The Wacker Neuson Jam Nut is a genuine OEM component designed for the G-Series portable generator lineup, covering a wide range of configurations including the G25, G50, G70, G100, G120, G130, G150, G180, G240, and G320 models. As a direct factory replacement, this jam nut matches the original part in thread specification, material, and dimensions — ensuring a secure, rattle-free connection without the need for adjustment. It is the correct OEM choice for technicians and operators maintaining Wacker Neuson G-Series generators across standard, cold weather, custom, Tier 4i, and Tier 4 Final configurations.
Key Features
- OEM Thread Integrity — Manufactured to the exact thread pitch and torque spec of the original, locking fasteners securely without backing off under vibration or load.
- Drop-In Replacement — Installs directly in place of the original jam nut with no thread chasing or hardware modification needed; seats flush as designed.
- Broad G-Series Coverage — Fits a wide range of Wacker Neuson G-Series portable generators from the G25 through the G320, including standard, cold weather, custom, and Hertz variants.
- Vibration-Resistant Locking Function — A properly torqued jam nut keeps the primary fastener from loosening during generator operation, protecting critical adjustment points from drift.
- Genuine OEM Sourcing — Supplied as a verified Wacker Neuson OEM part, so you know part number 5200001397 is the right component pulled from the correct assembly reference.
A jam nut is a thin, secondary nut threaded onto a bolt or stud and tightened against a primary nut or component to lock it in position. By creating opposing clamping forces between the two nuts, it resists loosening caused by vibration — a critical requirement on generator equipment that runs continuously under load. When a jam nut is missing, overtorqued, or damaged, the primary fastener can work loose over time, leading to misalignment, component wear, or hardware failure at the affected assembly point.
Part Details
| Part Number | 5200001397 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Jam Nut |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Mobile Generators | G100 | 5200001319, 5200003859, 5200003858, 5200008348, 5100045499, 5100045555, 5100049837, 5100033312, 5100036307, 5200006900 |
| Mobile Generators | G120 | 5200001320, 5200006901, 5200003856, 5200008353 |
| Mobile Generator | G150 | 5200001321, 5200014784, 5200023237, 5100045571, 5200025554, 5100049843, 5200006902, 5100036309, 5100029212 |
| Mobile Generator | G180 | 5200001322, 5200025555, 5200006903 |
| Mobile Generators | G240 | 5200001323, 5200025556, 5200006904 |
| Mobile Generator | G70 | 5200001318, 5200006879, 5200003975, 5200008343, 5200008719, 5200023228, 5100025262, 5100042499, 5100036306, 5100042498 |
| G25 Generator, Custom T4F | G25 | 5200009372, 5100041584, 5200022587, 5100041582, 5100045542 |
| G320 Generator, Standard T4i | G320 | 5000620275, 5200008718, 5200010219, 5200010260, 5200010144, 5200010145, 5200010146, 5100045191, 5100045601, 5100045602, 5200008717, 5100018533, 5100049848, 5100049849, 5200010261 |
| G50 Generator, URI HVAC T4F | G50 | 5200022589, 5100042434, 5100045494, 5100042432 |
| G130 Generator, Custom T4 | G130 | 5200023234, 5100045560, 5100045566, 5100049840, 5100036308 |
| G150 Generator,Hertz,T4 Final | G150 Generator,Hertz,T4 Final | 5100015616 |
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.
