Suzuki - Gear Case Seal Kit - DT40c / DF40A / DF50A / DF60A - 25700-88L03. Replace or repair your Suzuki outboard seals, O-rings, and gaskets with this certified Suzuki gear case seal kit. This gear case seal kit applies to the following Suzuki outboard models: DT 40c All Model Years DF 40 All Model Years DF 40A All Model Years DF 50 All Model Years DF 50A All Model Years DF 60A All Model Years