Wacker Neuson 5100012536 Water Cooler

The Wacker Neuson Water Cooler is a genuine OEM component designed for the RD40-130 and RD45-140 tandem roller series, including C, O, and.3 variants across both standard and US configurations. As a direct OEM replacement, this part is built to the exact specifications of the original unit installed at the factory, ensuring a correct, trouble-free fit on supported machines. It covers an extensive range of RD40-130 and RD45-140 variants, making it the right choice whether you're servicing a standard, canopy, or open-rollbar configuration. When it's time to restore your roller's cooling system, part number is the correct part to order.

Key Features

• OEM Cooling Capacity: — Engineered to match the original heat-transfer performance of the factory-installed unit, maintaining proper engine operating temperatures under continuous compaction loads.
• Direct-Fit Replacement: — Mounts using the original brackets, hose connections, and hardware positions, so installation follows the standard service procedure without improvisation.
• Broad RD-Series Coverage: — Compatible with RD40-130 and RD45-140 tandem rollers across C, O, and .3 sub-variants in both standard and US-spec configurations.
• Protects Engine Longevity: — A failed or degraded water cooler allows coolant temperatures to climb, accelerating wear on internal engine components and risking thermal shutdown mid-job.
• Genuine Wacker Neuson Part: — Supplied as an authentic OEM component, manufactured to the same material and dimensional standards as the part it replaces.

The water cooler manages engine coolant temperature by transferring heat away from the circulating coolant before it returns to the engine. On compact tandem rollers like the RD40-130 and RD45-140 that operate under sustained load in warm conditions, consistent cooling is critical to keeping the engine within its safe thermal range. When the water cooler degrades — through corrosion, leaks, or blocked passages — coolant temperatures rise, engine performance drops, and the risk of thermal damage or unplanned shutdown 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.