The Wacker Neuson Fuel Tank Cap is a genuine OEM component designed for the CUB300HD Portable Indirect Fired Air Heater Heavy Duty with LB. As a direct OEM replacement, this cap is manufactured to the exact specifications of the original, ensuring a proper seal on the fuel tank and consistent performance in demanding jobsite heating applications. If your existing cap is cracked, missing, or no longer sealing correctly, replacing it with the correct Wacker Neuson is the straightforward fix to keep your heater running safely and efficiently.
Key Features
- Correct Sealing Specification: — Engineered to the exact thread pitch and sealing surface of the OEM fuel tank, preventing fuel vapor loss and contamination ingress.
- Genuine OEM Part: — Sourced directly from Wacker Neuson, this cap carries the same part number and construction as the component that shipped with your machine from the factory.
- Direct Fit for CUB300HD: — Confirmed fitment for the CUB300HD Portable Indirect Fired Air Heater Heavy Duty with LB — installs without modification to the existing tank filler neck.
- Fuel System Integrity: — A properly fitted tank cap maintains correct fuel system pressure and prevents moisture or debris from entering the fuel supply, protecting burner performance in cold-weather heating operations.
- Fuel Safety Compliance: — A secure, properly rated fuel cap is essential on liquid-fueled heating equipment; using the correct OEM cap ensures the closure meets the design and safety requirements of the original heater assembly.
The fuel tank cap seals the filler opening on the heater's fuel tank, keeping diesel fuel contained and the fuel system free from contamination. On indirect fired air heaters like the CUB300HD, a compromised or missing cap can allow moisture, dirt, and debris into the fuel supply, which can clog the burner assembly and disrupt heating output. A failed cap can also allow fuel vapors to escape, creating a safety concern — making timely replacement with the correct part a straightforward but important maintenance step.
Part Details
| Part Number | 5000173890 |
|---|---|
| Old Part Number | 0173890 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Fuel Tank Cap |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Portable-Indirect Fired Air He ater-Heavy Duty w/LB | CUB300HD | 5000620253 |
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.
