I have a new chrome HD master cylinder kit 46418-05A for a '05 to '07 with dual disc using DOT 4 fluid. My bike is a '04 ElectraGlide with dual disc's using DOT 5 fluid - it calls for kit 45281-99D. According to the service parts lists for both, the only difference's are the brake line sealing washers and the internal repair kit is the same part number but has a different letter on the end - the '05 is #45072-96B (DOT 4) and the '04 is #45072-96C (DOT 5). I know the fluid types are not interchangable, but are the seals the same and will they work with the DOT 5 since they are new and have not had any fluid in the cylinder yet?? Or will I have to replace the internal seals with the ones for the DOT 5?? Thanks in advance for your responses!