72082-2 72082A2 Mercruiser Exhaust Elbow | Genuine Used Part

🔧 Product Description

Genuine MerCruiser 470 Exhaust Elbow Tube - Part Number: 72082A2

A genuine MerCruiser one-piece exhaust elbow tube, also identified by casting number 72082-2, for early MerCruiser 470 3.7L inline four-cylinder installations.

The formed elbow connects the engine exhaust outlet to the transom exhaust system and bellows. It is associated with early 1976-1982 MerCruiser 470 installations before the later two-piece exhaust-pipe arrangement was introduced.

⚙️ Key Features

• Genuine MerCruiser OEM exhaust elbow tube
• Mercury service number 72082A2
• Casting number 72082-2
• One-piece J-tube exhaust connection
• Used on early MerCruiser 470 3.7L pre-Alpha installations

🚤 Compatibility

Commonly used on

• MerCruiser 470 pre-Alpha transom exhaust systems
• Early one-piece exhaust elbow and J-tube installations

Typically suits

• Engine models:
• MerCruiser 470 MCM 224 CID inline four-cylinder - 1976-1979
• MerCruiser 470 MCM 224 CID inline four-cylinder - 1980-1982
• MerCruiser 470 2BBL - serial 4208730 to 5520114
• MerCruiser 470 2BBL - serial 5520115 to 6218036
• Early MerCruiser 485 installations converted or configured with the compatible one-piece 470 exhaust outlet
• HP Range: MerCruiser 470-series output ratings
• Engine Type: MerCruiser 3.7L / 224 CID inline four-cylinder petrol engine
• Year Range: Approximately 1976-1982

🔌 Function

The elbow transfers wet exhaust gases and cooling water from the engine outlet to the transom exhaust passage. Its shape maintains the correct connection between the engine, exhaust shutter and stern-drive bellows.

⚠️ Common Signs of Failure

• External rust, cracking or perforation
• Exhaust fumes or soot inside the engine compartment
• Cooling water leaking from the elbow
• Internal corrosion restricting exhaust flow
• Water entering the exhaust through a damaged or perforated elbow

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 72082A2 final OEM exhaust elbow assembly reference
• 72082-2 original casting identifier
• 72082 original base reference

OEM / Related Numbers

• 72082A2
• 72082-2
• 72082
• 70981A3 related exhaust bellows
• 45586 related exhaust shutter
• 27-72083 related exhaust joint gasket reference

Aftermarket / Verified Equivalents

• No aftermarket equivalent

📦 Condition

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