91-43579 Mercury MerCruiser Insert Tool | Genuine Quicksilver OEM Part

🔧 Product Description

Genuine Quicksilver Bravo Water Hose Insert Tool - Part Number: 91-43579

Genuine Quicksilver tapered insert tool used for MerCruiser Bravo transom water hose service. This tool installs and removes the plastic insert retainers in the Bravo gimbal bell water intake hose, especially water hose 32-43437 and insert 41674T service locations.

⚙️ Key Features

• Genuine Quicksilver / Mercury service tool
• Correct Mercury tool number 91-43579
• Tapered water hose insert tool
• Used on MerCruiser Bravo transom assemblies
• Designed for plastic water hose insert 41674T
• Helps avoid damaging Bravo gimbal water intake hose during service

🚤 Compatibility

Commonly used on

• MerCruiser Bravo gimbal water intake hose service
• MerCruiser Bravo transom assemblies
• Bravo One, Bravo Two and Bravo Three water hose insert service
• Plastic insert 41674T installation and removal

Typically suits

• Drive / transom models:
• MerCruiser Bravo Drives - serial 0B664190 to 0F729999, transom water hose service
• MerCruiser Bravo Sterndrives - serial 0F730000 to 0M100000, transom water hose service
• MerCruiser Bravo - serial 0M100001 to 0W249999, water hose insert service
• MerCruiser Bravo One - serial 0W250000 and up where the gimbal water hose uses insert 41674T
• MerCruiser Bravo Two - serial 0W250000 and up where specified
• MerCruiser Bravo Three - serial 0W250000 and up where specified
• MerCruiser Bravo X / XR / XZ transom assemblies using Bravo water intake hose insert service parts
• Drive Type: MerCruiser Bravo stern drive / transom assembly
• System Type: Service tool for gimbal water intake hose insert
• Related Hose: 32-43437 Bravo gimbal bell water hose
• Related Insert: 41674T plastic hose insert

🔌 Function

The tool presses the plastic insert into the Bravo water hose correctly and can assist removal during transom water hose service. Proper insert installation helps maintain the hose shape and water flow through the gimbal housing.

⚠️ Common Signs of Failure

Common signs the tool is required

• Bravo gimbal water intake hose being replaced
• Plastic insert 41674T being installed
• Hose insert distorted, missing or incorrectly seated
• Water hose repair during bell housing service
• Transom assembly rebuild requiring water hose insert service
• Avoiding damage from screwdriver or punch-style installation

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 91-43579 current OEM tapered insert tool reference
• 43579 short-form tool reference

OEM / Related Numbers

• 91-43579
• 43579
• Bravo water hose insert tool
• Tapered insert tool
• Gimbal water hose tool
• 41674T related plastic water hose insert
• 32-43437 related Bravo gimbal water intake hose
• 32-43437T related hose reference
• 91-8M0121229 related water hose service tool family reference where applicable

Aftermarket / Verified Equivalents

• Recmar: REC91-43579
• Aftermarket Bravo water hose insert tool kits matching 91-43579 / 41674T
• Sierra-style / aftermarket 18-9844 insert tool kit references where supplied with compatible plastic water hose inserts
• Use a tapered insert tool rather than improvised tools to avoid damaging the hose bore

📦 Condition

• Genuine Quicksilver service tool
• Brand new
• Supplied in original or equivalent packaging