I bought a K&N filter for my 05 660. It doesnt seem to fit very well in the intake box. Am I supposed to take the Box off and mount it to the air box tubes or what? It just kind of sits in there now. It came with hose clamps? Let me know. thanks.
Link to the product you bought?
There's a number of K&N filters available, mine was a drop in and could be a pain to get to fit right. Others require an adapter plate between the air tubes and filter. If it came with clamps most likely it uses an adapter plate of sorts.
which means its basically a stocker with a K&N badge on it. It should slide in just like the original but it requires the lid to go back on.....a waste of money really...sell it and by the adapter/k&n filter. Its considerably larger and allows more airflow but will require a rejet. good luck,