The Wacker Neuson Cotter Pin is a genuine OEM cotter pin designed for the PTS4V 100mm/4-inch centrifugal trash pump series, the GPS8500 and GS8.5V portable generators with electric start, and the RD11V hydrostatic double drum vibratory roller. As a factory-sourced fastening component, it meets Wacker Neuson's original design tolerances, ensuring a secure, correctly fitted installation every time. This single part spans multiple machine families, making it a smart stocking item for fleet operators and service technicians who run mixed Wacker Neuson equipment. Confirm your model and machine number against the fitment list before ordering.
Key Features
- Genuine OEM Material Specification — Manufactured to Wacker Neuson's original material grade and dimensional tolerance, so the pin seats and deforms correctly under installation load without the risk of premature shear or loosening.
- Drop-In Installation — Matches the original pin bore diameter and leg spread exactly, so it installs without modification into the same clevis, shaft, or linkage bore as the factory part.
- Broad Cross-Family Fitment — A single part number covering the PTS4V trash pump series, GPS8500 and GS8.5V portable generators, and the RD11V double drum roller — ideal for multi-machine service kits.
- Retains Critical Moving Connections — Cotter pins lock fasteners, pins, and shafts in position under vibration and load; a missing or failed pin can allow components to shift or disengage mid-operation.
- Safety-Critical Retention Function — On vibrating and rotating equipment, a correctly installed cotter pin is a primary safeguard against unintended fastener loosening; always replace with an OEM-spec pin rather than a generic substitute.
A cotter pin is a small split-pin fastener inserted through a drilled hole in a bolt, shaft, or clevis pin, then bent open to lock the assembly in place and prevent it from backing out under vibration or dynamic load. On equipment like trash pumps, generators, and vibratory rollers — all of which produce significant continuous vibration — this retention function is essential to keeping linkages, control rods, and drive components securely assembled. When a cotter pin shears, corrodes, or goes missing, the fastener it retains can work loose, leading to play in the connection, accelerated wear on surrounding components, or sudden disengagement of the affected assembly.
Part Details
| Part Number | 5000118478 |
|---|---|
| Old Part Number | 0118478 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Cotter Pin |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| 100mm/4in Centrifugal Trash Pu mp | PTS4V | 5000007691, 5000007683, 5000620971, 5100031221 |
| Portable Generator with Electr ic Start | GPS8500 | 5000008286 |
| Hydrostatic Double Drum Vibrat ory Roller | RD11V | 5000007694 |
| Portable Generator with Electr ic Start | GS8.5V | 5000007661 |
| PTS4V(I) Pump | PTS4V(I) | 5000620972 |
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.
