128370-13201 Aftermarket Yanmar Exhaust Gasket HDI G-GML | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket Yanmar Exhaust Gasket HDI G-GML - Part Number: 128370-13201

A graphite exhaust gasket for Yanmar GM, HM and YM lower exhaust bends. It corresponds to the 128370-13201 flange pattern used with HDI GML, GM and GMKIT components.

⚙️ Key Features

• Graphite high-temperature construction

• Replaces Yanmar 128370-13201

• For GM/HM/YM exhaust-bend flange

• Matches HDI GML and GMKIT systems

• Replace whenever the lower bend is removed

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• G-GML → Replaces Yanmar 128370-13201

OEM / Related Numbers:

• 128370-13201

• HDI G-GML

• 128370-13610

• 124070-13520

Aftermarket / Verified Equivalents:

• HDI Marine: G-GML / GGML

🚤 Compatibility

Commonly used on:

• Yanmar GM/HM/YM exhaust-bend joints

Typically suits:

• Engine models:

• Yanmar 2GM / 2GM20 / 2GM30

• Yanmar 3GM / 3GMD / 3GM30 / 3GM30F

• Yanmar 3HM / 3HM35 / 3HM35F

• Yanmar 2YM15 / 3YM20 / 3YM30

• Material: graphite

• Joint: engine/manifold to lower exhaust bend

🔌 Function

The gasket seals the lower exhaust bend to the engine exhaust flange.

Common signs of failure:

• Black soot tracking around the joint

• Cooling-water seepage or salt deposits at the flange

• Exhaust smell or fumes in the engine compartment

• Burnt, split, crushed or hardened sealing material

• Corrosion or erosion of the mating faces

📦 Condition

• Brand new aftermarket replacement part

• New and unused

• Supplied in manufacturer or equivalent protective packaging