The Wacker Neuson Torsion Spring is a genuine OEM component designed for GPS8500, GPS9700, GS8.5V, and GS9.7V series portable generators. Sourced directly through authorized Wacker Neuson supply channels, this part meets the exact specifications of the original installed component. Confirmed fitment spans both standard electric-start and premium portable generator configurations across these model families.
Key Features
- Genuine OEM Tension Integrity — manufactured to the original torque and deflection spec, ensuring the spring delivers consistent rotational force under repeated cycling without fatigue creep.
- Drop-In Replacement — engineered to the same geometry as the factory-installed part, seating correctly into the existing mounting points without modification to surrounding hardware.
- Broad Generator Fitment — compatible with GPS8500, GPS9700, GS8.5V, and GS9.7V portable generators, covering both electric-start and premium output configurations.
- Sustained Mechanical Response — a correctly functioning torsion spring maintains consistent return force in the mechanism it controls; a worn or broken spring leads to sluggish engagement, erratic operation, or complete mechanical failure of the linked assembly.
- Verified Part Number — order with confidence using Wacker Neuson part number 5000118558 to confirm an exact match to your generator's original spring specification.
A torsion spring stores and releases rotational energy to apply torque around its axis, keeping mechanical assemblies — such as throttle controls, recoil linkages, or governor mechanisms — under the correct amount of spring tension at all times. In a portable generator, maintaining that precise tension is critical to smooth, repeatable operation of whatever component the spring governs. When a torsion spring weakens, deforms, or breaks, the linked mechanism loses its return force, which can cause inconsistent engine response, failure to return to a set position, or an inability to engage or disengage the controlled assembly altogether.
Part Details
| Part Number | 5000118558 |
|---|---|
| Old Part Number | 0118558 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Torsion Spring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Portable Generator with Electr ic Start | GPS9700 | 5000008287, 5000620264 |
| Portable Generator with Electr ic Start | GPS8500 | 5000008286 |
| Portable Generator with Electr ic Start | GS8.5V | 5000007661 |
| Portable Generator with Electr ic Start | GS9.7V | 5000007662 |
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.
