Sierra O-Ring 18-7133-9 for Evinrude Outboard Gearcase and Drive, Pack of 5

The Sierra 18-7133-9 O-Ring is a replacement sealing ring designed for Evinrude outboard gearcase and drive applications. It is sold as a package of 5 O-rings, giving boat owners and technicians enough units on hand to complete a full gearcase service or to keep spares available for future maintenance without needing to reorder right away.

O-rings like the 18-7133-9 are used to create a tight seal at gearcase and drive component joints, helping prevent water intrusion and lubricant leaks that can lead to internal corrosion or gear damage if left unaddressed. Replacing worn or hardened O-rings during routine gearcase service is a standard maintenance step for outboard drive systems, and having a multi-pack on hand makes it easier to replace every seal in a service rather than reusing an old one that may no longer hold a proper seal.

This part is identified by Sierra part number 18-7133-9 and is categorized for Evinrude outboard gearcase and drive parts, making it a straightforward choice when servicing compatible Evinrude lower unit and drive components.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-7133-9
• Package Quantity: 5 O-rings per package
• Weight: 0.06 pounds
• Application: Evinrude Outboard Gearcase and Drive Parts
• UPC: 808282165147

Fitment

This O-ring is designated for Evinrude outboard gearcase and drive applications.

Frequently Asked Questions

What is the Sierra 18-7133-9 O-ring used for? It is a sealing O-ring used in Evinrude outboard gearcase and drive service, helping maintain a watertight and lubricant-tight seal at gearcase and drive component joints.

How many O-rings come in a package? The 18-7133-9 is sold in a package of 5 O-rings, enough for a full gearcase service or to keep spares on hand for future maintenance.

Does the Sierra 18-7133-9 fit all Evinrude outboards? This O-ring is categorized for Evinrude outboard gearcase and drive parts; specific model and gearcase compatibility should be confirmed against the gearcase or drive component being serviced.

How much does the 18-7133-9 O-ring weigh? Each package of the Sierra 18-7133-9 O-rings weighs 0.06 pounds.

Is the 18-7133-9 a genuine Sierra part? Yes, 18-7133-9 is a Sierra brand part number, sold as a replacement O-ring for Evinrude gearcase and drive applications.

Should I replace all the O-rings during a gearcase service? It is common practice to replace every O-ring during a gearcase or drive service rather than reuse old ones, which is why the Sierra 18-7133-9 is sold as a pack of 5.

Why do gearcase O-rings need to be replaced? O-rings like the 18-7133-9 can harden or wear over time, and a failed seal can allow water intrusion or lubricant leaks that damage internal gearcase components.

What is the part number for this O-ring? The part number is 18-7133-9, a Sierra brand replacement O-ring for Evinrude outboard gearcase and drive parts.

Can I buy a single 18-7133-9 O-ring instead of a pack? The 18-7133-9 is sold as a package of 5 O-rings, not as an individual unit.

What category of parts does the 18-7133-9 belong to? It falls under Evinrude Outboard Gearcase and Drive Parts, used specifically for sealing applications in that system.