The Wacker Neuson Piston Pin Lock is a genuine OEM component designed for PTS4V centrifugal trash pumps, GPS9700 and GPS8500 portable generators, GS-series generators, and RD11V and RD880V double drum vibratory rollers. As a direct OEM replacement, the is manufactured to the exact specifications required to keep your engine's piston assembly properly secured during operation. This part spans several Wacker Neuson equipment families, so confirming your model number before ordering is always recommended. Trust the genuine OEM part to deliver the precision fit your engine demands.
Key Features
- Genuine OEM Retention Integrity — Manufactured to exact dimensional tolerances to ensure the piston pin stays positively locked within the connecting rod assembly, preventing lateral movement under load.
- Drop-In Engine Fit — Designed to seat directly into the piston pin bore without modification, maintaining the correct interference and clearance specifications for the engine's reciprocating assembly.
- Broad Wacker Neuson Compatibility — Fits PTS4V trash pumps, GPS9700 and GPS8500 portable generators, GS8.5V and GS9.7V generators, and RD11V and RD880V double drum vibratory rollers.
- Critical Engine Protection — A failed or missing piston pin lock can allow the pin to migrate, causing catastrophic damage to the cylinder bore, piston, and connecting rod — genuine OEM quality safeguards against this failure mode.
- Fuel System and Power Output Continuity — Keeping the piston assembly correctly retained ensures consistent compression and stroke, supporting stable power delivery across all compatible machine types.
A piston pin lock — also known as a circlip or snap ring — is a small but critical retaining component that holds the piston pin in position within the piston, preventing it from contacting and scoring the cylinder wall during the engine's combustion cycle. Without a properly seated lock, the piston pin can walk sideways under the intense forces of repeated firing strokes, leading to rapid and severe internal engine damage. Replacing a worn, bent, or missing piston pin lock at service intervals is an inexpensive step that protects the entire engine assembly.
Part Details
| Part Number | 5000118434 |
|---|---|
| Old Part Number | 0118434 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Piston Pin Lock |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| 100mm/4in Centrifugal Trash Pu mp | PTS4V | 5000007691, 5000007683, 5000620971, 5100031221 |
| Portable Generator with Electr ic Start | GPS9700 | 5000008287, 5000620264, 5200005042, 5000620973, 5100036768 |
| 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 |
| Portable Generator with Electr ic Start | GS9.7V | 5000007662 |
| PTS4V(I) Pump | PTS4V(I) | 5000620972 |
| Double Drum Vibratory Roller | RD880V | 5000006736 |
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.
