cost to replace complete timing belt, water pump, tension pulley and idler asembley
This is googled and from repairpal.com:
The average cost for a Honda Odyssey timing belt replacement is between $730 and $897. Labor costs are estimated between $296 and $374 while parts are priced between $434 and $523
I’d say around $700.
Do shop around both independents and even the dealer. I’ve had the job done at the dealer for less than a local independent shop in the past. This is a pretty common job…but not one you want to “cheap out” on.