The Wacker Neuson is a genuine OEM M6X120 Xb40 Alternator Screw designed for GP3800A and GP4000 series portable generators. As a factory-sourced component, it is manufactured to the exact dimensions and grade specification required for proper alternator retention on these units. This screw fits across a wide range of GP3800A and GP4000 generator configurations, including standard, premium, EPA, CSA, and wheel kit variants. Keeping the correct hardware in place ensures your generator's alternator stays properly secured and continues to deliver consistent power output.
Key Features
- Genuine OEM Thread and Grade Spec — Sourced directly from Wacker Neuson, this M6X120 fastener meets the exact tensile and thread specification required to secure the alternator assembly without risk of stripping or under-torquing.
- Direct Alternator Hardware Replacement — Designed to seat and thread into the original alternator mounting position without modification, restoring the mechanical connection the alternator depends on.
- Broad GP Series Fitment — Compatible with GP3800A and GP4000 portable generators across standard, premium, EPA, CSA, and wheel kit configurations — covering a wide range of serial number variants within those families.
- Protects Alternator Alignment — A properly torqued alternator screw keeps the alternator held firmly in position, preventing vibration-induced movement that can cause electrical output irregularities or premature bearing wear.
- Electrical System Safety — Loose or incorrect alternator fasteners can allow the alternator to shift under load, creating risk of wiring contact, short circuits, or uncontrolled output voltage — making correct hardware a genuine safety consideration on generator equipment.
The alternator screw is a critical fastener that holds the alternator in fixed alignment within the generator housing. The alternator is responsible for converting mechanical energy from the engine into electrical output, and it must remain securely mounted to do so consistently and safely. When this screw is missing, stripped, or replaced with an incorrect-grade substitute, the alternator can shift under engine vibration — leading to erratic electrical output, accelerated wear on the alternator itself, and potential wiring damage.
Part Details
| Part Number | 5000162926 |
|---|---|
| Old Part Number | 0162926 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | M6X120 Xb40 Alternator Screw |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Portable Generator | GP3800A | 5000620104, 5000620379, 5000620485, 5000620342, 5000620484, 5000620041, 5000620103, 5000620010 |
| Premium Portable Generator | GP4000 | 5000620090, 5000620380, 5000620977, 5000620978, 5000620089 |
| GP3800A Generator, EPA w/Wheel Kit | GP3800 | 5000620976, 5000620974, 5000620975, 5100031174 |
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.
