Wacker Neuson 5000161424 Thermostat Housing

The Wacker Neuson Thermostat Housing is a genuine OEM component designed for the RD27-100 and RD27-120 Hydrostatic Vibratory Rollers. As a direct factory replacement, this housing seats the engine thermostat and maintains the coolant circuit integrity required for consistent operating temperatures on these tandem rollers. Sourced directly from Wacker Neuson, part matches the original fitment exactly, ensuring a straightforward installation without guesswork.

Key Features

• Genuine OEM Construction: — Cast to the original dimensional tolerances that allow the thermostat to seat and seal correctly, preventing coolant bypass or leaks at the housing joint.
• Direct-Fit Replacement: — Engineered to bolt into the existing coolant circuit mounting points on the RD27-100 and RD27-120, matching the original port orientation and gasket surface.
• Verified Fitment: — Confirmed for RD27-100 (5000620037) and RD27-120 (5000620038) Hydrostatic Vibratory Rollers.
• Coolant System Integrity: — A correctly sealed thermostat housing allows the engine to reach and hold its target operating temperature, supporting stable hydraulic performance during compaction passes.
• Leak Prevention: — Maintains the pressure boundary of the cooling circuit; a cracked or warped housing can cause coolant loss, leading to overheating and unplanned engine shutdowns mid-operation.

The thermostat housing encloses and supports the engine thermostat, forming a sealed junction in the coolant circuit that directs coolant flow between the engine and radiator. When the engine is cold, the thermostat stays closed and the housing routes coolant in a short loop to accelerate warm-up; once operating temperature is reached, the thermostat opens and the housing channels full coolant flow through the radiator to regulate heat. A damaged or leaking housing disrupts this circuit, causing the engine to run hot or lose coolant, which can result in overheating and reduced engine reliability on the RD27 series rollers.

For fitment questions or help confirming this part is correct for your machine, contact our parts team with your model and serial number.

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.

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