124070-13520 Aftermarket Yanmar GM Cast 316 Stainless Steel Exhaust Mixing Elbow 128370-13600 HDI GM | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket Yanmar GM Cast 316 Stainless Steel Exhaust Mixing Elbow 128370-13600 HDI GM - Part Number: 124070-13520

A cast AISI 316 stainless-steel upper mixing elbow replacing Yanmar 124070-13520, 128370-13600 and related GM/HM/YM elbow numbers. It threads onto the GML lower bend and uses water fitting 124070-13300.

⚙️ Key Features

• Cast AISI 316 stainless-steel construction

• Replaces multiple Yanmar GM/HM/YM mixer numbers

• Threaded removable upper mixer

• Uses bronze water fitting 124070-13300

• 2-inch wet-exhaust outlet

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• GM → Replaces 128370-13600, 128270-13600, 124070-13520, 128370-13610, 104214-13531 and 128990-13520

OEM / Related Numbers:

• 124070-13520

• 128370-13600

• 128270-13600

• 128370-13610

• 104214-13531

• 128990-13520

• 124070-13300

• HDI GM

Aftermarket / Verified Equivalents:

• HDI Marine: GM

• Recmar: MAR3520

🚤 Compatibility

Commonly used on:

• Yanmar GM/HM/YM threaded wet-exhaust systems

Typically suits:

• Engine models:

• Yanmar 1GM

• Yanmar 1GM10

• Yanmar 2GM

• Yanmar 2GM20

• Yanmar 2GM20F

• Yanmar 2GM30

• Yanmar 2GM30F

• Yanmar 3GM

• Yanmar 3GMD

• Yanmar 3GM30

• Yanmar 3GM30F

• Yanmar 3HM

• Yanmar 3HM35

• Yanmar 3HM35F

• Yanmar 2YM15

• Yanmar 3YM20

• Yanmar 3YM30

• Yanmar YSM12

• Material: cast AISI 316 stainless steel

• Water Inlet Thread: 3/8 in pipe thread

• Exhaust Outlet: 2 in OD

• Internal Thread: 1-1/4 BSPT

🔌 Function

The mixing elbow injects raw water into the exhaust gas before discharge into the wet 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