Group 24 is the right size. The costco battery is probably a rebranded major brand battery. Make sure it's 650 CCA or higher.
does the "fitman code" have to be exact it's a 23 instead of a 22, that 's all they had in stock, battery is actually a 24F group size. Same as 24, thanks
Take some measurements to see if it will fit the battery tray in engine bay.
Looking for a Used IS 250 in your area?
CarGurus has 5,317 nationwide IS 250 listings starting at $3,396.
Search Lexus IS 250 Questions
Lexus IS 250 Experts
Related Models For Sale
Used Cars For Sale