Wacker Neuson 5100011812 Drain Plug

The Wacker Neuson 5100011812 is a genuine OEM Drain Plug designed for the RD-series tandem roller lineup, covering RD18, RD24, RD27, RD28, RD40, and RD45 models across a wide range of configurations including standard, combo, offset drum, DPF, and electric variants. As a direct factory replacement, part number 5100011812 is produced to the same specifications as the original, ensuring a proper seal and correct thread engagement every time. This part covers an extensive range of RD tandem roller configurations — from walk-behind RD18 and RD24 models to the heavier RD40 and RD45 articulated ride-on rollers — making it the go-to drain plug across the full RD family. Stocking this genuine OEM component means you have the right part on hand when scheduled fluid changes or unexpected leaks demand immediate attention.

Key Features

• Genuine OEM Sealing Integrity — Manufactured to original thread pitch and seat geometry, ensuring a leak-free seal on drain ports exposed to hydraulic fluid or engine oil under operating pressure.
• Direct Drop-In Replacement — Threads directly into the factory drain port with no rework or adaptation needed; seat profile matches the original to prevent cross-threading and over-torque damage.
• Broad RD-Series Coverage — Compatible with RD18, RD24, RD27, RD28, RD40, and RD45 tandem rollers across standard, offset drum (o), combo (c), DPF, US-market, and electric (e) variants.
• Supports Proper Fluid Maintenance — A correctly seated drain plug is essential for clean fluid changes; a worn or stripped plug risks uncontrolled fluid loss and contamination of the drum drive or hydraulic system.
• Fluid System Safety — A failed or improperly seated drain plug can lead to sudden fluid loss during operation, creating both machine damage and a slip hazard on the asphalt surface being compacted.

A drain plug seals the lowest point of a fluid reservoir — typically an engine oil sump, hydraulic tank, or drum drive gearbox — allowing controlled drainage during scheduled maintenance while keeping fluid contained during operation. On RD-series tandem rollers, maintaining a properly functioning drain plug is critical because hydraulic and drive fluids operate under continuous pressure and heat cycling across long paving shifts. When a drain plug is stripped, cracked, or missing its sealing surface, slow leaks can go undetected until fluid levels drop low enough to damage bearings, pumps, or the drum drive system.

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.