Wacker Neuson 5100023004 Filler Cap

The Wacker Neuson 5100023004 is a genuine OEM Filler Cap designed for the RC50, RC70, and RC110 series single-drum soil compactors. As a factory-sourced component, it is manufactured to the exact specifications of the original part, ensuring a proper seal and correct fit on every covered configuration. This cap covers a wide range of RC-series variants including ROPS, CAB, DPF, VO, and US models, making it a versatile stocking part for fleets running multiple compactor configurations. Replacing a damaged or missing filler cap promptly protects the fluid system from contamination and keeps your machine operating within spec.

Key Features

• Genuine OEM Sealing Integrity — Manufactured to exact Wacker Neuson tolerances, this cap delivers the compression fit needed to prevent fluid contamination and vapor loss on the RC-series fluid system.
• Direct-Fit Replacement — Threads or seats to the original filler neck without modification, matching the geometry of the factory opening across all covered RC-series builds.
• Broad RC-Series Coverage — Confirmed fitment across RC50, RC50p, RC70, RC70p, RC70vo, RC110, RC110p variants including ROPS, CAB, DPF, and US configurations.
• Contamination Protection — A properly seated filler cap keeps dirt, debris, and moisture out of the fluid reservoir, preventing accelerated component wear inside the compactor's hydraulic or engine fluid system.
• Fluid Loss Prevention — Maintains a secure closure under vibration-intensive compaction cycles, stopping fluid weepage that can lead to low-level conditions and unplanned service events.

A filler cap seals the access point on a fluid reservoir — whether engine oil, hydraulic fluid, or another service fluid — preventing contamination from entering and stopping fluid from escaping during operation. On a heavy single-drum soil compactor like the RC-series, machines operate under sustained vibration and variable terrain, which places constant stress on threaded or snap-fit closures. A cracked, stripped, or missing filler cap exposes the fluid system to dirt ingestion, which accelerates internal wear and can lead to pump or engine damage. Replacing a worn cap with the correct OEM part is one of the simplest and most cost-effective steps in a routine service inspection.

Part Details

Compatibility & Fitment

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.