Sierra 18-2615 Outdrive Gasket Set, Replaces Mercury Marine 16755A1, Fits All Bravo

The Sierra 18-2615 Outdrive Gasket Set is a complete seal and O-ring kit for Bravo unit outdrives, giving you every soft part needed to reseal the drive during a rebuild or service in one purchase instead of sourcing each piece separately. The kit is built to the OEM specification and directly replaces Mercury Marine 16755, 16755A1, 16755Q1, and 16755T1, so it drops into the same application without modification.

Inside the set you get the components needed for the outdrive gasket job: a seal (Sierra 18-2516, O.E. 16755), an O-ring (Sierra 18-7198, O.E. 25-45710), and an O-ring (Sierra 18-7153, O.E. 25-33504). Using a matched kit like this helps ensure the seals and O-rings you install are sized and rated correctly for the outdrive housing, reducing the risk of leaks from mismatched aftermarket substitutes. This set is designed for All Bravo outdrives, making it a straightforward choice when servicing this drive family.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-2615
• Product Type: Outdrive Gasket Set
• Fits: All Bravo
• Kit Contents: Seal (18-2516, O.E. 16755); O-Ring (18-7198, O.E. 25-45710); O-Ring (18-7153, O.E. 25-33504)
• Item Thickness: 0.25 inches
• Weight: 0.02 pounds
• UPC: 030999237231
• OEM Cross Reference: 16755, 16755A1, 16755Q1, 16755T1

Fitment

• All Bravo outdrives

Replaces (OEM)

• 16755
• 16755A1
• 16755Q1
• 16755T1

Frequently Asked Questions

What does the Sierra 18-2615 Outdrive Gasket Set include? The kit includes a seal (Sierra 18-2516, O.E. 16755), an O-ring (Sierra 18-7198, O.E. 25-45710), and an O-ring (Sierra 18-7153, O.E. 25-33504), giving you every soft part needed for one outdrive reseal job.

Does this gasket set fit a Bravo outdrive? Yes, the Sierra 18-2615 Outdrive Gasket Set is designed for All Bravo outdrives.

Is the Sierra 18-2615 the same as Mercury Marine 16755A1? It is a direct replacement for Mercury Marine 16755, 16755A1, 16755Q1, and 16755T1, so it can be used in place of any of those OEM numbers.

How thick is the O-ring in the 18-2615 kit? The item thickness listed for the Sierra 18-2615 Outdrive Gasket Set is 0.25 inches.

How much does the 18-2615 Outdrive Gasket Set weigh? This Sierra gasket set weighs 0.02 pounds.

Can I order the individual seal or O-ring instead of the full kit? The full Sierra 18-2615 Outdrive Gasket Set bundles the seal (18-2516) and both O-rings (18-7198 and 18-7153) together as one kit for a complete reseal.

What is the UPC for the Sierra 18-2615 Outdrive Gasket Set? The UPC is 030999237231.

When would I need this outdrive gasket set? This set is used when resealing or rebuilding a Bravo outdrive, replacing the seal and O-rings that commonly need renewal during service.

Is the Sierra 18-2615 an OEM-quality replacement? Sierra manufactures the 18-2615 set to the OEM specification of Mercury Marine 16755, 16755A1, 16755Q1, and 16755T1, making it a direct equivalent rather than a generic substitute.

Will this kit work on any Bravo model, or just specific ones? The Sierra 18-2615 Outdrive Gasket Set is listed for All Bravo outdrives, without limitation to a specific Bravo model.