129198-13500 Aftermarket Yanmar Exhaust Mixing Elbow HDI GM2+JHB | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket Yanmar Exhaust Mixing Elbow HDI GM2+JHB - Part Number: 129198-13500

A cast AISI 316 stainless-steel upper mixing elbow replacing Yanmar 129198-13500 on naturally aspirated JH engines. This package uses a straight / 180-degree bronze water-inlet barb and threads onto lower bend 129170-13000.

⚙️ Key Features

• Cast AISI 316 stainless-steel mixer

• Replaces Yanmar 129198-13500

• Straight / 180-degree water-inlet arrangement

• For naturally aspirated JH-series engines

• Threads onto 129170-13000 / HDI JHL lower bend

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• GM2 → Replaces Yanmar 129198-13500

OEM / Related Numbers:

• 129198-13500

• 129170-13000

• 123325-49421

• HDI GM2

• HDI JHB

Aftermarket / Verified Equivalents:

• HDI Marine: GM2 + JHB

Included Components:

• Mixing elbow - Part Number: 129198-13500 / HDI GM2

• Bronze water-inlet barb - HDI JHB

🚤 Compatibility

Commonly used on:

• Yanmar naturally aspirated JH wet-exhaust systems

Typically suits:

• Engine models:

• Yanmar 3JH2E

• Yanmar 3JH3E

• Yanmar 3JH5E

• Yanmar 4JHE

• Yanmar 4JH2E

• Yanmar 4JH2CE

• Yanmar 3JH25A

• Yanmar 3JH30A

• Material: cast AISI 316 stainless steel

• Internal Thread: 1-1/4 BSPT

• Exhaust Outlet: 2 in OD

• Water-Inlet Layout: straight / 180-degree

🔌 Function

The mixer introduces raw water into the exhaust gas before it enters the flexible 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