91-43579 Aftermarket Marine Service Tool | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket MerCruiser Bravo tapered water-hose insert tool - Part Number: 91-43579

A tapered mandrel used to install and remove the plastic retaining insert in the Bravo bell-housing water-inlet hose. It supports the hose and retainer so the insert can be seated without splitting or distorting the hose.

⚙️ Key Features

• Correct taper for Bravo water-hose insert retainers

• Metal workshop tool for repeated use

• Protects the water-inlet hose during insert installation

• Works with hose 32-43437 and insert 41674T

• Cross-references to Sierra 18-9844

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 91-43579 (Mercury/MerCruiser special-tool reference)

OEM / Related Numbers:

• 91-43579

• Sierra 18-9844

• Water-inlet hose 32-43437

• Tapered insert retainer 41674T

Aftermarket / Verified Equivalents:

• Sierra: 18-9844

• Recmar: REC91-43579

🚤 Compatibility

Commonly used on:

• MerCruiser Bravo bell-housing seawater-inlet systems

Typically suits:

• Drive / engine models:

• MerCruiser Bravo One

• MerCruiser Bravo Two

• MerCruiser Bravo Three

• MerCruiser Blackhawk

• Tool Type: Tapered hose-insert mandrel

• Associated Insert: 41674T

• Associated Hose: 32-43437

🔌 Function

The mandrel expands and supports the end of the water-inlet hose while the tapered plastic insert retainer is installed or removed.

Common signs the tool or component is required:

• The specified component cannot be removed or installed without damaging the surrounding housing

• A standard puller, wrench or improvised tool cannot engage the factory service points correctly

• Accurate bearing, gear, cable or pulley positioning is required during assembly

• Corrosion, press fit or retained components require controlled service force

• The applicable workshop procedure calls for the listed OEM special-tool number

📦 Condition

• Brand new aftermarket replacement tool or service component

• New and unused

• Supplied in manufacturer or equivalent protective packaging