Driveshaft Housing Upper Unit Seal 26-88397A1 88397A1 Sierra 18-2644 with Stern Drive Alpha One II

26-88397A1 Driveshaft Housing Upper Unit Seal 88397A1 For Stern Drive Alpha One II 26-88397A1 Sierra 18-2644The 26-88397A1 Driveshaft Housing Upper Unit Seal is designed for use with the upper unit of Stern Drive systems.This seal replaces factory-installed seals that degrade over time due to exposure to water, salt, and mechanical wear.It includes all necessary components for a complete , such as the main seal, O-rings, and related parts, a watertight and oil-tight seal.This is compatible with Alpha One II and Sierra 18-2644 models, providing a direct fit for these applications.The 88397A1 is equivalent to 26-88397A1 and refers to the same seal configuration.The upper unit in a stern drive system transfers power from the engine to the and contains the driveshaft.Over time, worn seals can allow water ingress, leading to internal , loss, and potential bearing or gear damage.Replacing the seals helps maintain the integrity of the unit and supports.Constructed from marine-grade materials, the resists and performs consistently under varying temperature and environmental conditions.The included components are engineered to match the specifications of the , supporting proper function upon installation.Installation is designed to align with standard procedures for the specified models.The provides a complete set of seals to avoid sourcing individual parts separately.After installation, checking for leaks before returning the boat to the water is recommended to verify seal integrity.Important: This is an independent aftermarket part.Brand/model references serve only to show compatibility.

• for model 26-88397A1 and compatible with Sierra 18-2644 for integration
• Designed specifically for Stern Drive Alpha One II applications
• Includes all necessary components for a complete upper unit seal installation
• Ensures water intrusion and leakage
• Engineered to meet OEM specifications for and proper fit