No, it has a timing chain.
The Lexus GS300 qualifies as a midsize sedan. This is a great car, and it has only improved with each new generation Lexus has released. Its latest design was in 2006; however, the 2006 model was discontinued after a year and then rereleased as the GS350. Lexus made the GS350 in a response to the consumer complaints about the lack of power in the GS300. The GS350 was released with a 3.5 Liter V6 engine. Both the GS300 and the GS350 are identical except for the beefed up engine. Hope this helps.
PLIZ HELP How can i reset the injector maintenance required in lexus gs350 2012
The 2014 Lexus IS-350 is 15 ft. 3.7 in. (183.7 in.) long.
The 2014 Lexus IS-250 is 15 ft. 3.7 in. (183.7 in.) long.
The 2014 Lexus IS-F is 15 ft. 3.5 in. (183.5 in.) long.
The 2014 Lexus GS-450H is 15 ft. 10.7 in. (190.7 in.) long.
The 2014 Lexus RX-450H is 15 ft. 7.8 in. (187.8 in.) long.
The 2014 Lexus LX-570 is 16 ft. 5 in. (197 in.) long.
The 2014 Lexus GX-460 is 15 ft. 9.2 in. (189.2 in.) long.
The 2014 Lexus RX-350 is 15 ft. 7.8 in. (187.8 in.) long.
The 2014 Lexus ES-300H is 16 ft. 0.7 in. (192.7 in.) long.