The Wacker Neuson Spring is a genuine OEM component designed for a wide range of Wacker Neuson equipment, including CT36 and CT48 walk-behind concrete power trowels, VP and WP single-direction vibratory plate compactors, PT2 and PT3 centrifugal trash pumps, PDT and PDI diaphragm pumps, PG2 and PG3 dewatering pumps, and BFS floor saws. Sourced directly from Wacker Neuson, this spring matches the original part in material grade, tension, and dimensional spec — ensuring it seats and functions exactly as designed. It covers an extensive fitment list across multiple machine families, making it a practical stock item for dealers and service fleets running mixed Wacker Neuson equipment.
Key Features
- Genuine OEM Spring Tension Match — Manufactured to the exact load and deflection characteristics of the original, so spring-actuated mechanisms engage and release with the correct force every time.
- Direct Drop-In Replacement — Dimensionally identical to the factory part; installs into the original mounting points on trowels, vibratory plates, pumps, and floor saws without alteration.
- Broad Cross-Family Fitment — A single part number covering CT36 and CT48 trowels, VP1340/VP1550/VP2050 and WP1540/WP1550/WP2050 plate compactors, PT2/PT3 and PDT/PDI/PG pump families, and BFS floor saw models.
- Consistent Mechanism Response — A correctly rated spring maintains proper tension in throttle linkages, valve assemblies, or retention systems; a fatigued or broken spring causes erratic operation, slippage, or mechanism failure.
- Fuel and Valve System Relevance — Where used in fuel or pump valve circuits, the correct spring load is critical to maintaining proper flow control and preventing unintended valve behavior under operating pressure.
A spring is a fundamental tensioning or return element used throughout small-engine and pump-driven equipment. Depending on its location — throttle linkage, valve seat, pump diaphragm retainer, or mechanical latch — it provides the restoring force that keeps a moving component in its correct rest position and ensures consistent actuation. When a spring fatigues, takes a set, or breaks, the mechanism it governs loses calibrated response: throttles may stick or fail to return to idle, valves may not seal fully, or retention clips may disengage under vibration. Replacing a worn spring promptly restores the precise mechanical behavior the system was engineered around.
Part Details
| Part Number | 5000156521 |
|---|---|
| Old Part Number | 0156521 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Spring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| CT36-9-V Trowel | CT36-9-V | 5000009447, 5000620834 |
| CT36-9 Trowel | CT36-9 | 5000009444, 5000620833 |
| PT2 Pump | PT2 | 5000009318, 5000009319, 5000009320 |
| CT48-9 Trowel | CT48-9 | 5000009453, 5000620838 |
| CT36-6 Trowel | CT36-6 | 5000009443, 5000620830 |
| PT3 Pump | PT3 | 5000009321, 5000009322, 5000009323 |
| 50mm/2in Diaphragm Trash Pump | PDT2 | 5000009494, 5000620770 |
| 75mm/3in Diaphragm Trash Pumps | PDT3 | 5000009495, 5000620774 |
| PG2 Dewatering Pump | PG2 | 5000009496, 5000009497 |
| PG3 Dewatering Pump | PG3 | 5000009498, 5000009499 |
| VP1340W VIBROPLATE | VP1340W | 5000008706, 5000630051 |
| VP1550W VIBROPLATE | VP1550W | 5000008708, 5000630013, 5000630053 |
| VP1340 Single Direction Vibratory Plate | VP1340 | 5000008705, 5000630050 |
| VP1550 VIBROPLATE | VP1550 | 5000008707, 5000630052 |
| WP1540W VIBROPLATE | WP1540W | 5000009326, 5000630018, 5000009547, 5000630066 |
| WP1550W VIBROPLATE | WP1550W | 5000009324, 5000009548, 5000630020, 5000630064 |
| WP1550 VIBROPLATE | WP1550 | 5000009325, 5000630065 |
| WP1540 VIBROPLATE | WP1540 | 5000009327, 5000630067 |
| Value Vibratory Plate | VP2050I | 5000009541 |
| WP 2050W | WP2050W | 5000630023 |
| WPP 1540W | WPP1540W | 5000630027 |
| WPP 1550W | WPP1550W | 5000630031 |
| WPP 1550Ww | WPP1550Ww | 5000630032 |
| WPP 1540Ww | WPP1540Ww | 5000630028 |
| Basic floor saw, ø 450mm/18in | BFS 1345B | 5000008909, 5000610142 |
| BFS 935 SAW,BASIC | BFS 935B | 5000008911 |
| VP2050W VIBROPLATE | VP2050W | 5000009537 |
| 500mm/50in, 20kN Value Vibrato ry Plate | VP2050 | 5000009530 |
| Single Direction Plates | VP1340W-L | 5000630001 |
| Single Direction Plates | VP1340W-LL | 5000630002 |
| Single Direction Plates | VP1340W-LF | 5000630003 |
| Single Direction Plate | WP1550Ww | 5000630113 |
| Single Direction Plate | WP2050Ww | 5000630116 |
| VP1340W VIBROPLATE, W/WHEEL KIT | VP1340W w/WH | 5000630121 |
| BFS 914B SAW | BFS 914B | 5000610093 |
| Single Direction Plate | WP1540Ww | 5000630111 |
| Petrol Floor Saw BFS 1350L | BFS 1350L | 5000008936 |
| Gas Reversible Vibratory Plate ,25 kN,40cm/16in | BPU 2540 | 5000008954 |
| Petrol Floor Saw BFS 940W | BFS 940W | 5000610328, 5100004005 |
| 50mm/2in Diaphragm Trash Pump | PDI2 | 5000009489 |
| Floor Saws | BFS 614B | 5000009526 |
| BFS 1345 SAW,BZ | BFS 1345BZ | 5000610243 |
| 75mm/3in Diaphragm Trash Pump | PDI3 | 5000009491, 5000009492 |
| Floor Saw | BFS 914W | 5100004003 |
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.
