ATP B-221 Automatic Transmission Filter Kit Premium filter specified to OE levels of filtration and fluid flow Ensures transmission longevity when replaced at regular service intervals Includes 3rd Hand Pan Gasket with retention holes that hold bolts in place during installation Exclusive gasket material swells with first heat cycle to prevent leaks long term Kit for Jatco RE4F04A Transmissions (confirm by inputting year / make / model)