Find the Transmission Filters you need when flushing the transmission in your 2001-2004 Chevy/GMC 6.6L LB7 Duramax. For vehicles equipped with an internal or external spin-on filter, the replacement filters offered are built to meet or exceed the factory specs. There are filters available for both the deep transmission pans and OE pan. Industry-leading manufacturers such as BD-Power, Mag Hytec, and AFE are offered