The Wacker Neuson Spring Washer is a genuine OEM Spring Washer designed for the APT4S and APT4T pump series, including surge brake, electric brake, and cold weather configurations. As a factory-sourced component, the is manufactured to the same standards as the original part it replaces, ensuring a direct, hassle-free installation. This Spring Washer fits across the full APT4 pump lineup, covering both standard and cold weather variants with skid and brake options.
Key Features
- Genuine OEM Spring Tension Integrity — Manufactured to exact load and deflection specifications for this washer application, maintaining proper clamping force across pump hardware joints.
- Drop-In Hardware Replacement — Matches the original washer profile and inner diameter for direct installation without rework or custom fitting.
- Broad APT4 Pump Coverage — Compatible with APT4S and APT4T pump models, including surge brake, electric brake, and cold weather variants.
- Consistent Fastener Load Distribution — A correctly functioning spring washer prevents fastener loosening under vibration and operational load, keeping pump assemblies secure during use.
- Sourced Direct from Wacker Neuson — Part number 5200020015 is an authorized OEM part, ensuring correct material grade and dimensional accuracy for long service life.
A spring washer is a small but critical hardware component that sits beneath a bolt or nut to maintain tension and resist loosening caused by vibration and thermal cycling. In pump assemblies like the APT4S and APT4T, where equipment regularly operates under sustained mechanical stress, a spring washer keeps fastened connections secure and prevents movement that can lead to leaks or component damage. When a spring washer loses its tension or deforms, fasteners can back out over time, compromising the integrity of the assembly and leading to more significant repair needs.
Part Details
| Part Number | 5200020015 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Spring Washer |
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.
