to recirculate before swapping out the cabin filter. For some reason, the 2013 Owner's Manual PDF from the Lexus Drivers site doesn't go over anything about replacing the filters.

Thanks for the help, everyone!

 

Looks like section 6-3 does go over the cabin air filter in the glove box and the one in the trunk for the rear AC unit. Still no mention of the engine air filters, which should be pretty straight forward but there are no part numbers listed for anything in the manual. I may just call Lexus in the morning to get the part numbers for everything and buy cheaper elsewhere.

 

Used my subscription to AllDataDIY and confirmed the following part numbers:

(2) Engine air filters (17801-0V020)
Cabin air filter (87139-50100)
Rear AC air filter (87139-50080)

 

Go with K&N filters. I use them on my 2013 ls460 f sport.

 

I picked up a couple of Toyota 17801-38011 air filters at Toyota dealership for my 2013 LS. They fit perfectly.