SKU: 27356196494

Bellows Expander Tool – Fits MerCruiser Alpha One, Alpha Gen II, Bravo 1/2/3, MC-1, R-MR & Blackhawk Drives (Replaces 91-45497A1)

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Description

Bellows Expander Tool – Fits MerCruiser Alpha One, Alpha Gen II, Bravo 1/2/3, MC-1, R-MR & Blackhawk Drives (Replaces 91-45497A1)Bellows Expander Tool Fits MerCruiser Alpha One, Alpha Gen II, Bravo 1 2 3, MC 1, R MR & Blackhawk Drives This marine exhaust bellows expander tool is designed for MerCruiser stern drives, providing a scissor style mechanism to stretch and install the exhaust bellows during replacement. It is compatible with a wide range of MerCruiser drive models, including Alpha One (Generation I & II), a range of Bravo models, Blackhawk, MC 1, and R MR. It is a

Bellows Expander Tool – Fits MerCruiser Alpha One, Alpha Gen II, Bravo 1/2/3, MC-1, R-MR & Blackhawk Drives

This marine exhaust bellows expander tool is designed for MerCruiser stern drives, providing a scissor-style mechanism to stretch and install the exhaust bellows during replacement. It is compatible with a wide range of MerCruiser drive models, including Alpha One (Generation I & II), a range of Bravo models, Blackhawk, MC-1, and R-MR.

It is a direct replacement for MerCruiser part numbers 91-45497A1 and 8M0096108, as well as several aftermarket equivalents.

  • Installation Method: Scissor-style mechanism with a screw lock to securely hold the bellows.
  • Construction: Made from durable steel with a vinyl grip handle for comfortable operation.
  • Function: Specifically used to stretch the exhaust bellows through the transom opening for proper installation.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Brand Part Number
MerCruiser 91-45497A1
MerCruiser 8M0096108
Sierra 18-9847
GLM 90360
Mallory 79811

Compatible Engine Models

Confirm your engine model/year in the table below.

Brand Model Years OEM Part No.
MerCruiser Alpha One Gen I All 91-45497A1, 8M0096108
MerCruiser Alpha One Gen II All 91-45497A1, 8M0096108
MerCruiser Bravo One All 91-45497A1, 8M0096108
MerCruiser Bravo Two All 91-45497A1, 8M0096108
MerCruiser Bravo Three All 91-45497A1, 8M0096108
MerCruiser Blackhawk All 91-45497A1, 8M0096108
MerCruiser MC-1 All 91-45497A1, 8M0096108
MerCruiser R-MR All 91-45497A1, 8M0096108

Technical Specifications

Specification Value
Product Type Bellows Expander Tool
Installation Scissor-style with screw lock
Material Steel with vinyl grip handle
Compatibility MerCruiser Alpha One, Alpha Gen II, Bravo 1/2/3, MC-1, R-MR & Blackhawk drives
Usage Used to stretch exhaust bellows through transom openings for installation
Tool Function Stretches the bellows to allow proper installation through exhaust holes
Installation Note Requires stern drive removal for use

Package Contents

This package includes the following item:

  • 1 x Bellows Expander Tool (Replaces 91-45497A1)

Installation Guide

Follow these steps to use the bellows expander tool correctly. Note: The stern drive must be removed before using this tool.

  1. Install the new exhaust bellows onto the gimbal housing.
  2. Insert the expander tool into the bellows and use the scissor-action handle to stretch it.
  3. Carefully guide the stretched bellows through the exhaust hole in the bell housing.
  4. Once the bellows is properly positioned, tighten the hose clamp to secure it in place.

Troubleshooting & FAQ

Q: How do I confirm this tool fits my MerCruiser drive?
A: This tool is designed for a broad range of MerCruiser stern drives, including Alpha One (Gen I & II), Bravo (One, Two, Three), Blackhawk, MC-1, and R-MR models. You can verify fitment by checking if your original tool's part number is 91-45497A1 or 8M0096108.

