The Wacker Neuson is a genuine OEM Key 3/16 X 1 designed for a wide range of Wacker Neuson diaphragm trash pumps, ride-on concrete trowels, and vibratory truss screeds. As a direct factory replacement, delivers the exact dimensions and material grade required to maintain proper shaft-to-component engagement across all covered equipment families. Fitment spans PDT2, PDT2A, PDT2B, PDT3, and PDT3A diaphragm trash pump series, PDI2A, PDI2, PDI3A, and PDI3 inline diaphragm trash pump series, CRT36ASO and CRT36ASN ride-on trowel models, the CRT46ASO ride-on trowel, and SP75 and SP50 vibratory truss screed power sections. Sourcing a genuine Wacker Neuson part means the meets the same specification as the key installed at the factory, helping you restore full machine function without guesswork.
Key Features
- Correct Dimensional Tolerancing — Manufactured to OEM specification for the 3/16 X 1 profile, ensuring the key seats fully in the keyway without play or binding.
- Genuine Wacker Neuson OEM Part — Sourced directly from Wacker Neuson; identical metallurgy and hardness to the original component for lasting shaft retention.
- Broad Cross-Family Fitment — Covers PDT, PDT-A, PDT-B, PDI, PDI-A, and PDI-3 diaphragm trash pump series, CRT36 and CRT46 ride-on trowels, and SP50/SP75 truss screed power sections under a single part number.
- Positive Drive Transmission — A correctly sized key locks rotating components to the shaft, preventing slip that would otherwise cause power loss, accelerated wear, or component failure.
- Drop-In Replacement — Matches the original keyway geometry on covered models, allowing straightforward installation during routine shaft, impeller, or drive component service.
A woodruff or square drive key is a small but critical component that locks a rotating element — such as an impeller, pulley, or drive hub — to its shaft, ensuring the two turn together as one unit. Without a properly seated key, torque cannot transfer reliably, causing the driven component to slip or spin freely on the shaft and rendering the machine unable to pump, trowel, or screed effectively. When a key shears, deforms, or works loose through vibration or overload, the only reliable repair is replacement with a part that matches the original profile exactly — making dimensional accuracy the single most important attribute of this part.
Part Details
| Part Number | 5000087918 |
|---|---|
| Old Part Number | 0087918 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Key 3/16 X 1 |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| 50mm/2in Diaphragm Trash Pump | PDT2A | 5000007610, 5000007611 |
| 75mm/3in Diaphragm Trash Pump | PDT3A | 5000007614, 5000007615, 5000007616 |
| 50mm/2in Inline Diaphragm Tras h Pump | PDI2A | 5000007624, 5000007625 |
| 75mm/3in Inline Diaphragm Tras h Pump | PDI3A | 5000007628, 5000007629, 5000009407 |
| 50mm/2in Diaphragm Trash Pump | PDT2 | 5000009494, 5000007633 |
| 75mm/3in Diaphragm Trash Pumps | PDT3 | 5000009495, 5000007619 |
| 915mm/36in Ride-On Trowel, ove rlapping | CRT36ASO | 5000007512 |
| 915mm/36in Ride-On Trowel, non #NAME? | CRT36ASN | 5000007513 |
| CRT46ASO | CRT46ASO | 5000007514 |
| 50mm/2in Diaphragm Trash Pump | PDI2 | 5000009489 |
| 50mm/2in Diaphragm Trash Pump | PDT2B | 5000007612, 5000007613 |
| Vibratory Truss Screed, Power Section | SP75 | 5000008295 |
| Vibratory Truss Screed, Power Section | SP50 | 5000008296 |
| 75mm/3in Diaphragm Trash Pump | PDI3 | 5000009491, 5000009492 |
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.
