74639A2 Shift Bellow For Mercruiser Bravo 1 2 3 Alpha 1 Gen 2 74639Q02 31659 74639B 74639B1 Sierra 18-2753-2 Engine Position: Outboard Type: Stern Drive Shift Bellows Manufacturer Part Numbers: 74639A2, 74639Q02, 31659, 74639B, 74639B1 Mallory P/N: 9-72705 Sierra P/N: 18-2753-2 GLM P/N: 89080 Engine Type: Mercruiser Stern Drive Engines Compatibility: Fits Mercruiser Bravo 1, 2, 3, Alpha 1 Gen 2, and other compatible models Material: Rubber and stainless steel Design: Constructed for durability and flexibility Performance: Capable of withstanding temperatures up to 105℃ Installation: Includes all necessary components for straightforward installation The 74639A2 shift bellow is a replacement component designed for Mercruiser stern drive engines.Made from rubber and stainless steel, it is built to endure marine operating conditions.The material composition supports performance under extreme temperatures, contributing to function in demanding environments.Its flexible design aids in smooth shifting action, helping reduce stress on engine parts during. This shift bellow is compatible with multiple Mercruiser models, including Bravo 1, 2, 3, and Alpha 1 Gen 2.It serves as a direct fit for OEM part numbers 74639A2, 74639Q02, 31659, 74639B, and 74639B1.Installation includes a stainless steel clamp and required hardware, allowing for secure attachment without the need for additional components.The unit supports efficient of the shift mechanism and contributes to the overall of the stern drive system. Disclaimer: This replacement is not affiliated with any manufacturer.Model references indicate fitment only.