Sierra Bearing Carrier Retainer Tool 18-9809, Replaces Mercury Marine 91-17257, for Bravo Two Drives

The Sierra 18-9809 Bearing Carrier Retainer Tool is a marine specialty tool built to loosen and tighten the bearing carrier retainer on Bravo Two drives. This task requires a purpose-made tool to grip and turn the large retainer nut without damaging the carrier or the surrounding gear case components, and the 18-9809 is sized and shaped specifically for that job. It is the direct equivalent of the Mercury Marine 91-17257 tool, giving technicians and boat owners a way to service Bravo Two drives without sourcing OEM tooling.

Handling a bearing carrier retainer without the correct tool risks stripping the retainer or marring the gear case finish, so a dedicated tool like this one is standard equipment for anyone performing drive maintenance or rebuilds on applicable units. At 7.08 pounds, it has the heft expected of a solid metal service tool designed for repeated shop use.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-9809
• Tool Type: Bearing Carrier Retainer Tool
• Function: Loosens and tightens the bearing carrier retainer
• Compatible Drives: Bravo Two drives
• OEM Cross Reference: Mercury Marine 91-17257
• Weight: 7.08 pounds
• Number of Items: 1

Fitment

• Bravo Two drives

Replaces (OEM)

• Mercury Marine 91-17257

Frequently Asked Questions

What does the Sierra 18-9809 tool do? It loosens and tightens the bearing carrier retainer on Bravo Two drives, giving a secure grip on the retainer so it can be removed or reinstalled without damaging the carrier.

Which drives does the 18-9809 bearing carrier retainer tool fit? This tool is designed for use on Bravo Two drives.

Is the Sierra 18-9809 the same as the Mercury Marine 91-17257 tool? Yes, the Sierra 18-9809 replaces Mercury Marine part number 91-17257 and performs the same bearing carrier retainer function.

How much does the bearing carrier retainer tool weigh? The Sierra 18-9809 weighs 7.08 pounds.

How many pieces come with the 18-9809? The 18-9809 bearing carrier retainer tool is supplied as a single item.

Do I need a special tool to service the bearing carrier on a Bravo Two drive? Yes, a dedicated tool such as the Sierra 18-9809 is needed to properly loosen and tighten the bearing carrier retainer on Bravo Two drives without damaging the carrier or gear case.

Can this tool be used on drives other than Bravo Two? The Sierra 18-9809 is specified for use on Bravo Two drives; no other drive compatibility is listed for this part number.

Is the Sierra 18-9809 a genuine Sierra part? Yes, part number 18-9809 is a Sierra brand bearing carrier retainer tool built as an equivalent to the OEM Mercury Marine 91-17257 tool.

What is included when I order the 18-9809? Ordering the Sierra 18-9809 includes one bearing carrier retainer tool.

Why would I need to remove the bearing carrier retainer on a Bravo Two drive? Removing and reinstalling the bearing carrier retainer is a step in servicing the bearing carrier on Bravo Two drives, and the Sierra 18-9809 tool is made for loosening and tightening that retainer during the job.