Sierra 18-8213 Transom Seal Kit for MerCruiser Alpha One Gen I

The Sierra 18-8213 Transom Seal Kit is a comprehensive bellows repair kit designed specifically for MerCruiser R, MR, and Alpha One Generation I stern drives manufactured from 1983 to 1990 with serial numbers 6225577-0D469858, as well as Alpha One SS drives (1986-1989) with serial numbers 0A545004 and up. This complete service kit provides all the essential rubber components and bearings needed for a thorough transom seal replacement.

Kit Includes:

• U-Joint drive bellows assembly
• Exhaust bellows
• Shift cable bellows
• Sealed gimbal bearing
• Water intake hoses (both 3/4" and 5/8")
• Outdrive gasket set
• Stainless steel hose clamps

This transom seal kit replaces MerCruiser OEM part number 30-803097T1 and is engineered to meet or exceed original equipment specifications. Sierra marine parts are built to withstand the harsh marine environment and provide reliable performance for demanding applications. Regular replacement of bellows and seals is critical for preventing water intrusion into the gimbal housing, which can lead to costly damage to the drive unit and engine.