The Wacker Neuson 5000406648 Fuel Tank Cap is a genuine OEM component designed for the BFSX20A and BFSX18A floor saws. As a direct factory replacement, this cap matches the original specification for thread pitch, seal diameter, and venting behavior — ensuring a proper fit from the first installation. Sourced directly from Wacker Neuson, it carries the same part number used in factory assembly and authorized service, so there's no guesswork on compatibility.
Key Features
- OEM Seal Integrity: — Manufactured to the original material and thread specification, delivering the same fuel-tight seal as the factory-installed cap.
- Direct Thread Match: — Threads directly onto the OEM fuel tank filler neck of the BFSX20A and BFSX18A — no adapters or modifications needed.
- Verified Floor Saw Fitment: — Confirmed compatible with Wacker Neuson BFSX20A and BFSX18A floor saws, covering both models in the BFSX series.
- Fuel System Protection: — A correctly sealing cap prevents fuel contamination, evaporative loss, and spill hazards during transport and operation of the saw.
- Fuel Spill Safety: — A failed or missing tank cap on a gas-powered floor saw creates a serious fire and spill risk on active cut sites; replacing it promptly with the correct OEM part is a straightforward but critical fix.
The fuel tank cap seals the filler opening on the saw's fuel tank, keeping the fuel supply clean and contained during operation and transport. A properly functioning cap maintains the correct pressure balance in the tank and prevents debris, water, or dust — common on concrete cutting sites — from entering the fuel system. When a cap is cracked, missing, or no longer sealing correctly, it can lead to fuel leaks, engine contamination, and unsafe operating conditions.
Part Details
| Part Number | 5000406648 |
|---|---|
| Old Part Number | 0406648 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Fuel Tank Cap |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Floor Saws | BFSX20A | 5000630203 |
| Floor Saws | BFSX18A | 5000630188 |
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.
