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Tighten the three Allen bolts evenly to the manufacturer-specified torque
taking note of the location of all parts
Ensure the pump body is securely tightened onto the gear oil bottle to create a proper seal
The stickers are intended for universal application
keeping track of their order
Driveshaft Housing Upper Unit Seal Kit – Fits Mercruiser Alpha One Gen II (Replaces Mercruiser 26-88397A1, Sierra 18-2644) 385HP Tighten the three Allen boltsProduct Details This Driveshaft Housing Upper Unit Seal Kit is engineered for Mercruiser Alpha One Generation II stern drives manufactured from 1991 to the present. It includes all the necessary seals to service the upper driveshaft housing, ensuring a reliable, leak free repair and restoration of your drive system's integrity. This kit serves as a direct interchange for Mercruiser 26 88397A1, Sierra 18 2644, GLM 87501, and JRKZRAML 88397A1, providing
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