The Wacker Neuson Oil Filler Cap is a genuine OEM component designed for the G40, G50, G60, and G70 series portable generators. As a direct OEM replacement, it is manufactured to the exact specifications of the original part, ensuring a correct, secure seal on the engine oil fill port. This cap fits across multiple G-series generator configurations, including standard, mobile, and premium variants in both 60 Hz and 50 Hz builds.
Key Features
- OEM Sealing Integrity — Manufactured to match the original cap's thread pitch and sealing surface, keeping oil securely contained and contaminants out of the crankcase.
- Direct-Fit Replacement — Threads directly onto the engine oil fill port of G40, G50, G60, and G70 generators with no adaptation needed.
- Broad G-Series Compatibility — Verified fitment across standard, mobile, and premium generator variants, including 50 Hz LATAM and Brazil-market builds.
- Protects Engine Oil Quality — A properly seating filler cap prevents oil loss, moisture ingress, and airborne debris from entering the lubrication system during operation.
- Fuel System Safety Relevance — A cracked, loose, or missing oil filler cap can allow oil to contact hot engine surfaces, creating a fire and smoke hazard on-site.
The oil filler cap seals the engine's oil fill port, preventing oil from escaping and blocking contaminants — dirt, moisture, and debris — from entering the lubrication system. On a portable generator running under load, a damaged or missing cap can cause rapid oil loss, accelerated engine wear, or oil contact with hot exhaust components. Replacing a worn or cracked cap with the correct OEM part restores the secure seal the engine relies on for clean, consistent lubrication.
Part Details
| Part Number | 5200021188 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Oil Filler Cap |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Mobile Generator | G60 | 5200015951, 5200016641, 5100029185 |
| G70 | G70 | 5200015952, 5100022041, 5100022040 |
| Generator | G40 | 5200015906, 5200016640, 5100029184, 5200015907 |
| Generator | G50 | 5200015909, 5100022009, 5100022008 |
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.
