The Wacker Neuson Spark Plug Terminal Cap is a genuine OEM component designed for a wide range of Wacker Neuson walk-behind trowels, vibratory plates, trash pumps, and power screeds. Sourced directly from Wacker Neuson, this part matches the original specification installed at the factory, ensuring a correct connection between the ignition lead and the spark plug. Compatible models include the CT36 and CT48 walk-behind trowel series, BPU 3050A, BPU 3750Ats, BPU 4045A, BPS 2550A, PT3A trash pumps, HPG50A, HPG100A, and MPU 29A reversible plates, among others.
Key Features
- Correct Terminal Contact: — Engineered to OEM specification, this cap delivers a secure, vibration-resistant connection at the plug terminal — critical for consistent spark delivery under demanding site conditions.
- Direct-Fit Replacement: — Designed to clip directly onto the spark plug boot and ignition lead of compatible Wacker Neuson engines with no trimming or adaptation.
- Broad Model Coverage: — A single part number covering CT36 and CT48 trowel families, BPU and BPS vibratory plate series, PT3A trash pumps, HPG screed power sections, and HPG50A/HPG100A units.
- Ignition System Integrity: — A worn or cracked terminal cap allows moisture ingress and causes voltage leak, leading to misfires, hard starting, and rough running — replacing it restores clean ignition performance.
- Genuine OEM Part: — Supplied as an authentic Wacker Neuson component, part number 5100049522, so you know the material grade, geometry, and retention force match what left the factory.
The spark plug terminal cap connects the high-voltage ignition lead to the top of the spark plug, forming the final link in the ignition circuit. It seals the connection against moisture and contamination while transmitting the electrical pulse needed to fire the plug cleanly on every stroke. When the cap cracks, corrodes, or loses its retention grip, the result is an unreliable spark — causing hard starts, misfires, or a complete no-start condition that halts the machine on the job.
Part Details
| Part Number | 5100049522 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Spark Plug Terminal Cap |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| 915mm/36in CE Walk-behind Trow el | CT36AGP | 5000007596, 5000007595 |
| 915mm/36in CE Walk-behind Trow el | CT36AGP-E | 5000008036, 5000008026 |
| 1220mm/48in Walk-behind Trowel | CT48ADP | 5000007598, 5000007599, 5000008199 |
| 1220mm/48in CE Walk-behind Tro wel | CT48ADP-E | 5000008027, 5000008028 |
| 915mm/36in CE Walk-behind Trow el | CT36AGT-E | 5000007594, 5000008012 |
| 1220mm/48in CE Walk-behind Tro wel | CT48ADT-E | 5000007597, 5000008016 |
| 915mm/36in CE Walk-behind Trow el | CT36AGT | 5000008014, 5000008011 |
| 1220mm/48in Walk-behind Trowel | CT48ADT | 5000008015, 5000008040 |
| BPU 3050A | BPU 3050A | 5000008763 |
| 915mm/36in Variable Speed Walk #NAME? | CT36AVP | 5000009235, 5000009236 |
| HPG100A | HPG100A | 5000009507 |
| BPU 3050A US | BPU 3050A US | 5000610361 |
| 75mm/3in Centrifugal Trash Pum p | PT3A | 5000006729, 5000006730, 5100058535, 5100058536 |
| 915mm/36in Variable Speed Walk #NAME? | CT36AVT | 5000009233, 5000009234 |
| Single Direction Vibratory Pla te, 25kN, 50cm/20in | BPS 2550A | 5000007528 |
| HPG50A | HPG50A | 5000009509 |
| BPU 3750Ats | BPU 3750Ats | 5000610408 |
| BPU3750Ats | BPU 3750Ats US | 5000610423 |
| BPU 4045A US | BPU 4045A US | 5100009663 |
| Reversible Plates | MPU 29A | 5000630244 |
| Vibratory Truss Screed, Power Section | HPG100 | 5000008293 |
| Vibratory Truss Screed, Power Section | HPG50 | 5000008294 |
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.
