If you are interested, you can go to e-bay, type in Dodge 4500 transmission filter in the search and find a less expense filter. I have one and the pan gasket at a much lower price than Dodge. The filter material looks and feels like what is in the Dodge filter. They look the same. Any of you that are still under warranty might not want to do this. I'll be changing mine this weekend if the oil I ordered gets here. I can't find the Mobil 3309 locally so I've ordered it over the internet. Bought a case for $94. 53 including the shipping.