It's located on the bottom of the transmission behind the front transmission mount.
Replacement is moderately difficult. It requires disconnecting the transmission from the sub-frame, lifting the transmission a little, then removing the front mount. It's best done with the van on a hoist.
Inside the transmission.
a illustation of odyssey 2006 engine
The transmission serial number on a Honda Odyssey is located on the side of the transmission stamped on a tag. This is important when ordering replacement parts or completing repairs.
The 2008 Honda Odyssey has a 5-speed automatic.
The 2013 Honda Odyssey has a 5-speed automatic.
The 2009 Honda Odyssey has a 5-speed automatic.
The 2007 Honda Odyssey has a 5-speed automatic.
The 2001 Honda Odyssey has a 4-speed automatic.
The 2012 Honda Odyssey has a 5-speed automatic.
The 2005 Honda Odyssey has a 5-speed automatic.
The 2003 Honda Odyssey has a 5-speed automatic.
The 2014 Honda Odyssey has a 6-speed automatic.