Wacker Neuson 5100038725 Option Duct Adapter, Inlet (White)

The Wacker Neuson Option Duct Adapter, Inlet (White) is a genuine OEM component designed for the HI750, HI900, and HI1000 series indirect-fired air heaters. As a direct OEM replacement, this inlet duct adapter is sourced from Wacker Neuson and manufactured to the same specifications as the original part fitted at the factory. Compatible across a wide range of HI-series configurations — including diesel, gas, natural gas/LP, DGM, skid-mounted, and mobile variants — this adapter ensures the correct inlet connection is maintained across the full lineup. When you need to restore proper airflow ducting to your indirect heater, part number is the correct, verified replacement.

Key Features

• Genuine OEM Inlet Specification: — Manufactured to Wacker Neuson's exact inlet geometry and connection dimensions, ensuring the duct seals and mates correctly without gaps or airflow leakage at the inlet port.
• Drop-In Replacement: — Installs directly in place of the original inlet adapter; all mounting points and duct connection interfaces match the factory configuration on HI-series heaters.
• Broad HI-Series Fitment: — Confirmed compatible with HI750, HI900, and HI1000 series heaters across diesel, gasoline, natural gas/LP, DGM, skid-mounted, and mobile indirect-fired configurations.
• Sustains Heater Airflow Efficiency: — A correctly fitted inlet adapter maintains the designed air intake volume, allowing the burner to operate at rated heat output. A damaged or missing inlet adapter disrupts airflow balance and reduces heating performance.
• Fuel System Safety Relevance: — Proper inlet ducting is critical on indirect-fired heaters; a compromised inlet connection can affect combustion air supply and burner operation, making correct adapter fitment an important safety consideration.

The inlet duct adapter on an indirect-fired air heater channels ambient air into the burner assembly, providing the combustion air supply needed for reliable ignition and sustained heat output. On HI-series heaters, this component also serves as the connection point for optional ducting extensions that direct fresh air intake from outside the heated space or trailer enclosure. When the adapter is cracked, missing, or incorrectly fitted, combustion air volume can drop, causing incomplete combustion, reduced output temperatures, or burner lockout faults. Replacing a worn or damaged inlet adapter restores the intended airflow path and keeps the heater operating safely at its rated capacity.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

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