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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