The Wacker Neuson Snap Ring is a genuine OEM component designed for the APT6S and APT6T pump series, including standard, surge brake, electric brake, and cold weather configurations. As a factory-sourced part, the meets the same material and dimensional standards as the original, ensuring a straightforward drop-in installation with no guesswork on fit. This snap ring is stocked to cover the full range of APT6S and APT6T variants, making it a reliable choice whether you're servicing a skid-mounted unit or a cold weather brake-equipped pump.
Key Features
- Genuine OEM Retention Integrity — Manufactured to the exact spring-back tension and groove tolerancing required for secure shaft or bore retention in Wacker Neuson pump assemblies.
- Drop-In Replacement — Seats directly into the original groove without resizing or modification, maintaining proper component positioning throughout the drivetrain.
- Broad APT Series Coverage — Fits the APT6S and APT6T pump families across surge brake, electric brake, and cold weather variants, covering six distinct model configurations under a single part number.
- Prevents Component Migration — A correctly functioning snap ring holds rotating or sliding components in their designed axial position; a worn or missing ring allows unwanted movement that leads to accelerated bearing wear and pump failure.
- Brake System Positional Control — On brake-equipped APT6T models, proper snap ring function is directly tied to the correct seating of brake-related components, making timely replacement critical to safe trailer operation.
A snap ring is a small but structurally critical fastener that clips into a machined groove on a shaft or inside a bore, locking adjacent components in their correct axial position. In pump assemblies like the APT6S and APT6T, snap rings prevent internal parts from shifting under load or vibration, which would otherwise cause misalignment, uneven wear, and eventual mechanical failure. When a snap ring becomes distorted, fatigued, or dislodged, the components it was securing can migrate out of position — often causing damage well beyond the ring itself.
Part Details
| Part Number | 5200021729 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Snap Ring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| APT6S Pump w/Skid | APT6S | 5200018982 |
| APT6T Pump, Surge Brake | APT6T | 5200019646, 5200019647 |
| APT6T Pump, Surge Brake, Cold Weather | APT6T CW | 5200019794, 5200019795 |
| APT6S Pump w/Skid, Cold Weather | APT6S CW | 5200019799 |
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.