Q: Why is this tool required for the job?
A: The exhaust bellows is designed to fit snugly and must be stretched significantly to pass through the transom opening during installation. This tool provides the necessary leverage and holding power to perform this task safely and correctly, preventing damage to the new bellows.

Q: Is the stern drive really required to be removed for use?
A: Yes. Accessing the exhaust bellows connection points on the bell housing and gimbal housing is not possible with the stern drive in place. It must be removed to perform the replacement.

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.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 27356196494

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4.3 ★★★★★
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John
Lowell, US
★★★★★ 5
Great Budget Earbuds That Have Held Up Well
Style: Standard, Color: Black
I originally bought these earbuds because they were on sale and listed as an Amazon’s Choice product, and they’ve turned out to be a really good value. I’ve had them for about a year now, and they’ve held up without any issues. They connect to Bluetooth quickly and easily, the LED battery display on the front of the charging case is a nice feature, and the sound quality is surprisingly good for an inexpensive set of earbuds. Battery life has also been solid for everyday use. The microphone works fine for phone calls in quieter environments, although it doesn’t do much to block out wind noise if you’re outside. Still, for the price, these are impressive headphones and a great budget-friendly option. Overall, I’m very happy with them.
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Reviewed in the United States on May 26, 2026
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Verified Purchase
Jacinta
Pawtucket, US
★★★★★ 5
Get them!!!
Style: Standard, Color: Black
Run ...don't walk. These headphones are amazing. I was on the verge of giving up trying to find wireless headphones that could fit my small ears, be comfortable, have great sound quality, when listening to music and talking on the phone, cancel noise, that keep a decent charge, that don't fall out as I'm walking and moving my head, and are AFFORDABLE These headphones check ALL the boxes. There was a no fuss set up and pairing that took 2 min. I haven't charged them in 5 days and still have 33% charge left on them after listening to music for hours for days. They came charged as well. I've had much more expensive brands and they have failed me. These are IT and I will be purchasing them as gifts for friends and family.
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Reviewed in the United States on May 25, 2026
J
Verified Purchase
Julius Forte
Lowell, US
★★★★★ 5
Amazing buds/price/service... buy these!
Style: Standard, Color: Purple
Yes, my subject line sounds like that trash hyperbole you get on annoying pop-up ads on your Smartphone! And ironically, it usually has to do with ear buds. There are tons of them on the market, and everyone claims to be the best. Now, first off, I am just a customer… never got any gifts or money or anything from this company, nor was asked to “click on a review” for a discount or whatever. No… the reason for all this hallelujah chorus, is that I’m really totally both jazzed, and a bit in awe of these earbuds. I think the main mind-blowing thing about them is the price. I mean, I have a bit of experience and knowledge with this kind of technology, and frankly, these days, what “guts” that are needed to be used to create Bluetooth ear buds is not that complex… nor expensive. How company’s like Sony, Apple, Bose, etc. can charge upwards of $300 for these boarders on theft and fraud! I’ve tried those “Rolls Royce” buds, and I urge you to do the same, and then try these Tagry Bluetooth Wireless Earbuds that are literally 90% less expensive. Yes, they retail for about $35! They come in an excellent quality charge base, are extremely easy to put on, (and have three extra size buds to give you a custom fit), and most important, their sound quality, and I mean crisp highs, solid middles, and bone- rumbling base, are outstanding. I cannot understand what more you would want either using them for talk radio, podcasts, YouTube, streaming movies, or TV, or playing your Amazon Music or Spotify or iTunes playlists. And yes, if connected to your iPhone, you can make and receive calls, and the microphone in the buds are top quality. Their Bluetooth software is flawless, connecting to your iPhone, or other Bluetooth devices effortlessly. They come with a pleasant woman’s voice letting you know various messages, like which earbud is in what ear, if they are connected or turned off, your volume control (including excess volume warning), etc. I’ve had these for several months, and have found the charging, which has a bright LED display and shows the individual