Wacker Neuson 5100011829 Tank Cap with Lock

The Wacker Neuson Tank Cap with Lock is a genuine OEM component designed for the RD and RC series tandem rollers and single drum soil compactors, including the RD18-80, RD24-100, RD40-130, RC50, RC70, and their C, O, DPF, and VO variants. As a direct Wacker Neuson OEM part, the is manufactured to the same standards as the original, ensuring a correct, secure fit on every compatible machine. This cap covers an extensive range of models across both European and US market configurations, making it a go-to replacement for fleets running mixed Wacker Neuson compaction equipment.

Key Features

• Integrated Locking Mechanism — Built-in lock prevents unauthorized access to the tank and deters fuel theft or tampering on shared and multi-crew job sites.
• OEM-Matched Seal Integrity — Manufactured to original tolerances, this cap delivers a consistent compression seal that prevents fuel or fluid contamination and vapor escape.
• Drop-In Replacement — Threads directly onto the original filler neck with no adaptation needed; designed to match the original cap's geometry and thread pitch exactly.
• Broad Model Coverage — Fits over 90 model configurations across the RD18, RD24, RD27, RD28, RD40, RD45, RC50, RC70, and RC110 series, including CAB, ROPS, DPF, and VO variants.
• Fuel System Protection — A properly sealing, lockable tank cap helps keep moisture, debris, and contaminants out of the fuel system, protecting injectors and fuel delivery components from premature wear.
• Genuine Wacker Neuson Part — Sourced directly from Wacker Neuson, part number 5100011829 carries full OEM traceability for parts documentation and service records.

A tank cap with lock serves as both the primary seal for the machine's fuel or fluid tank and a physical security measure. It prevents contaminants such as water, dust, and debris from entering the tank during operation and storage, which is critical on compaction equipment working in dusty or wet site conditions. When a tank cap fails — through a cracked body, worn threads, or a damaged seal — it exposes the tank contents to contamination and can lead to fuel system faults, injector damage, or fluid loss, all of which take the machine out of service.

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.