The Wacker Neuson Starter Motor Relay Assembly is a genuine OEM component designed for GPS5600A and GPS6600A portable generators, GS-series 50Hz portable generators, WB16 Power Buggies, and the RSS800A single drum vibratory roller. As a direct Wacker Neuson OEM part, the is manufactured to the original electrical specification, ensuring correct coil resistance and contact rating for the starter circuit on every compatible model. This relay assembly covers a wide range of configurations across the GPS, GS, WB16, and RSS800A product families, making it the dependable choice when an original-quality replacement is required. Verify your model number before ordering to confirm fitment within this broad-coverage assembly.
Key Features
- Correct Contact and Coil Rating — Manufactured to the original electrical specification so the relay switches starter motor current at the correct voltage threshold, protecting both the starter motor and the ignition circuit.
- Genuine OEM Part — Sourced directly from Wacker Neuson, this is the same relay assembly installed at the factory — not a generic substitute.
- Broad Model Coverage — Fits GPS5600A and GPS6600A portable generators, GS4.6 and GS5.7 series 50Hz generators, WB16 series Power Buggies, and the RSS800A single drum roller across multiple build configurations.
- Direct-Connect Replacement — Matches the original connector and mounting footprint, so installation drops straight into the existing relay socket without reworking the wiring harness.
- Restores Reliable Electric Start Operation — A failed or corroded starter relay causes a no-crank condition or intermittent starting failure; replacing it with this assembly restores consistent, full-voltage engagement of the starter motor.
- Fuel System and Electrical Safety Compliance — Using the OEM-specified relay ensures the starter circuit operates within the designed current limits, preventing overheating of wiring and unintended energization of the starter.
The starter motor relay assembly acts as an electrically controlled switch that routes high-current power from the battery to the starter motor when the operator activates the ignition. Because the starter motor draws a very high initial current, a dedicated relay is used to handle that load so the ignition switch and control wiring only need to carry a small trigger current. When the relay wears out, develops high contact resistance, or fails entirely, the starter motor receives insufficient power or no power at all — resulting in slow cranking, a single click with no crank, or a completely dead start system. Replacing the relay assembly with the correct OEM part restores full electrical continuity to the starter circuit and returns the machine to reliable operation.
Part Details
| Part Number | 5000075889 |
|---|---|
| Old Part Number | 0075889 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Starter Motor Relay Assembly |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| GPS5600A,CAN GFI | GPS5600A | 5000620096, 5000620383, 5000620328, 5000620981, 5000620982, 5000620044, 5000620093, 5000620013 |
| GPS6600A GENERATOR,CAN GFI | GPS6600A | 5000620102, 5000620386, 5000620331, 5000620047, 5000620099, 5000620016 |
| Single Drum Vibratory Roller | RSS800A | 5000006582, 5000630012 |
| GPS6600A Generator, EPA | GPS6600 | 5000620987, 5000620988 |
| 50Hz Portable Generator with E lectric Start | GS5.7AE | 5000008285, 5000008279, 5000008281, 5000008283 |
| Portable Generator with Electr ic Start | GS5.6A | 5000007191, 5000008046 |
| 50Hz Portable Generator with E lectric Start | GS4.6A | 5000008275, 5000008271, 5000008273, 5000008269 |
| 50Hz Portable Generator with E lectric Start | GS4.6AE | 5000008276, 5000008270, 5000008272, 5000008274, 5000008277 |
| 50Hz Portable Generator with E lectric Start | GS5.7A | 5000008284, 5000008278, 5000008280, 5000008282 |
| Power Buggy | WB16AE | 5000009284, 5000009042, 5000009266 |
| Power Buggy | WB16AEF | 5000009290, 5000009046, 5000009272 |
| Power Buggy | WB16AES | 5000009291, 5000009047, 5000009273 |
| Power Buggy | WB16AEFS | 5000009296, 5000009052, 5000009278 |
| Portable Generator with Electr ic Start, 50Hz | GS5.7AI | 5000009039 |
| Power Buggy | WB16ADE | 5000009287, 5000009044 |
| Power Buggy | WB16ADEF | 5000009293, 5000009049 |
| 50Hz Portable Generator with E lectric Start | GS5.5A | 5000007105 |
| 50Hz Portable Generator with E lectric Start | GS4.6AI | 5000009038 |
| Power Buggy | WB16ADES | 5000009050 |
| Power Buggy | WB16ADEFS | 5000009053 |
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.
