The Wacker Neuson Snap Ring is a genuine OEM component designed for the APT4S and APT4T pump series, including standard, cold weather, surge brake, and electric brake configurations. As a factory-sourced part, it is manufactured to the same specifications as the original, ensuring a correct fit within the pump assembly. This snap ring covers a broad range of APT4 variants, making it the right choice whether you are servicing a skid-mounted APT4S or a cold weather APT4T with electric brakes.
Key Features
- Genuine OEM Retention Integrity — Manufactured by Wacker Neuson to maintain the exact dimensional profile required for secure component retention within the pump assembly.
- Drop-In Replacement — Seats directly into the original groove without rework, keeping reassembly straightforward during pump service.
- Broad APT4 Series Coverage — Compatible with APT4S and APT4T pumps across standard, surge brake, electric brake, and cold weather variants.
- Structural Reliability Under Load — A correctly installed snap ring holds internal pump components in position under operating pressure; a worn or missing ring can allow axial movement that leads to accelerated wear or component failure.
- Verified Part Number — Part number 5200021712 is sourced directly from Wacker Neuson, eliminating guesswork when cross-referencing against your pump's service diagram.
A snap ring is a fastening device that fits into a machined groove on a shaft or inside a bore to retain a component in its correct axial position. In pump assemblies like the APT4S and APT4T, snap rings prevent internal parts from shifting under the vibration and pressure generated during operation. When a snap ring becomes deformed, corroded, or loses its spring tension, the component it retains can migrate out of position, causing premature wear, increased clearances, or outright mechanical failure within the pump.
Part Details
| Part Number | 5200021712 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Snap Ring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| APT4S Pump w/Skid | APT4S | 5200018977 |
| APT4T Pump, Surge Brake | APT4T | 5200019643, 5200019644 |
| APT4T Pump, Surge Brake, Cold Weather | APT4T CW | 5200019792, 5200019793 |
| APT4S Pump w/Skid, Cold Weather | APT4S CW | 5200019798 |
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.
