Just had to replace the original Lexus batter in my 05, sc430. Lexus wanted $175 for a new battery plus $60 to install. Instead I went to Sam's/Walmart and purchased and Energizer, Group 48 battery with the same power specs. for $86 and installed it myself in 10 minutes. The Group 48 is listed as the battery for the 430 and it was a perfect fit. :)