Sierra 118-2644 Upper Unit Seal Kit for MerCruiser Alpha One Gen II

The Sierra 18-2644 Upper Unit Seal Kit is designed for MerCruiser Alpha One Generation II stern drives manufactured from 1991 to present (serial number 0D469859 and above). This comprehensive seal kit includes all necessary seals required to service the upper driveshaft housing, ensuring a reliable, leak-free repair and restoration of your stern drive's integrity.

Key Features:

• Direct replacement for MerCruiser OEM part number 26-88397A1
• Complete seal kit for upper driveshaft housing service
• Includes oil seals, check valve kit, seal ring gaskets, double lip seal, and multiple O-rings
• Engineered to meet or exceed original equipment specifications
• Constructed from high-quality rubber and metal components designed to withstand harsh marine environments
• Direct-fit installation for MerCruiser Alpha I Gen II drives

Kit Contains: (1) 18-2003 Oil Seal, (2) 18-2056 Oil Seals, (1) 18-2715 Check Valve Kit, (1) 18-2944 Seal Ring Gasket, (1) 18-2945 Drain Screw Gasket, (1) 18-3289 Double Lip Seal, (2) 18-7103 O-Rings, (1) 18-7117 O-Ring, (1) 18-7161 O-Ring, (1) 18-7169 O-Ring, (1) 18-7188 O-Ring, and (2) 18-7420 O-Rings.

Sierra products are engineered to meet high horsepower engine demands and are trusted by OEM engine manufacturers and boat builders worldwide. This seal kit provides a comprehensive solution for maintaining your MerCruiser stern drive system.