This NSK A/C Drive Belt Idler Pulley fits your 2000 1999 1998 Lexus GS400 and is perfect for a tune up or performance upgrade. .
NSK AC Drive Belt Idler Pulley for 1990-2000 Lexus LS400 - Belts Cooling zs
NSK AC Drive Belt Idler Pulley for 2002-2010 Lexus SC430 - Belts Cooling zi
NSK AC Drive Belt Idler Pulley for 2000-2009 Toyota Tundra - Belts Cooling gq
NSK AC Drive Belt Idler Pulley for 2001-2006 Lexus LS430 - Belts Cooling hl
NSK AC Drive Belt Idler Pulley for 2001-2007 Lexus GS430 - Belts Cooling nq