Bellow Retainer Ring Install Driver Tool 91-818162 for Mercruiser Alpha Bravo
Bellow Retainer Ring Install Driver Tool 91-818162 for Mercruiser Alpha Bravo
Product Overview
Bellow retainer ring install driver, a marine installation tool and part for Mercruiser Alpha One Gen II, Bravo and Blackhawk drives, supplied as 1 steel driver, 211 g packed in a 16 x 10 x 6 cm box. The same driver is called for on Mercury drives that list the number below. It replaces 91-818162, 43577, Sierra 18-9870 and Mallory 9-79821. The tool seats the aluminium retainer ring that holds the U-joint bellows onto the gimbal housing. Without a driver the ring goes in crooked, the bellows lip pinches and the boat takes water through the transom on the next launch. Use it with the drive removed, after the bellows is on the housing and the ring is started by hand.
Specifications & Attributes
| Specification | Detail |
|---|---|
| Condition | New / New with tags |
| Type | Bellow Retainer Ring Install Tool |
| Drive | Alpha One Gen II, Bravo, Blackhawk |
| Function | Seats the U-joint bellows retainer ring |
| Material | Steel driver |
| Quantity | 1 tool |
| Shipping Weight | 211 g |
| Packaging Size | 16 x 10 x 6 cm (6.3 x 3.9 x 2.4 in) |
OEM Cross Reference
| Brand | OEM Part Numbers |
|---|---|
| Mercury / Mercruiser | 91-818162, 43577 |
| Sierra | 18-9870 |
| Mallory | 9-79821 |
Compatible Engines
| Drive | Application |
|---|---|
| Mercruiser Alpha One Gen II | U-joint bellows retainer ring |
| Mercruiser Bravo | U-joint bellows retainer ring |
| Mercruiser Blackhawk | U-joint bellows retainer ring |
| Mercury / Mercruiser drives | Where 91-818162 is called for |
What's Included
| Component | Qty |
|---|---|
| Bellow Retainer Ring Install Tool | 1 |
Condition & Warranty
| Item | Detail |
|---|---|
| Condition | New / New with tags |
| Warranty | Standard |
| Packaging | Sealed retail packaging |
Before You Buy
- The drive must be off, this is not a tool you can use in place
- Start the retainer ring by hand and check it is square before driving it
- Renew the bellows and the gimbal bearing seal at the same time
- No installation instructions are included, a workshop manual is worth having
- 30-Day Easy Returns
- Free Worldwide Shipping
Verfügbarkeit für Abholungen konnte nicht geladen werden

Boat Owners' Review
Before You Buy
Frequently Asked Questions
What is your refund policy?
We offer a 14-day hassle-free return on all products. Items must be unused and in original packaging. Every XRmarine part is also covered by our 1-year warranty against manufacturing defects. If something is not right, email us at info@xrmarineparts.com — replacement or full refund, your choice.
See our full Refund Policy for complete details.
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