Wacker Neuson 5100012311 Water Cooler — RD18 Series Tandem Rollers

The Wacker Neuson Water Cooler is a genuine OEM Water Cooler designed for the RD18-80, RD18-100, and RD18-100 C series tandem and vibration rollers. Sourced directly from Wacker Neuson, this part meets the exact engineering standards specified for your machine, ensuring the cooling system performs as intended from the moment it is installed. The covers an extensive range of RD18 configurations — including US and SE variants — so you can order with confidence that this is the correct part for your roller. Keeping the engine coolant circuit operating within its designed range is critical to uptime on the compaction site, and this genuine replacement delivers exactly that.

Key Features

• OEM-Spec Coolant Flow Capacity — Built to the same internal core dimensions and flow ratings as the original, ensuring the cooling circuit maintains correct operating temperature under sustained compaction loads.
• Direct Drop-In Replacement — Matches the original mounting points, inlet/outlet port sizing, and connection orientation on RD18-series machines, so installation aligns with existing hose and bracket positions without rework.
• Broad RD18 Series Coverage — Fits RD18-80, RD18-100, and RD18-100 C models across standard, US, and SE variants, as well as .3-generation machines including the RD18-80.3, RD18-100.3, and RD18-100c.3.
• Prevents Overheating-Related Engine Damage — A worn or blocked water cooler allows coolant temperatures to climb unchecked, risking head gasket failure, cylinder damage, and unplanned engine shutdowns — this OEM unit restores full thermal protection.
• Genuine Wacker Neuson Part — Part number 5100012311 is an authorized Wacker Neuson component, carrying the traceability and quality assurance that comes with genuine OEM supply.

The water cooler is a core component of the engine's liquid cooling system. It works by transferring heat away from the engine coolant, preventing the engine from reaching damaging temperature levels during operation. On compaction equipment like the RD18 series tandem rollers — which run under sustained load in demanding site conditions — a properly functioning water cooler is essential to maintaining consistent engine output and protecting internal engine components. When the water cooler deteriorates or becomes blocked, coolant temperatures rise, efficiency drops, and the risk of serious engine damage increases significantly.

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.