chain
It has a timing chain that requires no maintenance.
It has a timing chain not belt
No. It has enclosed timing chain. Does not require replacement.
The 2011 Toyota Sienna has 16 valves.
Nothing because it has a chain. No Belt!!!I disagreeSienna 1998-2006 V6 Belt2011 4 Cylinder Chain2007-2011 V6 Chainhttp://www.tacomaworld.com/forum/technical-chat/19496-timing-belt-timing-chain-all-toyotas-toyota-com.html
The 2011 Toyota Sienna is a gas-powered vehicle.
The 2011 Toyota Sienna has an inline 4 engine.
A chain. The only engine Toyota makes anymore with a timing belt is the V8 engines in the Trucks, Tunda and Sequoia and 4Runner
The 2011 Toyota Sienna has a 6-speed shiftable automatic.
The curb weight of the 2011 Toyota Sienna is 4275 lbs..
The 2011 Toyota Sienna has double overhead cam (DOHC).