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New Exhaust Bellows Expander Service Tool Compatible With Mercruiser Alpha One Gen Ii Bravo I Ii Iii

983-166A1
OEM PART NUMBERS:
• Mercury/Quicksilver: 91-45497A1 / 45497A1 (original OEM)
• Mercury/Quicksilver: 91-8M0096108 / 8M0096108 (current OEM supersession)
• Mercury/Quicksilver: 46-8M0096108 (alternate prefix variant)
• MPN: 983-166

SPECIFICATIONS:
• Type: Exhaust Bellows Expander Service Tool
• Function: Stretches exhaust bellows for installation
• Construction: Heavy-Duty Solid Steel
• Handle: Vinyl / PVC Non-Slip Grip
• Finish: Black Oxide (Corrosion Resistant)
• Operation: Scissor-Style with Screw Lock
• Position: External service tool (no installed position)
• Compatibility: MerCruiser Alpha/Bravo/MC-I/R-MR/Blackhawk
• Supersession: 45497A1 superseded by 8M0096108
• Tool Category: Professional Sterndrive Service Tool
• Condition: New

APPLICATIONS:
• MerCruiser MC-I (Original Sterndrive)
• MerCruiser R-MR (R and MR Series)
• MerCruiser Alpha One (Gen I Original)
• MerCruiser Alpha One Gen II (Revised)
• MerCruiser Bravo One (Bravo I)
• MerCruiser Bravo Two (Bravo II)
• MerCruiser Bravo Three (Bravo III)
• MerCruiser Blackhawk (Performance Variant)
• Used for exhaust bellows installation only
• Does NOT fit Mercury outboard motors (sterndrive-only tool)
• Does NOT fit Volvo Penta, OMC Cobra, other brands
• Does NOT fit Mariner outboard motors

PRODUCT NOTICE:
As a parts distributor we mostly sell aftermarket parts (any OEM parts would be noted as such). Aftermarket parts are not sourced from the original vehicle or equipment manufacturer, but are designed to function the same as - if not better than - the original. All parts sold are new.

WARNING - This product may expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

Was: $144.15
Sale: $82.37
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Description

MERCRUISER STERNDRIVE APPLICATIONS:

ALPHA SERIES STERNDRIVES:
• MerCruiser MC-I (Original MerCruiser Sterndrive)
• MerCruiser R-MR (R and MR Series)
• MerCruiser Alpha One (Alpha One Gen I - Original)
• MerCruiser Alpha One Gen II (Revised Alpha Platform)

BRAVO SERIES STERNDRIVES:
• MerCruiser Bravo One (Bravo I)
• MerCruiser Bravo Two (Bravo II)
• MerCruiser Bravo Three (Bravo III)

PERFORMANCE VARIANT:
• MerCruiser Blackhawk (Performance Sterndrive)

PRIMARY TOOL FUNCTION:
• Exhaust bellows expander / stretcher tool
• Stretches exhaust bellows during installation
• Enables bellows to pass through bell housing exhaust hole
• Required tool for proper bellows installation
• Prevents damage to bellows during installation
• Used after sterndrive removal (3-step procedure)

TOOL CONSTRUCTION:
• Material: Heavy-Duty Solid Steel
• Handle: Vinyl / PVC Non-Slip Grip
• Finish: Black Oxide (Corrosion Resistant)
• Operation: Scissor-Style with Screw Lock
• Professional Grade MerCruiser Service Tool

INSTALLATION PROCEDURE:
• Step 1: Install exhaust bellows on gimbal housing
• Step 2: Stretch bellows through exhaust hole in bell housing
• Step 3: Tighten hose clamp to secure
• IMPORTANT: Sterndrive must be REMOVED before tool use
• Completes bellows installation in minutes

WHY PROPER TOOL IS ESSENTIAL:
• Exhaust bellows are stiff rubber components
• Cannot be installed by hand without stretching
• Improper installation can tear or misalign bellows
• Damaged bellows lead to water intrusion in bilge
• Water intrusion damages gimbal bearing and drives
• Proper tool ensures professional-grade installation

USE CASE SCENARIOS:
• Annual MerCruiser transom seal service
• Exhaust bellows replacement (routine maintenance)
• Post-collision sterndrive rebuild
• Complete transom assembly service
• U-joint and gimbal bearing service

OEM SUPERSESSION CHAIN:
• Original OEM: 91-45497A1 / 45497A1
• Current OEM: 91-8M0096108 / 8M0096108
• Alternate Prefix: 46-8M0096108
• All numbers reference same exhaust bellows expander tool

OEM PART NUMBERS:
• Mercury/Quicksilver: 91-45497A1 / 45497A1 (original)
• Mercury/Quicksilver: 91-8M0096108 / 8M0096108 (current)
• Mercury/Quicksilver: 46-8M0096108 (alternate prefix)
• MPN: 983-166

COMPANION TOOLS (not included):
• Bellow Retainer Ring Installer (OEM 91-818162)
• Bellows Adhesive (OEM 86166Q1)
• Hinge Pin Tool (OEM 91-78310)
• Transom Seal Repair Kit (OEM 803099T1)

CRITICAL FITMENT WARNINGS:
• MerCruiser Alpha/Bravo/MC-I/R-MR/Blackhawk sterndrives only
• Professional service tool — knowledge of MerCruiser service recommended
• Does NOT fit Mercury outboard motors (sterndrive-only tool)
• Does NOT fit Volvo Penta, OMC Cobra, or other brands
• Sterndrive must be REMOVED before tool use
• Not a replacement part — this is an installation service tool

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  • Item Requires Shipping
  • 7.0 lbs.
  • W8.0000” x H5.0000” x L15.0000”
  • Free Shipping!

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