The Wacker Neuson Valve Adjusting Bolt is a genuine OEM component designed for a wide range of Wacker Neuson equipment, including MG3 and MG5 portable generators, MP15 and MP70 single direction plates, MPU 29 reversible plates, MFS12 and MFS14 floor saws, MDP3 trash pumps, ML225, ML240, ML425, and ML440 light towers, and MFP1.5 and MFP2 fire pumps. Sourced directly from Wacker Neuson, this bolt meets the exact specifications of the original part it replaces, ensuring a correct fit within the valve train assembly. With broad fitment across Wacker Neuson's compact equipment lineup, this is a practical stock item for service technicians and fleet operators maintaining multiple machine types.
Key Features
- Genuine OEM Thread and Torque Specification — Manufactured to the exact thread pitch and material grade specified by Wacker Neuson, ensuring consistent clamping force in the valve adjustment mechanism.
- Direct Drop-In Installation — Replaces the original bolt without modification, threading directly into the rocker arm or adjuster as designed for these engine configurations.
- Broad Equipment Compatibility — Fits across Wacker Neuson MG3, MG5, MP15, MP70, MPU 29, MFS12, MFS14, MDP3, ML-series light towers, and MFP fire pump models in a single part number.
- Correct Valve Clearance Retention — A properly spec'd adjusting bolt holds valve clearance settings accurately, supporting clean combustion, efficient power output, and stable engine operation across load cycles.
- Engine Safety and Valve Train Integrity — A worn or incorrect valve adjusting bolt can cause clearance drift, leading to valve float, power loss, or engine damage — using the correct OEM bolt protects against these failure modes.
The valve adjusting bolt is a critical fastener within the engine's valve train, used to set and lock the precise clearance between the rocker arm and valve stem. Correct valve clearance directly affects how efficiently the engine breathes — too tight and valves may not seat properly, causing heat damage and compression loss; too loose and the engine runs rough with reduced power output. When this bolt stretches, strips, or loses its locking ability, valve clearance can shift during operation, making prompt replacement essential to maintaining engine performance and longevity.
Part Details
| Part Number | 5000403996 |
|---|---|
| Old Part Number | 0403996 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Valve Adjusting Bolt |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| MP15 | MP15 | 5000630131, 5000630227 |
| Light Towers | ML440 | 5000630117, 5000630204, 5000630323, 5000630324, 5000630325, 5000630327 |
| Light Towers | ML240 | 5000630118, 5000630205, 5000630326 |
| Light Towers | ML425 | 5000630119, 5000630206 |
| Light Towers | ML225 | 5000630120, 5000630207 |
| Modular Internal Vibrators | MD3.5 | 5000630242 |
| Single Direction Plate | MP70 | 5000630243 |
| Single Direction Plates | MP15-CE | 5000630338 |
| Portable Generators | MG5 | 5000630137, 5000630143, 5000630233, 5000630254, 5000630224, 5000630229, 5000630237, 5000630239, 5000630252, 5000630308, 5000630310, 5000630334 |
| Trash Pumps | MDP3 | 5000630140, 5000630144, 5000630176, 5000630177 |
| Reversible Plates | MPU 29 | 5000630141, 5000630228 |
| Floor Saw | MFS14 | 5000630186, 5000630221 |
| Floor Saw | MFSX14 | 5000630246 |
| Portable Generators | MG3 | 5000630142, 5000630135, 5000630256, 5000630225, 5000630230, 5000630234, 5000630238, 5000630240, 5000630253, 5000630309, 5000630311, 5000630335 |
| Floor Saw | MFS12 | 5000630187, 5000630220 |
| Portable Generators | MG3sd | 5000630201, 5000630215, 5000630235 |
| Portable Generators | MG5sd | 5000630202, 5000630214, 5000630236 |
| MG5 Generator | MG5d | 5000630211 |
| MG3 Generator | MG3d | 5000630213 |
| Fire Pump | MFP1.5 | 5000630258 |
| Fire Pump | MFP2 | 5000630259 |
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