The Wacker Neuson Secondary Air Filter is a genuine OEM component designed for the HIF690 indirect air heater. As a factory-authorized part, it meets the exact specifications set by Wacker Neuson for this heater series, ensuring the air filtration system performs as intended. This is a direct-fit replacement sourced straight from the manufacturer, so you can install with confidence knowing the part number, dimensions, and interface match your machine exactly.
Key Features
- OEM Filtration Media: — Manufactured to Wacker Neuson's original filter efficiency and media density specs, so combustion air stays clean without restrictive airflow pressure drop.
- Drop-In Housing Fit: — Engineered to seat correctly in the HIF690 filter housing with no trimming or adaptation — the filter seals flush against the housing collar just like the original.
- HIF690 Series Compatibility: — Verified fitment for the HIF690 indirect air heater, giving you confidence you're ordering the right part the first time.
- Sustained Heater Output: — A clean secondary filter keeps the combustion air supply consistent, supporting steady heat output and fuel efficiency across extended run cycles.
- Combustion Safety: — A degraded or blocked secondary air filter can allow contaminated air into the combustion chamber, risking incomplete combustion and hazardous exhaust conditions — this OEM replacement restores the designed safety margin.
The secondary air filter sits downstream of the primary filter in a two-stage air filtration system, catching any fine particulates that pass through the first stage before they reach the combustion chamber. On an indirect air heater like the HIF690, clean combustion air is critical — even small amounts of dust or debris entering the burner can disrupt the air-to-fuel ratio, leading to incomplete combustion, sooting, or heater shutdown. When the secondary filter becomes clogged or torn, combustion quality degrades and the heater may cycle off prematurely or produce reduced heat output; replacing it on schedule keeps the unit running at full rated performance.
Part Details
| Part Number | 5100053943 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Secondary Air Filter |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HIF690 | HIF690 | 5100047562 |
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.
