The Wacker Neuson Oil Pan Gasket is a genuine OEM component designed for G40 and G50 series portable generators. Sourced directly from Wacker Neuson, this gasket is manufactured to the exact material composition and compression profile required by the engine assembly, ensuring a dependable oil-tight seal at the pan-to-block interface. Confirmed fitment spans multiple G40 and G50 generator configurations, including mobile and stationary variants across regional and premium model lines. When it's time for an oil pan service or bottom-end repair, the is the correct part to restore the engine to proper working condition.
Key Features
- OEM-Grade Sealing Material — Manufactured to the exact material spec and compression rating required for the G40/G50 engine block interface, delivering a consistent, leak-free seal.
- Direct Drop-In Replacement — Engineered to match the original gasket profile and bolt pattern exactly, so it seats correctly against the pan flange without trimming or shimming.
- Broad G40 and G50 Generator Fitment — Confirmed compatible with G40 and G50 generator models, including mobile generator and premium LATAM configurations.
- Protects Engine Oil Integrity — A properly seated oil pan gasket maintains correct crankcase pressure and prevents oil contamination or loss — both of which directly affect engine lubrication and service life.
- Fuel System Safety Relevance — An oil pan leak left unaddressed can result in oil contacting hot exhaust components, creating a fire risk on operating generators — making prompt replacement with a correctly rated gasket a safety priority.
The oil pan gasket forms the seal between the engine's oil pan and the bottom of the engine block, containing the engine oil within the lubrication circuit. It must withstand constant exposure to hot oil, thermal cycling, and the mechanical vibration characteristic of generator operation. When this gasket degrades, cracks, or is disturbed during service, oil seepage at the pan rail is the typical result — leading to low oil levels, potential engine damage, and a visible leak beneath the unit. Replacing it with the correct OEM gasket, such as the Wacker Neuson 5200021139, ensures the proper material and profile are restored so the engine maintains full oil pressure and clean operation.
Part Details
| Part Number | 5200021139 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Oil Pan Gasket |
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.
