JHB Aftermarket Yanmar Bronze Threaded Hose Barb 123325-49421 | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket Yanmar Bronze Threaded Hose Barb 123325-49421 - Part Number: JHB

A threaded bronze cooling-water hose barb used with HDI GM2/JH mixing elbows and Yanmar exhaust systems that specify fitting 123325-49421. The fitting threads into the mixer and provides the hose connection for raw-water injection.

⚙️ Key Features

• Marine bronze construction

• Replaces Yanmar 123325-49421

• Threads into HDI GM2 and compatible JH mixers

• Provides a secure raw-water hose connection

• Available in straight or 90-degree kit arrangements

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• JHB → Replaces Yanmar 123325-49421

OEM / Related Numbers:

• JHB

• 123325-49421

• 129198-13500

• 129470-13541

Aftermarket / Verified Equivalents:

• HDI Marine: JHB

🚤 Compatibility

Commonly used on:

• Yanmar JH-series wet-exhaust mixing-elbow water inlets

Typically suits:

• Engine models:

• Yanmar 3JH2E

• Yanmar 3JH3E

• Yanmar 3JH5E

• Yanmar 4JHE

• Yanmar 4JH2E

• Yanmar 4JH2CE

• Yanmar 3JH25A

• Yanmar 3JH30A

• Material: marine bronze

• Application: threaded cooling-water injection barb

• Associated Mixer: 129198-13500 / HDI GM2

🔌 Function

The hose barb directs raw cooling water into the mixing elbow at the specified injection point.

Common signs of failure:

• Water leakage at the threaded connection

• Corroded, cracked or eroded hose barb

• Restricted cooling-water passage

• Loose or damaged exhaust-water hose

• Steam or low water discharge at the exhaust outlet

📦 Condition

• Brand new aftermarket replacement part

• New and unused

• Supplied in manufacturer or equivalent protective packaging