The Wacker Neuson 5000406738 is a genuine OEM Water Tank Cap designed for the MP12, MP15, and MP20 series power screed units. Sourced directly from Wacker Neuson, this cap is the same part fitted at the factory, ensuring a proper seal and correct thread engagement every time. It is confirmed compatible across multiple MP12 and MP15 configurations, including MP15-CE and MP15(RAW) variants, as well as the MP20. When your water tank cap cracks, strips, or no longer seals, replacing it with part number 5000406738 keeps your screed's water delivery system functioning as intended.
Key Features
- Genuine OEM Sealing Integrity — Manufactured to Wacker Neuson's original thread and material specification, so the cap seats and seals the water tank without weeping or loosening under vibration.
- Direct Thread-In Replacement — Matches the original tank filler neck on MP-series power screed units exactly, so installation is a straightforward hand-thread swap with no fitting adapters needed.
- Broad MP-Series Compatibility — Fits MP12, MP15, MP15-CE, MP15(RAW), MP15A, and MP20 power screed models, covering a wide range of Wacker Neuson screed configurations under a single part number.
- Vibration-Resistant Retention — Designed to stay secure during screeding operation, where engine and blade vibration can work a poorly fitting cap loose and interrupt water flow to the blade.
- Protects Water System Consistency — A sound cap maintains consistent water pressure and volume at the blade, which directly affects surface finish quality on freshly placed concrete.
The water tank cap seals the onboard water reservoir on Wacker Neuson MP-series power screed units, which supply water to the screed blade to prevent fresh concrete from sticking during finishing passes. Without a properly sealing cap, the tank can lose water through vibration-induced leakage, reducing the flow available to the blade and potentially causing the concrete surface to drag or tear. A damaged or missing cap should be replaced promptly to maintain consistent blade lubrication and protect the quality of the finished slab.
Part Details
| Part Number | 5000406738 |
|---|---|
| Old Part Number | 0406738 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Water Tank Cap |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| MP12 | MP12 | 5000630380, 5100055366, 5100067424, 5100075679 |
| MP 15 | MP 15 | 0630227 |
| MP15 | MP15 | 5000630131, 5100054291 |
| MP15-CE | MP15-CE | 5000630338 |
| MP15(RAW) | MP15(RAW) | 5000630245 |
| MP 15A | MP 15A | 0630318 |
| MP20 | MP20 | 5000630379 |
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.
