2005 Scion xB Q&A
2005 Scion xB Question: Timing Chain replacement
No, you don't. Timing chains are not regular maintenance items, and they don't need to be replaced unless there is a repair that needs to be happens. Check your owner's manual. If you have a timing belt, and not a chain, it will need to be replaced at an interval defined by the manufacturer. - matte
The Scion XB has a timing chain. I haven't seen any problems with them, two customers have 100,000 to 130,000 miles on theirs no problems at all. - patrick mannion
I have one customer with 190,000 on the same chain with no problems, not a wear item unless abused. - scvscions
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