Sierra 18-8218 MerCruiser Alpha One Gen II 1991 & Up Bellows Seal Kit

Sierra 18-8218 MerCruiser Alpha One Gen II 1991 & Up Bellows Seal Kit Replaces 30-803099T1

This Sierra bellows seal kit for use with MerCruiser Alpha One Gen II Stern Drives. All Sierra aftermarket engine parts are manufactured to meet or exceed OEM requirements.

Features:

• Fits MerCruiser Alpha I Gen II 1991 & up with serial numbers 0D469859 & up
• Includes a sealed gimbal bearing

Interchangeable with:

• Mallory
• 9-72900
• 9-72906
• MerCruiser Stern Drive
• 30-803099T1

Kit Includes:

• (1) 18-2753-2 Shift Cable Bellows
• (1) 18-2750 Exhaust Bellows
• (1) 18-2747 Drive Bellows
• (1) 18-21006 Gimbal Bearing
• (1) 18-2840 Bell Housing Gasket
• (2) 18-7153 O-Ring
• (1) 18-7170 O-Ring
• (1) 18-7117 O-Ring
• (1) 18-2743 Outdrive Mounting Gasket
• (1) 18-710-24-2 Hose Clamp 1-1/16 - 2
• (2) 18-710-16-2 Hose Clamp 11/16 - 1-1/2
• (1) 18-3602 Water Intake Hose

Frequently Asked Questions

What is the Sierra 18-8218 MerCruiser Alpha One Gen II Bellows Seal Kit used for?

The Sierra 18-8218 Bellows Seal Kit is designed for MerCruiser Alpha One Gen II Stern Drives from 1991 and newer with serial numbers 0D469859 and up. The kit provides bellows, a sealed gimbal bearing, gaskets, O-rings, hose clamps, and a water intake hose for the specified application.

What MerCruiser models is the Sierra 18-8218 Bellows Seal Kit compatible with?

This kit is specified for MerCruiser Alpha I Gen II Stern Drives from 1991 and newer with serial numbers 0D469859 and up. Verify the drive year and serial number before purchasing to confirm that this kit matches your application.

What is included in the Sierra 18-8218 Bellows Seal Kit?

The kit includes shift cable, exhaust, and drive bellows; a gimbal bearing; bell housing and outdrive mounting gaskets; O-rings; hose clamps; and a water intake hose. It includes one sealed gimbal bearing along with the other listed components for the specified Alpha One Gen II application.

Does the Sierra 18-8218 kit include a gimbal bearing?

Yes. The Sierra 18-8218 Bellows Seal Kit includes one 18-21006 gimbal bearing. The product description identifies the included gimbal bearing as sealed.

What parts does the Sierra 18-8218 replace or interchange with?

The Sierra 18-8218 is listed as interchangeable with Mallory 9-72900 and 9-72906, as well as MerCruiser Stern Drive part 30-803099T1. Always verify the applicable drive year and serial number before selecting the replacement kit.

What should I verify before using the Sierra 18-8218 Bellows Seal Kit?

Confirm that your MerCruiser Alpha I Gen II Stern Drive is from 1991 or newer and has serial number 0D469859 or higher. The product description specifically limits the stated fitment to this application, so the drive's year and serial number should be checked before purchase or installation.

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