This doesn't apply to the 2007 Burgman 400
The Burgman AN400 K7 uses a:
Oil filter 16510-05240
The o-rings are the same as shown:
09280-13004 & 09280-54001
Here is site that you can buy them from and it has a good drawing of the oil pump assembly. Also note the location the oil drain plug on the 2007, if you look on the left side of the bike directly opposite the oil sight glass you will see a 17MM plug facing you, that is the oil drain plug. They also have clothing and other accessories for a good price.
http://www.suzukipartshouse.com/
The shipping is high so I ordered my o-rings and filters along with a new Tour Master Intake Jacket for a great price.
on edit: The 2007 Burgman AN 400 K7 uses 1200 ml oil without filter change and 1300ml with filter change, not 1900ml or 2 full quarts as the illustration calls for. Of course you will need to buy 2 quarts since a quart is only 946 ml.
Don