Lexus Timing Belt Intervals, Everything You Need To Know For better results when looking up the timing belt service intervals for your Lexus, you will need to know your vehicle’s engine size to use this table. Once you know, you can determine your Lexus timing belt service interval by using the first table and the reference key. Be sure to look at the second table to see whether or not the engine is interference-fit. Lexus Timing Belt Service Interval Chart Engine Reference Key, Remarks 2.5L {37} 3.0L Inline 6 {26} 3.0L V6 {52} 3.3L V6 Replace Every 90,000 Miles Or 108 Months 4.0L {26} 4.3L Replace Every 90,000 Miles Or 108 Months 4.7L Replace Every 90,000 Miles Or 108 Months...