The Wacker Neuson Spark Plug Cap is a genuine OEM component designed for a wide range of Wacker Neuson vibratory plates, truss screeds, and internal vibrators, including the WP1540A, WP1550A, VP1340A, VP1550A, VP2050A, BPU2540A, and BT series. As a factory-sourced part, the is manufactured to the exact tolerances and materials specified for these machines, ensuring a direct connection to the spark plug terminal with no guesswork. This Spark Plug Cap fits an extensive lineup of WP, VP, WPU, HP, HPG, and PT series equipment, making it a versatile stocking part for fleets running multiple Wacker Neuson models.
Key Features
- OEM Ignition Contact Integrity — Manufactured to Wacker Neuson's original specification, this cap maintains the correct terminal contact tension and insulation grade needed for consistent spark delivery on small-displacement gasoline engines.
- Direct Terminal Fit — Engineered to seat firmly onto the spark plug boot connection used across WP, VP, WPU, HP, HPG, BPU, PT, and BT series machines, snapping securely into place without any modification to the ignition lead.
- Broad Wacker Neuson Fitment — Covers the WP1540A, WP1550A, VP1340A, VP1550A, VP2050A, BPU2540A, HP50A, HP100A, HPG50A, HPG100A, PT2A, BT24A, BT36A, and additional WPU series models in both US and international configurations.
- Protects Against Ignition Misfires — A cracked or loose spark plug cap allows voltage to arc incorrectly, causing hard starts, rough running, or complete ignition failure. Replacing with the correct OEM cap restores clean spark transfer and consistent engine starting.
- Electrical Safety Under Vibration — Vibratory compaction equipment operates under continuous high-frequency vibration; the OEM cap is rated to maintain a secure, insulated connection under these conditions, preventing unintended voltage exposure at the plug terminal.
The spark plug cap fits over the top of the spark plug and connects the high-voltage ignition lead to the plug terminal, completing the circuit that fires the engine's combustion cycle. It provides both the electrical connection and the insulation needed to contain the ignition voltage and direct it precisely to the plug. When a spark plug cap cracks, loosens, or deteriorates, voltage can leak before it reaches the plug, resulting in misfires, difficulty starting, or an engine that won't run at all — issues that are easy to overlook but quick to fix with the correct replacement cap.
Part Details
| Part Number | 5100051859 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Spark Plug Cap |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Vibratory Plate, 15kN, 400mm/1 5.5in | WP1540AW | 5000008060, 5000009545, 5000009472, 5000630045 |
| Vibratory Plate, 15 kN, 500mm/ 19.5in | WP1550AW | 5000007576, 5000009546, 5000630043, 5000009486 |
| WP1540A VIBROPLATE | WP1540A | 5000008061, 5000630046, 5100018330 |
| WP1550A Single Direction Vibratory Plate | WP1550A | 5000007579, 5000630044, 5100018323 |
| BPU2540A | BPU 2540A | 5000008758 |
| HP50A | HP50A | 5000009508 |
| BPU 2540A US | BPU 2540A US | 5000610360 |
| Vibratory Truss Screed, Power Section | HP100A | 5000009506 |
| HPG50A | HPG50A | 5000009509 |
| VP1550AW/WH | VP1550AW/WH | 5000630373 |
| WP1540Aw | WP1540Aw US | 5100018327 |
| WP1540Aw | WP1540Aw | 5100018329 |
| VP1340AW/WH | VP1340AW/WH | 5000630374 |
| WP1550Aw | WP1550Aw | 5100016241 |
| WP1550Aw | WP1550Aw US | 5100018324 |
| WP1540A | WP1540A US | 5100018328 |
| WPU1550AW-US | WPU1550AW-US | 5100069715 |
| WPU1550Aw | WPU1550AW | 5100071591 |
| A5000/160 ISO | A5000/160 ISO | 5000610325 |
| A5000/160 ANSI | A5000/160 ANSI | 5000610340 |
| WP1550A | WP1550A US | 5100018325 |
| VP2050Aw | VP2050Aw US | 5100029050 |
| VP2050A | VP2050A US | 5100029051 |
| VP2050Aw | VP2050Aw | 5100029052 |
| VP2050A | VP2050A | 5100029053 |
| VP1550Aw | VP1550Aw US | 5100029054 |
| VP1550A | VP1550A US | 5100029055 |
| VP1550Aw | VP1550Aw | 5100029056 |
| VP1550A | VP1550A | 5100029057 |
| VP1340Aw | VP1340Aw US | 5100029058 |
| VP1340A | VP1340A US | 5100029059 |
| VP1340Aw | VP1340Aw | 5100029060 |
| VP1140A | VP1340A | 5100029061 |
| VP1340Aw | VP1340Aw Loxam | 5100029062 |
| WPU1550A-US | WPU1550A-US | 5100069716 |
| WPU1550A | WPU1550A | 5100071592 |
| PT2A | PT2A | 5100058524, 5100058525 |
| HPG100A | HPG100A | 5000009507 |
| Modular Internal Vibrators | D3.5A3 | 5100072402 |
| Modular Internal Vibrators | D3.5A2 | 5100072405 |
| BT24A | BT24A | 5100081469 |
| BT36A | BT36A | 5100081470 |
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.
