The Wacker Neuson Filler/Breather Cap is a genuine OEM component designed for the RD880V Double Drum Vibratory Roller. Sourced directly from Wacker Neuson, this cap carries the exact specifications required for proper fitment and function on the RD880V. Matching the original part number ensures you receive the correct cap for your machine — no guesswork, no fitment surprises.
Key Features
- Genuine OEM Sealing Integrity — Manufactured to the exact material grade and thread specification of the original, ensuring the cap seats and vents precisely as designed for the RD880V fluid system.
- Direct Drop-In Replacement — Threads directly onto the original filler neck, restoring the fluid access and breather function without additional hardware or modification.
- Confirmed Fitment for the RD880V — Verified against the RD880V Double Drum Vibratory Roller, so you can order with confidence using part number 5000078990.
- Maintains Proper System Pressure and Ventilation — A correctly functioning filler/breather cap allows controlled venting of the fluid reservoir while keeping contaminants out; a failed or missing cap can introduce debris and cause pressure imbalances that degrade fluid condition.
- Fuel and Fluid System Safety — A properly sealed and venting cap prevents pressurization of the reservoir and reduces the risk of fluid leaks or spills during machine operation.
A filler/breather cap serves a dual purpose on heavy compaction equipment: it provides a sealed access point for filling the fluid reservoir and allows the system to breathe — venting excess pressure that builds as fluid warms and expands during operation. Without a functioning breather cap, pressure can build inside the reservoir, or the system may draw in unfiltered air and contaminants. On a tandem roller like the RD880V, where fluid system integrity directly affects drum drive performance and smooth operation, keeping this small but critical component in good condition is essential to keeping the machine running as intended.
Part Details
| Part Number | 5000078990 |
|---|---|
| Old Part Number | 0078990 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Filler/Breather Cap |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Double Drum Vibratory Roller | RD880V | 5000006736 |
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.
