120650-13940 Aftermarket Yanmar BY-Series Exhaust Mixing Elbow HDI BY | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket Yanmar BY-Series Exhaust Mixing Elbow HDI BY - Part Number: 120650-13940

An AISI 316 stainless-steel exhaust mixing elbow replacing Yanmar 120650-13940 on BY-series common-rail marine diesels. It retains the original turbo flange, water-injection port and hose outlet orientation.

⚙️ Key Features

• AISI 316 stainless-steel construction

• Direct replacement for Yanmar 120650-13940

• For BY-series common-rail marine diesels

• Corrosion-resistant wet-exhaust component

• Match engine suffix and outlet orientation before installation

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• BY → Replaces Yanmar 120650-13940

OEM / Related Numbers:

• 120650-13940

• HDI BY

Aftermarket / Verified Equivalents:

• HDI Marine: BY

🚤 Compatibility

Commonly used on:

• Yanmar BY-series wet-exhaust systems

Typically suits:

• Engine models:

• Yanmar 4BY2-150

• Yanmar 4BY2-180

• Yanmar 6BY2-220

• Yanmar 6BY2-260

• Material: AISI 316 stainless steel

• Engine Family: Yanmar BY common-rail

🔌 Function

The elbow turns turbo exhaust and injects cooling water before the wet exhaust hose.

Common signs of failure:

• External corrosion, cracking or pin-hole leakage

• Internal carbon, rust or salt restriction

• Cooling water entering the manifold, turbocharger or cylinders

• Steam, reduced cooling-water discharge or an abnormally hot exhaust hose

• Loss of power caused by excessive exhaust back-pressure

📦 Condition

• Brand new aftermarket replacement part

• New and unused

• Supplied in manufacturer or equivalent protective packaging