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Bellow Retainer Ring Sleeve Installation Tool – Fits Mercury MerCruiser Alpha One Gen II, Bravo, Blackhawk (Replaces 91-818162)
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Bellow Retainer Ring Sleeve Installation Tool – Fits Mercury MerCruiser Alpha One Gen II, Bravo, Blackhawk (Replaces 91-818162)
This is a specialized installation tool for seating the aluminum retainer ring inside the U-joint bellows on various Mercury MerCruiser sterndrives. Made from high-grade steel, this tool is designed for press-fitting the ring to ensure a proper seal and secure fitment, preventing leaks and damage to the universal joint.
It is compatible with MerCruiser Alpha One Generation II, Bravo One, Bravo Two, Bravo Three, and Blackhawk drives. This component is a direct replacement for Mercury Marine part number 91-818162, Sierra 18-9870, and Mallory 9-79821.
- Function: Specialized tool for installing the aluminum retainer ring into the U-joint drive shaft bellows.
- Construction: Built from high-grade steel for durability and precise fitment.
- Installation Method: Requires a compatible driver rod and installer tool for correct use.
Part Number Cross-Reference
Use this table to confirm equivalent part numbers across OEM andbrands.
| Brand | Part Number |
|---|---|
| Mercury Marine | 91-818162 |
| Mercury Marine | 43577 |
| Sierra | 18-9870 |
| Mallory | 9-79821 |
| SEI Marine | 89-101-36 |
Compatible Engine Models
Confirm your engine model/year in the table below. For Mercury owners, here’s a guide to help you identify your engine’s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Mercury | Alpha One Gen II | 120–300 | 4-Stroke | 1992–Present | 91-818162 | Primary application |
| Mercury | Bravo One | 250–500+ | 4-Stroke | 1988–Present | 91-818162 | High-performance drives |
| Mercury | Bravo Two | 300–500+ | 4-Stroke | 1989–Present | 91-818162 | Heavy-duty applications |
| Mercury | Bravo Three | 250–500+ | 4-Stroke | 1988–Present | 91-818162 | Dual-prop configuration |
| Mercury | Blackhawk | 300–500+ | 4-Stroke | 1994–1998 | 91-818162 | Surface drive system |
| Mercury | Vazer Drive | 200–350 | 4-Stroke | 1990–2000 | 91-818162 | Limited production model |
| Sierra | 18-9870 | All Compatible | 4-Stroke | 1988–Present | 18-9870 | Direct OEM replacement |
| Mallory | 9-79821 | All Compatible | 4-Stroke | 1988–Present | 9-79821 | OEM equivalent quality |
| SEI Marine | 89-101-36 | All Compatible | 4-Stroke | 1988–Present | 89-101-36 | ISO9002 certified |
Technical Specifications
| Specification | Value |
|---|---|
| Product Type | Drive Shaft Bellow Sleeve Installation Tool |
| Installation | Specialized tool for installing aluminum retainer ring into U-joint bellows |
| Housing Material | High-grade steel construction |
| Dimensions | Approximately 89mm diameter x 25mm height (3.5" x 1") |
| Product Weight | 150g |
| Package Dimensions | 15cm x 10cm x 3cm |
| Package Weight | Approximately 0.45kg (1 lb) |
| Fitting Type | Precision-machined installation sleeve |
| Operating Temperature | Standard ambient conditions (-10°C to 50°C / 14°F to 122°F) |
| Other Technical Attributes | Requires driver rod and installer tool for optimal performance; ISO9002 certified manufacturing forversions |
Package Contents
1 x Bellow Retainer Ring Sleeve Installation Tool (Replaces 91-818162)
Installation Guide
- Ensure the sterndrive unit is safely tilted up and accessible.
- Place the new U-joint bellows onto the gimbal housing.
- Insert the aluminum retainer ring into the designated groove on the new bellows.
- Position this sleeve installation tool evenly over the retainer ring.
- Using a compatible driver rod, carefully apply pressure to drive the tool, seating the ring securely into the bellow's groove.
- Once fully seated, visually inspect the ring to confirm it is flush and evenly installed.
- Carefully remove the installation tool. The bellows is now secured.
Troubleshooting & FAQ
Q: How do I properly use this installation tool?
A: This tool is a sleeve designed to press-fit the aluminum retainer ring into the U-joint bellows. It must be used with a compatible driver rod. Place the sleeve over the ring and use the driver to apply even force, seating the ring correctly without damaging the bellows.
Q: Will this tool work on a sterndrive that is not a MerCruiser?
A: No, this installation tool is specifically designed for the MerCruiser models listed, including Alpha One Gen II, Bravo I, II, III, and Blackhawk drives. It is not intended for use with other brands like Volvo Penta or OMC.
Q: What other tools are required for a U-joint bellows replacement?
A: In addition to this sleeve, you will need a compatible driver rod, a bellows expander tool, adhesive/sealant, and standard mechanical tools for disassembling and reassembling the sterndrive components.
Q: OEM vs. Aftermarket?
A: This listing is anreplacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.
Q: How fast do you ship and how much does it cost?
A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.
Q: What is your warranty and return policy?
A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.
Important Notes
- Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
- This product is anreplacement part and is not an OEM component.
- Professional installation is recommended to ensure safety and optimal performance.
Why Choose JLM MARINE?
- Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
- Fast Global Shipping: Free delivery worldwide in 5–15 days.
- Direct from Manufacturer: Competitive pricing without compromising quality.
Мы осуществляем доставку практически по любому адресу в мире, при этом для большинства регионов доступна бесплатная доставка.
Для наших типичных клиентов из США и Канады сроки доставки следующие:
- Amazon FBA : заказы будут доставлены в течение 1–5 рабочих дней после размещения заказа (в определенные особые периоды, такие как крупные акции, Рождество и т. д., время доставки Amazon FBA может быть изменено).
- Доставка со склада в США : заказы будут доставлены в течение 7 дней после размещения заказа.
- Доставка со склада в Китае : заказы будут доставлены примерно через 12 дней после размещения заказа.
Когда вы размещаете заказ, мы оценим даты отправки и доставки для вас на основе доступности ваших товаров и выбранных вами вариантов доставки. В зависимости от выбранного вами поставщика услуг доставки, предполагаемые даты доставки могут отображаться на странице расценок на доставку.
Также обратите внимание, что стоимость доставки многих товаров, которые мы продаем, основана на весе. Вес любого такого товара можно найти на странице с его подробностями. Чтобы отразить политику транспортных компаний, с которыми мы работаем, все веса будут округлены до следующего целого фунта.
Основанная в 2002 году, компания JLM Marine зарекомендовала себя как специализированный производитель высококачественных морских деталей, базирующийся в Китае. Наша приверженность совершенству в производстве заслужила нам доверие ведущих мировых морских брендов.
Как прямой поставщик, мы обходим посредников, что позволяет нам предлагать конкурентоспособные цены без ущерба качеству. Такой подход не только поддерживает экономическую эффективность, но и гарантирует, что наши клиенты получают наилучшую ценность напрямую от источника.
Мы рады расширить свое присутствие через розничные каналы, предлагая наш опыт и приверженность качеству непосредственно владельцам и любителям лодок по всему миру.
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