Sierra 18-1710 Bellow Flange Ring, Replaces 862209 86814, Fits All Bravo Drives

The Sierra 18-1710 Bellow Flange Ring is a machined flange ring designed for the exhaust bellows on all Bravo sterndrive units. It seats and secures the bellows against the drive housing, maintaining a proper seal at the connection point between the bellows and the drive. As a direct replacement part, it is built to meet or exceed the specifications of the original equipment it replaces, making it a reliable choice when servicing or rebuilding the bellows assembly on a Bravo drive.

This flange ring is a small but essential component in the bellows system, and using the correct ring helps ensure the bellows seats correctly and holds its seal, which is critical for keeping water out of the boat and exhaust gases properly routed. It is sold as an individual replacement ring for technicians and boat owners performing bellows maintenance or full bellows replacement on Bravo-equipped MerCruiser drives.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-1710
• Product Name: Bellow Flange Ring
• Weight: 0.05 pounds
• Product Dimensions: 0.39 x 0.39 x 0.39 inches
• Exterior Finish: Machined
• UPC: 808282295097
• OEM Cross-Reference: 862209, 86814

Fitment

• All Bravo sterndrive models

Replaces (OEM)

• 862209
• 86814

Frequently Asked Questions

What does the Sierra 18-1710 Bellow Flange Ring fit? The 18-1710 flange ring fits all Bravo sterndrive models.

What OEM part numbers does the 18-1710 replace? This flange ring replaces OEM part numbers 862209 and 86814.

Is the 18-1710 a genuine Sierra part or an aftermarket copy? It is a genuine Sierra part, manufactured to meet or exceed the specifications of the original equipment part it replaces.

What is the weight of the 18-1710 Bellow Flange Ring? The Sierra 18-1710 Bellow Flange Ring weighs 0.05 pounds.

What are the dimensions of the Bellow Flange Ring? The 18-1710 measures 0.39 x 0.39 x 0.39 inches.

What is the finish on the 18-1710 flange ring? The flange ring has a machined exterior finish.

Do I need to replace the flange ring when replacing the bellows on a Bravo drive? Yes, the 18-1710 flange ring seats and seals the bellows against the drive housing, so it should be inspected and replaced along with the bellows to maintain a proper seal on Bravo units.

Will the 18-1710 fit an Alpha One drive? No, the 18-1710 is designated for all Bravo models; a separate flange ring, part number 18-1728, is used for Alpha One (GenII) applications.

What is included when I order the 18-1710? The order includes one Sierra 18-1710 Bellow Flange Ring.

Does the 18-1710 come in a display package? The 18-1710 is the standard non-display packaged number; a corresponding display-packaged version exists as a separate item.

What is the UPC for the Sierra 18-1710 Bellow Flange Ring? The UPC for the Sierra 18-1710 Bellow Flange Ring is 808282295097.