The Wacker Neuson Thermostat is a genuine OEM component designed for the G40, G50, G60, G70, G95, and G110 series portable generators. As a direct OEM replacement, this thermostat is manufactured to the same specification as the original part, ensuring correct operating temperature regulation from the first hour of use. It fits an extensive range of G-series generator configurations including standard, mobile, 50Hz LATAM, and Brazil market variants. Keep the right part on hand to avoid unplanned engine downtime on your job.
Key Features
- OEM-Matched Temperature Rating — Manufactured to the exact opening temperature specification of the original thermostat, so the engine reaches and holds its correct operating range.
- Drop-In Replacement — Engineered to the same housing dimensions and seat geometry as the factory part, seating correctly in the coolant passage without modification.
- Broad G-Series Compatibility — Fits G40, G50, G60, G70, G95, and G110 generator models across standard, mobile, 50Hz LATAM, and Brazil Premium/Value configurations.
- Protects Engine Longevity — A correctly functioning thermostat keeps the engine in its optimal thermal window, preventing the accelerated wear and fuel inefficiency caused by chronic under- or over-temperature operation.
- Fuel System Safety — Proper coolant temperature regulation is critical to safe fuel combustion; a stuck-open or stuck-closed thermostat can lead to incomplete combustion or dangerous overheating in a generator under load.
The thermostat controls coolant flow between the engine block and the radiator, holding coolant in the engine until it reaches the correct operating temperature and then opening to allow hot coolant to pass through the radiator for cooling. This regulated cycle keeps the engine in its optimal thermal range during operation. When a thermostat fails — whether stuck open or stuck closed — the engine either runs chronically cold and inefficient or overheats rapidly, risking serious internal damage to the generator's power unit.
Part Details
| Part Number | 5200021386 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Thermostat |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Mobile Generator | G95 | 5200016642, 5200020677, 5100029186 |
| Mobile Generator | G60 | 5200015951, 5200016641, 5100029185 |
| G70 | G70 | 5200015952, 5100022041, 5100022040 |
| Generator | G40 | 5200015906, 5200016640, 5100029184, 5200015907 |
| Generator | G50 | 5200015909, 5100022009, 5100022008 |
| G110 Generator, Brazil, Value | G110 | 5100022042, 5100022043 |
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.
