The Wacker Neuson Wear Plate is a genuine OEM component designed for the APT4S and APT4T series water pumps, including surge brake, electric brake, and cold weather configurations. As a direct OEM replacement, this wear plate is produced to the same specifications as the original part, ensuring a consistent, accurate fit within the pump assembly. Compatible across the full APT4S and APT4T model range — including standard, skid-mounted, and cold weather variants — this part covers a broad spread of common pump configurations. Keep a spare on hand to minimize unplanned downtime during demanding pump operations.
Key Features
- Genuine OEM Wear Resistance: — Manufactured to Wacker Neuson's original material and hardness specifications, delivering the same service life as the factory-installed wear plate.
- Drop-In Replacement: — Engineered to the original dimensions, this wear plate seats directly into the pump housing without machining or modification to mounting surfaces.
- Broad APT Series Compatibility: — Fits APT4S and APT4T pump models across surge brake, electric brake, and cold weather variants, covering both skid-mounted and standard configurations.
- Protects Pump Efficiency: — A correctly seated wear plate maintains the tight clearances needed for optimal flow and pressure; a worn plate allows bypass, reducing output and accelerating internal wear.
- Verified Part Number: — Sold under Wacker Neuson part number 5200021721, cross-referenced directly against APT4S and APT4T parts documentation for accurate identification.
The wear plate is a hardened contact surface positioned within the pump casing, acting as a sacrificial barrier between the rotating impeller and the pump body. It absorbs the abrasive forces generated during pumping, protecting the more expensive casing and impeller components from direct wear. When the wear plate becomes excessively worn, pump efficiency drops noticeably — output pressure falls, flow rates decrease, and internal components begin to suffer accelerated damage — making timely replacement essential to keeping the pump performing at rated capacity.
Part Details
| Part Number | 5200021721 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Wear Plate |
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.
