The Wacker Neuson Oil Seal is a genuine OEM component designed for the GS6503G and GS6500G generator series. Sourced directly from Wacker Neuson, this seal meets the exact material and dimensional standards of the original part, ensuring a proper drop-in fit without rework or modification. It is a direct replacement for units requiring seal service on these models, giving you confidence that the repair is done right the first time. Confirm your model number against the GS6503G and GS6500G fitment listings before ordering to ensure compatibility.
Key Features
- OEM-Grade Sealing Material — Manufactured to Wacker Neuson's original compound and hardness specifications, delivering the compression and chemical resistance required for consistent oil retention in these generators.
- Direct-Fit Replacement — Dimensionally identical to the factory-installed seal, so it seats correctly in the original housing bore without alteration.
- Confirmed Fitment — Verified for the GS6503G and GS6500G generator models; cross-reference your unit's model number before purchase.
- Prevents Oil Loss and Contamination — A properly functioning seal keeps oil where it belongs, protecting internal rotating components from starvation and preventing external leaks that can create slip hazards or environmental violations on site.
- Genuine Wacker Neuson Part — Carries the full part number 5000408578 as issued by the manufacturer, eliminating any guesswork when sourcing the correct service component.
An oil seal is a precision ring fitted around a rotating shaft — such as a crankshaft or rotor shaft — to contain lubricating oil within the engine or alternator housing while keeping dirt, moisture, and debris out. It works by maintaining consistent radial pressure against the shaft surface as it spins, forming a dynamic barrier that holds under heat and load. When an oil seal wears, cracks, or hardens with age, it loses that barrier — leading to oil seepage, contaminated bearings, and accelerated wear on surrounding components that can quickly escalate into more costly damage.
Part Details
| Part Number | 5000408578 |
|---|---|
| Old Part Number | 0408578 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Oil Seal |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| GS6503G | GS6503G CE | 5100079454 |
| GS6500G | GS6500G LA | 5100079455 |
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.
