Mercury Marine / Quicksilver Alignment Tool Assembly 91-805475A1
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Mercury Marine / Quicksilver Alignment Tool Assembly 91-805475A1
The Mercury Marine / Quicksilver 91-805475A1 Alignment Tool Assembly is a genuine factory OEM special service tool engineered specifically for MerCruiser sterndrive installation. This tool is used to properly align the engine to the standard Bravo transom assembly, ensuring precise fitment and correct positioning during the sterndrive installation process. It is compatible with MerCruiser Bravo drives and is not intended for use with Vazer drives.
As a genuine Mercury Marine OEM part, this alignment tool meets factory specifications and quality standards — it is not an aftermarket replacement. Proper engine-to-transom alignment is a critical step in sterndrive installation that protects the drivetrain components and ensures reliable long-term operation. Using the correct alignment tool helps prevent premature wear on the gimbal bearing, U-joints, and related components.
Key Features
- Genuine Mercury Marine / Quicksilver OEM factory tool — not aftermarket
- Used to align the engine to the standard Bravo transom assembly for sterndrive installation
- Compatible with MerCruiser Bravo drives; not for use with Vazer drives
- Shipping weight approximately 10.31 lbs; length 25.60 inches, width and height 4.50 inches each
- Equivalent to Sierra Marine 18-4442, Mallory Marine 9-79800, and GLM 90050
- Sold as a complete assembly, priced and shipped individually
- Confirm fitment using your MerCruiser engine serial number before ordering
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