Sierra 18-8212-1 Transom Seal Kit - Replaces 30-803100T1, 8M0095485 - Fits All Bravo Sterndrives 1982 & Up

The Sierra 18-8212-1 Transom Seal Kit is a complete bellows and seal replacement kit for the transom assembly on Mercruiser Bravo sterndrives, covering all Bravo units from 1982 and up. When the original bellows, hoses, and gaskets on a sterndrive age out, they are the most common source of water intrusion into the boat and gear housing, so this kit bundles the full set of wear parts needed to reseal the transom area in one job rather than sourcing each piece individually.

The kit includes the 18-2753-1 Shift Cable Bellows (O.E. 74639), the 18-2100 Gimbal Bearing (O.E. 30-862540A3), the 18-2756 U-Joint Bellows, the 18-2750 Exhaust Bellows, the 18-2760 Exhaust Tube, the 18-3603 Water Intake Hose, the 18-2615 Outdrive Gasket Set, and the 18-21005 component, giving an installer every rubber and gasket part typically replaced during a transom reseal in a single kit.

Sierra manufactures this kit to meet or exceed the specification of the original equipment parts it replaces, and it is built as a direct fit for Mercruiser Bravo applications, including Blackhawk drives. Ordering the full kit at once ensures the shift bellows, exhaust bellows, water intake hose, gimbal bearing, and outdrive gasket set are all replaced together, avoiding a return trip to the boat for a part that was left out.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-8212-1
• Product Type: Transom Seal Kit
• Weight: 4.88 pounds
• Kit Contents: 18-2753-1 Shift Cable Bellows, 18-2100 Gimbal Bearing, 18-2756 U-Joint Bellows, 18-2750 Exhaust Bellows, 18-2760 Exhaust Tube, 18-3603 Water Intake Hose, 18-2615 Outdrive Gasket Set, 18-21005
• Application: All Bravos 1982 and up

Fitment

• All Bravo sterndrives, 1982 and up

Replaces (OEM)

• 30-803100T1
• 8M0095485

Frequently Asked Questions

What does the Sierra 18-8212-1 Transom Seal Kit fit? The 18-8212-1 kit is built for all Bravo sterndrives, 1982 and up.

What parts are included in the 18-8212-1 kit? The kit contains the 18-2753-1 Shift Cable Bellows, 18-2100 Gimbal Bearing, 18-2756 U-Joint Bellows, 18-2750 Exhaust Bellows, 18-2760 Exhaust Tube, 18-3603 Water Intake Hose, 18-2615 Outdrive Gasket Set, and 18-21005.

Which OEM part numbers does the 18-8212-1 kit replace? It replaces Mercruiser OEM numbers 30-803100T1 and 8M0095485.

Is the gimbal bearing in this kit the same as the original Mercruiser bearing? Yes, the 18-2100 Gimbal Bearing included in the Sierra 18-8212-1 kit corresponds to OEM number 30-862540A3.

Does this kit include the shift cable bellows? Yes, the 18-2753-1 Shift Cable Bellows, which corresponds to OEM number 74639, is included in the 18-8212-1 kit.

How much does the 18-8212-1 Transom Seal Kit weigh? The kit weighs 4.88 pounds.

Will this kit work on a Blackhawk drive? Yes, the Sierra 18-8212-1 Transom Seal Kit is designed for use in Bravo and Blackhawk applications.

Does the kit include the exhaust bellows and exhaust tube? Yes, the 18-2750 Exhaust Bellows and 18-2760 Exhaust Tube are both included in the 18-8212-1 kit.

Is a water intake hose included with the 18-8212-1 kit? Yes, the kit includes the 18-3603 Water Intake Hose along with the other bellows and gaskets.

Does this kit include the outdrive gasket set? Yes, the 18-2615 Outdrive Gasket Set is part of the 18-8212-1 Transom Seal Kit contents.

Is Sierra 18-8212-1 an aftermarket or OEM part? It is a Sierra aftermarket kit manufactured to meet or exceed the original equipment parts it replaces, including Mercruiser 30-803100T1 and 8M0095485.

Why replace all the transom bellows and seals at once instead of individually? The 18-8212-1 kit bundles the shift bellows, U-joint bellows, exhaust bellows, exhaust tube, water intake hose, gimbal bearing, and outdrive gasket set together so every wear part in the transom area is replaced in the same job, since these components typically age out together on Bravo drives from 1982 and up.