128890-13530 Aftermarket Yanmar Stainless Steel Exhaust Elbow | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket Yanmar Stainless Steel Exhaust Elbow - Part Number: 128890-13530

An AISI 316 stainless-steel exhaust mixing elbow replacing Yanmar 128890-13530, 128370-12530 and 128397-13530. This unsized listing must be matched to the original 17mm or 21-22mm cooling-water inlet before installation.

⚙️ Key Features

• AISI 316 stainless-steel construction

• Replaces 128890-13530 / 128370-12530 / 128397-13530

• For later 3GM30 and early YM-series engines

• Available with different water-inlet diameters

• Measure the original water hose before ordering

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 128890-13530 → Cross-references to 128370-12530 and 128397-13530

OEM / Related Numbers:

• 128890-13530

• 128370-12530

• 128397-13530

• HDI GMS

• HDI YMS

Aftermarket / Verified Equivalents:

• HDI Marine: GMS 17mm version

• HDI Marine: YMS 21-22mm version

• Recmar: MAR128890-13530

🚤 Compatibility

Commonly used on:

• Yanmar compact GM/YM wet-exhaust systems

Typically suits:

• Engine models:

• Yanmar 3GM30

• Yanmar 2YM15 below serial E4990

• Yanmar 3YM20 below serial E10518

• Yanmar 3YM30 below serial E17724

• Material: AISI 316 stainless steel

• Water-Inlet Options: 17mm or 21-22mm

• Installation Note: verify inlet size on the original elbow

🔌 Function

The elbow turns engine exhaust and introduces raw water before discharge into 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