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Exhaust Bellows Expander Tool – Fits Mercury MerCruiser Alpha I/II, Bravo 1/2/3, and Blackhawk Stern Drives (Replaces 91-45497A1, 8M0096108)
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Exhaust Bellows Expander Tool – Fits Mercury MerCruiser Alpha I/II, Bravo 1/2/3, and Blackhawk Stern Drives (Replaces 91-45497A1, 8M0096108)
This tool is designed specifically for the installation of exhaust bellows on MerCruiser stern drive units including MC-I, R-MR, Alpha One Gen 1, Alpha One Gen 2, Bravo 1, Bravo 2, Bravo 3, and Blackhawk drives.
Direct Replacements: Mercury/MerCruiser 91-45497A1/8M0096108, Sierra 18-9847, GLM 90360, Mallory 9-79811.
- Includes 1 exhaust bellows expander tool.
- Manual operation with scissor handle design.
- Compatible with multiple MerCruiser stern drive models.
Part Number Cross-Reference
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
| Brand | Part Number |
|---|---|
| Mercury/MerCruiser | 91-45497A1 / 8M0096108 |
| Sierra | 18-9847 |
| GLM | 90360 |
| Mallory | 9-79811 |
Compatible Engine Models
Confirm your engine model/year in the table below. For Mercury owners, here9s a guide to help you identify your engine9s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.
| Brand | Model | Notes |
|---|---|---|
| Mercury | MC-1 | For exhaust bellows installation |
| Mercury | R-MR | For exhaust bellows installation |
| Mercury | Alpha One (Gen 1) | For exhaust bellows installation |
| Mercury | Alpha One Gen 2 | For exhaust bellows installation |
| Mercury | Bravo One | For exhaust bellows installation |
| Mercury | Bravo Two | For exhaust bellows installation |
| Mercury | Bravo Three | For exhaust bellows installation |
| Mercury | Blackhawk | For exhaust bellows installation |
Technical Specifications
| Specification | Value |
|---|---|
| Product Type | Exhaust Bellows Installation Tool |
| Installation | manual operation with scissor handle design |
| Housing Material | Steel |
| Handle Material | Alloy Steel with Vinyl Grip |
| Tool Color | Black |
| Weight | 0.6 kg (1.32 lbs) |
| Warranty | 180 days (HeuroFosh brand) |
| Other Technical Attributes | Opens with screw lock mechanism |
Package Contents
- 1 x Exhaust Bellows Expander Tool (91-45497A1/8M0096108)
Installation Guide
- Place clamp over bellows end.
- Place exhaust expander tool into first bellow convolution.
- Pull on tool until it touches flange on bell housing, then release tool.
- Reposition tool into third bellows convolution.
- Pull bellows onto bell housing flange, insert straight rod and 'U' pin into tool.
- Note: Sterndrive must be removed in order to use this tool.
Troubleshooting & FAQ
Q: How do I confirm this fits my engine?
A: Check the compatible engine models list and use the Mercury Serial Number Guide link provided to verify your engine model and year.
Q: How often should I replace this tool?
A: This tool is designed for repeated use; replace it if it shows signs of wear or damage affecting functionality.
Q: Can this tool be used with non-MerCruiser drives?
A: It is specifically designed for MerCruiser stern drive units listed; compatibility with other brands is not guaranteed.
Q: OEM vs. Aftermarket?
A: This listing is an aftermarket replacement 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 an aftermarket replacement 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.
We can ship to virtually any address in the world with free shipping available for most regions.
For our typical US and Canadian customers , our shipping timeframes are as follows:
- Amazon FBA: orders will be delivered within 1-5 business days after placing the order (during certain special periods such as major promotions, Christmas, etc., the delivery time of Amazon FBA may be affected).
- US warehouse shipment: orders will be delivered within 5 days after placing the order.
- China warehouse shipment: orders will be delivered about 12 days after placing the order.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
Founded in 2002, JLM Marine has established itself as a dedicated manufacturer of high-quality marine parts, based in China. Our commitment to excellence in manufacturing has earned us the trust of top marine brands globally.
As a direct supplier, we bypass intermediaries, which allows us to offer competitive prices without compromising on quality. This approach not only supports cost-efficiency but also ensures that our customers receive the best value directly from the source.
We are excited to expand our reach through retail channels, bringing our expertise and commitment to quality directly to boat owners and enthusiasts worldwide.
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