The Wacker Neuson Bearing is a genuine OEM component designed for the G25 and G20 series portable generators, covering skid-mounted, custom, cold weather, extended run, and Tier 4 Final and Tier 4i configurations. As a direct OEM replacement, this bearing is manufactured to the same specifications as the original part installed at the factory, ensuring proper fit and function across the wide range of G25 and G20 variants it serves. Whether you're servicing a standard skid-mounted unit, a cold weather build, or a switchable 600V T4i configuration, part number is the correct bearing for the application. Cross-reference your machine's model number against the G25 and G20 fitment list to confirm compatibility before ordering.
Key Features
- OEM-Grade Dimensional Tolerancing — Manufactured to Wacker Neuson's original specifications, ensuring correct load rating, bore size, and seating geometry for generator drivetrain applications.
- Drop-In Installation — Designed to seat directly into the original bearing housing with no rework, matching the mounting interface of the factory-installed component.
- Broad G25 and G20 Series Coverage — Fits a wide range of G25 configurations including standard, custom, cold weather, extended run, URI HVAC, Battlefield, and 600V switchable T4i and T4F models, as well as select G20 variants.
- Protects Rotating Assembly Integrity — A worn or failed bearing allows excessive shaft play, which leads to vibration, premature seal wear, and potential damage to the generator's alternator or engine coupling.
- Verified Genuine OEM Part — Sourced directly through the Wacker Neuson parts network, so you receive the same component used in original production builds.
A bearing supports and constrains rotating shafts within the generator's drivetrain, maintaining precise alignment between the engine and alternator while absorbing radial and axial loads generated during operation. When a bearing is functioning correctly, the rotating assembly runs smoothly and quietly with minimal friction. As a bearing wears, it develops play or roughness that introduces vibration, increases heat, and accelerates wear on surrounding components — left unaddressed, a failed bearing can cause shaft misalignment or secondary damage to the alternator rotor and housing.
Part Details
| Part Number | 5200004644 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Bearing |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Mobile Generator, Custom | G25 | 5000620346, 5000620344, 5000620345, 5000620642, 5000009466, 5000620004, 5000620640, 5000620709, 5000620641, 5000009368, 5200005557, 5200003991, 5000620931, 5200001316, 5200009372, 5200009376, 5200009370, 5200009371, 5200009373, 5200009377, 5200014461, 5200009375, 5200009374, 5200014460, 5200014462, 5000621005, 5100041584, 5200022587, 5100045084, 5100041580, 5100041592, 5000620706, 5100017591, 5100022834, 5100041581, 5100041582, 5100041583, 5100045541, 5100045542, 5100050326, 5100042507, 5100042510, 5100042512, 5100042509, 5100025836, 5100042508 |
| Mobile Generator | G20 | 5200016628, 5200022625 |
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.
