44186-C Mercruiser Bell Housing | Genuine Used Part

🔧 Product Description

Genuine MerCruiser GM Flywheel Bell Housing - Casting Number: 44186-C

A genuine MerCruiser aluminium flywheel and transmission bell housing for GM-based inboard marine engines using a Borg Warner transmission arrangement.

The housing bolts to the rear of the engine block, encloses the flywheel and coupling and supports the transmission connection. Casting 44186-C cross-references with several MerCruiser flywheel-housing assemblies used across GM inline-six, V6 and V8 inboard engines.

⚙️ Key Features

• Genuine MerCruiser aluminium flywheel housing
• Casting reference 44186-C
• Used with selected Borg Warner marine transmissions
• GM engine bolt pattern
• Supports and aligns the engine-to-transmission connection

🚤 Compatibility

Commonly used on

• MerCruiser GM petrol inboard engines
• Borg Warner marine transmission installations

Typically suits

• Engine models:
• MerCruiser GM inline six-cylinder inboard engines using the corresponding housing
• MerCruiser 4.3L GM V6 inboard applications
• MerCruiser 5.0L / 305 CID GM V8 inboard applications
• MerCruiser 5.7L / 350 CID GM V8 inboard applications
• MerCruiser 7.4L / 454 CID GM V8 applications where housing 44186-C is specified
• MerCruiser MIE engines coupled to Borg Warner transmissions
• GM-based marine engines using housing references 44187A1, 86019A1 or 814309A1
• Engine Type: MerCruiser GM inline-six, V6 and V8 petrol inboard
• Transmission Type: Borg Warner marine transmission
• Year Range: Approximately 1970s - 1990s, dependent on engine and transmission configuration

🔌 Function

The bell housing encloses the flywheel and coupling and maintains alignment between the engine crankshaft and transmission input shaft.

⚠️ Common Signs of Failure

• Cracks around engine or transmission mounting points
• Corrosion around the lower housing
• Input-shaft or bearing alignment problems
• Stripped mounting threads
• Damage caused by a failed coupling or loose flywheel hardware

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 814309A1 later MerCruiser flywheel-housing assembly reference
• 44187A1 related earlier assembly reference
• 86019A1 related flywheel-housing assembly reference
• 44186-C casting reference used on the corresponding housing family

OEM / Related Numbers

• 44186-C
• 44186C
• 44187A1
• 86019A1
• 814309A1
• 814309-C
• 63828
• 77383
• 86019

Aftermarket / Verified Equivalents

• No aftermarket complete bell-housing equivalent

📦 Condition

• Genuine used part
• Removed from running engine and transmission where applicable
• In good working condition unless otherwise stated