The Wacker Neuson 5200021009 Bolt is a genuine OEM fastener designed for APT4T and APT4S series self-priming pumps. As a direct factory replacement, this bolt is sourced from Wacker Neuson's authorized parts supply and meets the same specifications as the original hardware installed at the factory. Fitment covers multiple configurations including the APT4T Pump with Surge Brake, APT4T Pump with Electric Brake, APT4S Pump with Skid, and their respective Cold Weather variants. When it comes to structural fasteners in pump assemblies, using the correct OEM part ensures proper torque retention and long-term mechanical integrity.
Key Features
- Genuine OEM Hardware Grade — Manufactured to Wacker Neuson's exact material and thread specification, ensuring the bolt engages correctly with mating components in the pump assembly without risk of cross-threading or premature loosening.
- Drop-In Replacement — Installs directly in place of the original fastener with no rework to mounting points or adjacent hardware required.
- Broad APT4T and APT4S Fitment — Compatible across APT4T Surge Brake, APT4T Electric Brake, APT4S with Skid, and all corresponding Cold Weather variants, making it a versatile stock item for fleets running multiple pump configurations.
- Structural Integrity Under Load — A properly torqued OEM bolt maintains clamping force through the vibration and pressure cycles typical of continuous pump operation; a worn or mismatched bolt can allow joint movement that leads to leaks or component damage.
- Verified Part Number — Part number 5200021009 confirmed against Wacker Neuson's official parts documentation for the models listed, giving you confidence before you order.
Bolts in pump assemblies serve as the primary fasteners holding covers, flanges, brackets, and structural joints together under operational load. In a self-priming pump like the APT4T or APT4S, these fasteners must withstand constant vibration as well as the mechanical stress generated during priming cycles and sustained fluid transfer. When a bolt stretches, strips, or fails, the resulting joint movement can compromise seals, cause misalignment of mating surfaces, or allow fluid intrusion into areas of the assembly that are not designed to handle it. Replacing a damaged or missing bolt with the correct OEM-spec part restores full clamping force and protects the surrounding components.
Part Details
| Part Number | 5200021009 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Bolt |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| APT4T Pump, Surge Brake, Cold Weather | APT4T CW | 5200019792, 5200019793 |
| APT4T Pump, Electric Brake | APT4T | 5200019644, 5200019643 |
| APT4S Pump w/Skid, Cold Weather | APT4S CW | 5200019798 |
| APT4S Pump w/Skid | APT4S | 5200018977 |
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.
