The Wacker Neuson Oil Filler Plug Assembly is a genuine OEM component designed for the HIF 690 Flameless Air Heater series. Sourced directly from Wacker Neuson, this part carries the same specifications as the original, ensuring a correct, trouble-free installation. It is confirmed to fit the HIF 690 models built around both the standard and Kubota engine configurations, covering the full range of HIF 690 equipment in the field.
Key Features
- Genuine OEM Sealing Integrity — Manufactured to Wacker Neuson's original material and thread specifications, so the plug seats and seals exactly as the factory-built unit did.
- Direct Drop-In Fitment — Threads directly into the existing filler port with no rework required; the assembly includes all hardware needed for a complete installation.
- Confirmed HIF 690 Compatibility — Verified fitment for HIF 690 Flameless Air Heaters, including both the standard and Kubota engine variants.
- Leak-Free Oil Retention — A properly seated oil filler plug keeps the oil system closed and pressurized correctly; a worn or damaged plug risks contamination and oil loss that can accelerate engine wear.
- Fuel System Safety Compliance — Maintaining a correctly sealed oil filler is essential to safe heater operation; an improperly sealed plug can allow contaminants into the oil circuit, compromising lubrication integrity under sustained heater use.
The oil filler plug assembly seals the oil filler port on the heater's engine, preventing oil from escaping and keeping contaminants out of the lubrication system during operation. A correctly functioning plug maintains the closed integrity of the oil circuit, which is critical for consistent engine lubrication — particularly during the extended run cycles typical of flameless heating applications. When the plug or its sealing components degrade, oil loss and contamination can follow, leading to accelerated wear and potential engine damage if left unaddressed.
Part Details
| Part Number | 5100028317 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Oil Filler Plug Assembly |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HIF 690 Flameless Air Heater | HIF690 | 5100017599, 5200021915 |
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.
