The Wacker Neuson Oil Cooler is a genuine OEM component designed for the G40 and G50 series portable generators. As a factory-original part, it is built to the same specifications as the unit it replaces, ensuring a direct, hassle-free installation. This oil cooler is confirmed to fit multiple G40 configurations — including standard, mobile, 50Hz LATAM, and Premium variants — as well as the G50 generator.
Key Features
- Genuine OEM Construction: — Manufactured to the same thermal transfer and flow specifications as the original, ensuring consistent cooling capacity under generator load.
- Direct-Fit Replacement: — Matches OEM mounting points, port sizing, and connection hardware for the G40 and G50 generator families, so installation follows the original service procedure without adaptation.
- Broad G40 and G50 Compatibility: — Verified fitment across standard, mobile, 50Hz LATAM, and Premium G40 configurations, as well as the G50 portable generator series.
- Sustained Engine Protection Under Load: — Keeps engine oil temperatures within operating range during continuous or high-load generator runs, helping prevent viscosity breakdown and premature wear on internal engine components.
- Fuel System and Engine Safety Relevance: — Overheated oil accelerates seal degradation and can trigger thermal shutdowns; a properly functioning oil cooler keeps the generator on-line and reduces risk of unplanned outages on critical power applications.
The oil cooler in a portable generator transfers heat away from the engine oil as it circulates through the lubrication system, preventing the oil from overheating during sustained operation. When oil temperatures climb too high, the oil loses its ability to lubricate effectively, accelerating wear on pistons, bearings, and other moving parts. A failed or clogged oil cooler can cause the engine to overheat, trigger automatic shutdowns, or lead to serious internal damage — making timely replacement essential for keeping a generator running reliably on the job.
Part Details
| Part Number | 5200021186 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Oil Cooler |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Generator | G40 | 5200015906, 5200016640, 5100029184, 5200015907 |
| Generator | G50 | 5200015909 |
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.
