Wacker Neuson 5200025101 Diesel Pre-Heated Filter

The Wacker Neuson Diesel Pre-Heated Filter is a genuine OEM component designed for the HI 90HD indirect-fired air heater. As a direct factory replacement, this filter is built to the exact specifications required by the HI 90HD fuel system, ensuring proper fuel delivery in cold-weather heating applications. Genuine Wacker Neuson OEM parts are sourced directly through authorized supply channels, so you can be confident the matches the original component in every critical dimension and material grade. Verify your model number before ordering to confirm fitment with your HI 90HD unit.

Key Features

• Genuine OEM Fuel System Integrity — Manufactured to Wacker Neuson's exact material and flow-rate specifications for the HI 90HD diesel fuel circuit, not a generalized cross-fit alternative.
• Pre-Heated Design — The integrated pre-heating function prevents diesel gelling and wax crystal buildup in low-temperature environments, keeping fuel flowing freely to the burner.
• Direct-Fit Replacement — Engineered as a drop-in replacement for the HI 90HD, matching original port sizing and mounting configuration for a straightforward service swap.
• HI 90HD Compatibility — Confirmed fitment for the Wacker Neuson HI 90HD indirect-fired air heater, a workhorse climate-control unit used on cold-weather construction and concrete curing sites.
• Fuel System Safety — A functioning pre-heated filter is critical to safe heater operation; a clogged or failed unit can cause erratic burner behavior or unplanned shutdowns in freezing conditions where heat loss creates real site hazards.

The diesel pre-heated filter sits in the fuel supply line of an indirect-fired air heater and performs two jobs simultaneously: it removes particulate contamination from the diesel fuel before it reaches the burner, and it applies a controlled amount of heat to the fuel to prevent wax crystals from forming in cold operating conditions. Without effective pre-heating, diesel can thicken and restrict flow at low ambient temperatures, starving the burner and causing the heater to shut down or run erratically. When this filter becomes clogged or its heating element fails, fuel starvation to the burner is the most common result — making timely replacement essential to consistent heater output.

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.

Why Buy From DHS Equipment

Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.

Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.