The Wacker Neuson Motor Armature is a genuine OEM Motor Armature designed for the APS, WP, and ARS series electric and water pump units, including the APS1030we, APS1135we, APS1340we, APS1550we, APS2050we, WP1550we, WP1550e, and ARS90e. As a direct OEM component sourced from Wacker Neuson, part is manufactured to the same specification as the original, ensuring a correct drop-in fit with no guesswork. This armature serves a broad range of single- and multi-phase pump configurations across the APS and WP families, covering both the standard electric (e) and water-cooled electric (we) variants. When motor performance matters, replacing a worn armature with the correct OEM part keeps the drive system operating at its intended output.
Key Features
- Correct Electrical Output Spec — Wound and balanced to OEM tolerance, ensuring proper electromagnetic performance and consistent motor speed under load.
- Direct Drop-In Replacement — Matches the original shaft dimensions, commutator profile, and winding configuration for a straightforward swap into the motor housing.
- Broad Series Compatibility — Fits APS1030, APS1135, APS1340, APS1550, APS2050, WP1550, and ARS90 pump models across both electric and water-cooled electric variants.
- Sustained Motor Output — A healthy armature maintains full torque and pump flow rate; a worn or shorted armature causes reduced output, overheating, and eventual motor failure.
- Electrical Safety Integrity — As a live rotating electrical component, using the correct OEM armature maintains proper insulation class and winding resistance, reducing risk of short circuit or thermal runaway.
- Genuine OEM Part — Supplied by Wacker Neuson under part number 5100054340, backed by the manufacturer's own quality standards for this component type.
The motor armature is the rotating core of an electric motor — it carries the wound copper coils that interact with the surrounding magnetic field to generate the rotational force that drives the pump. When current passes through the armature windings, the electromagnetic reaction spins the shaft, transferring power directly to the pump impeller. Over time, armature windings can develop shorts, the commutator surface can wear or pit, and the balance can degrade — all of which lead to reduced pumping capacity, excessive heat buildup, increased brush wear, and ultimately motor seizure. Replacing a faulty armature with a correct OEM unit restores full motor efficiency and protects the surrounding motor components from secondary damage.
Part Details
| Part Number | 5100054340 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Motor Armature |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| APS1030we | APS1030we | 5100058917 |
| APS1030e | APS1030e | 5100059660 |
| APS1135we | APS1135we | 5100059661 |
| APS1340we | APS1340we | 5100059663 |
| APS1135e | APS1135e | 5100059664 |
| APS1340e | APS1340e | 5100060128 |
| APS1550e | APS1550e | 5100061219 |
| APS1550we | APS1550we | 5100061220 |
| APS2050e | APS2050e | 5100061221 |
| APS2050we | APS2050we | 5100061222 |
| WP1550e | WP1550e | 5100062425 |
| WP1550we | WP1550we | 5100062426 |
| ARS90e | ARS90e | 5100070501 |
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.