charging of each bud, along with their percentage easy to read. And a note on their service. I’ve heard horror stories of folks trying to reach the outrageously over-priced other earbud company’s for tech support, or refunds, exchanges, etc. Basically it’s nonexistent, and when you do miraculously find a phone number to call them, and get someone on the line, you have to go to the UN to find an interpreter of rare third-world languages to understand what they are saying, and they seem to be trained, not on anything to do with the product, but to make the call as useless and confusing as possible, so that you will just give up and throw their buds, and your money in the trash. Now, I did have an initial problem, after a few months, in that the base charger seemed to be slowing a bit. Tagry gives you a LIFETIME WARRANTY… yes, an actually lifetime warranty, not one of those sham “lifetime warranties”, that corrupt company’s like Hammacher Schlemmer have. I had enrolled with Tagry, on their website, to activate my warranty as soon as I received the buds. I called Tagry when I was seeing what could be a glitch in their charging base, and yes, unlike most other companies who hide their contact numbers as if they were nuclear codes, Tagry’s support phone number is plainly printed on their manual, and to my astonishment, I immediately was connected to a good ‘ol American customer service person, who actually worked for the company, spoke English, and made me feel as if I was a long-ago trusted friend. They truly cared, and said they were sorry, and that there was no need to troubleshoot the base, or return it, instead, they would process an order to send me a new one. A day later, they actually called me back to let me know that the replacement had been shipped, and that I should have it in a day or so, and if not, to please call them back right away. And yes, to apologize again for any inconvenience. The replacement arrived the very next day. And again, their warranty is indeed for a lifetime, a no questions asked replacement policy. This is how much they believe in their product, and respect their customers. So, yes. It is insane to pay more than $35 for quality Bluetooth earbuds. Last year, I sent about a dozen of these out to friends and employees, to use for personal use, and for all that Zooming going on… and they love them. And none of had any problems. I’m sure you have had a plethora of bad experiences in the past few years, what with isolation, and way too much ordering on-line, finding the products you buy to be substandard, and customer service virtually non-existent. And that is why I’ve spend all this time expounding on the greatest of my earbuds. Yes, I have a life. Really. But what a joy to be able to tell a story like this, rather than the kind of frustration most of us are experiencing every day! Yes, goodness and quality still exist. It’s rare… but it’s out there!
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Reviewed in the United States on March 24, 2023
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Verified Purchase
Patricia Wells
Cuba, US
★★★★★ 4
A big bang for your buck!
Style: Standard, Color: Pink, Style: Standard, Color: Pink
I waited a while to review. I wanted to see how they did overtime. These are amazing for the price. The sound is crisp and clear and even can go extremely loud if that's your thing. They fit comfortably in my ear and are durable (I've dropped them a few times). The case holds a charge for a long time they connect to Bluetooth with no problems. I only gave 4 stars because there is a slight delay when you tap the ear buds to change functions. It's also a small spot to touch and sometimes I find myself having to tap it a few times to find the right spot to turn on/off, turn volume up, change songs, etc. These are simple with great sound and an amazing price. If you're a sound connoisseur and want a equalizer board to work with these aren't for you. I have expensive Jabra ear buds and find I use these more. They fit better and I don't worry about losing them.
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Reviewed in the United States on April 16, 2026
M
Verified Purchase
Monroe
Boise, US
★★★★★ 5
Great quality
Style: Standard, Color: Forest Green
Very surprised at the quality of these headphones. They’re comfortable in the ear and have very clear sound quality and great volume. They’re easy to set up and the ear bud is just the right size to sit comfortably. Settings are easy to adjust and the battery life is great. I will say the color doesn’t match to the display image, they’re a lot darker green, but that’s not really an issue. I just wanted to get a colorful pair to make them distinct from others. These are a great budget ear bud!!
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Reviewed in the United States on May 6, 2026

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