The Wacker Neuson Valve Adjustment Cap is a genuine OEM component designed for a range of Wacker Neuson single direction plates, generator sets, and inverter generators, including the MP20, MP12, G3500G, and GS3500Gi series. Sourced directly from Wacker Neuson, this part meets the same specifications as the cap installed at the factory, ensuring a direct, accurate fit without adaptation. It is compatible across multiple regional variants, covering CE, LA, and CN-spec machines in the G3500G and GS3500Gi lineups. When it comes to engine valve service, using the correct OEM cap matters — and part number is the verified replacement for all listed models.
Key Features
- OEM Sealing Integrity — Manufactured to Wacker Neuson's original material and thread specification, ensuring the cap seals valve adjustment points correctly without risk of oil weep or thread mismatch.
- Drop-In Installation — Engineered to the exact thread pitch and torque profile of the original, so it installs directly in place of the worn or damaged cap with no re-tapping or fitting required.
- Broad Model Coverage — Fits MP20 and MP12 single direction plates, plus G3500G and GS3500Gi generators across CE, LA, and CN regional variants.
- Protects Valve Adjustment Accuracy — A correctly fitted valve adjustment cap keeps the adjustment mechanism locked and protected from contamination, preserving precise valve clearances and smooth engine operation.
- Genuine Wacker Neuson Part — Supplied as genuine OEM stock under part number 5000408480, verified against current Wacker Neuson parts documentation for the listed models.
The valve adjustment cap covers and secures the valve clearance adjustment point on the engine cylinder head. It protects the adjuster from dirt, debris, and oil leakage while keeping the set valve clearance locked in position between service intervals. When this cap is cracked, cross-threaded, or missing, contaminants can enter the valve train area and oil can seep out — leading to incorrect valve clearances, rough running, and potential engine wear over time. Replacing a damaged cap promptly is a low-cost step that safeguards the engine's valve timing and extends service life.
Part Details
| Part Number | 5000408480 |
|---|---|
| Old Part Number | 0408480 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Valve Adjustment Cap |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Single Direction Plates | MP20 | 5000630379 |
| Single Direction Plates | MP12 | 5000630380 |
| GB3000G | GB3000G CE | 5100079446 |
| GS3500Gi | GS3500Gi CE | 5100079448 |
| G3500G | G3500G CE | 5100079450 |
| G3500G | G3500G LA | 5100079451 |
| GS3500Gi | GS3500Gi CN | 5100079595 |
| G3500G | G3500G CN | 5100079597 |
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.
Wacker Neuson
Wacker Neuson Part # 5000409366 - Valve adjustment cap - Genuine OEM Part
