The Wacker Neuson Rear Engine Mount Kit is a genuine OEM component designed for the APT6S, APT6T, APT8S, and APT8T series diaphragm pumps, including surge brake, electric brake, and cold weather variants. As a factory-sourced kit, every piece is manufactured to the same tolerances as the original hardware — ensuring the engine sits and isolates exactly as Wacker Neuson intended. Compatibility spans the full APT6 and APT8 pump lineup, covering both skid-mount and trailer-mount configurations. When it comes to a structural mount, using the correct OEM kit is the straightforward call.
Key Features
- Genuine OEM Isolation Integrity — Factory-engineered mount material and durometer rating match the original spec, delivering the vibration damping and load-bearing performance the engine and frame were designed around.
- Complete Kit, Ready to Install — Includes all hardware required for the rear mount position so there is no sourcing individual pieces separately — drop-in replacement for the outgoing assembly.
- Broad APT Series Coverage — Fits APT6S, APT6T, APT8S, and APT8T pumps, including surge brake, electric brake, and cold weather models, across both skid and trailer configurations.
- Structural Stability Under Load — A correctly seated rear engine mount keeps the engine aligned with the pump drive train; a worn or failed mount allows movement that accelerates wear on couplings, mounts, and the frame itself.
- Verified Part Number 5100021659 — Sourced directly from Wacker Neuson, so the part number on the bag matches what the machine calls for — no guesswork on fitment.
The rear engine mount is the structural connection between the engine and the pump frame at the back of the power unit. Its job is twofold: it carries a share of the engine's weight and, through its rubber or elastomeric core, absorbs the vibration and torque pulses the engine produces during operation. When a rear mount degrades — cracking, collapsing, or losing its damping properties — the engine can shift position, putting stress on the drive coupling, vibrating the frame excessively, and accelerating wear on surrounding components. Replacing a failed mount promptly restores proper engine alignment and protects the drivetrain from the secondary damage that misalignment causes.
Part Details
| Part Number | 5100021659 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Rear Engine Mount Kit |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| APT6S Pump w/Skid | APT6S | 5200018982 |
| APT6T Pump, Surge Brake | APT6T | 5200019646, 5200019647 |
| APT6T Pump, Surge Brake, Cold Weather | APT6T CW | 5200019794, 5200019795 |
| APT8S Pump w/Skid | APT8S | 5200018987 |
| APT8T Pump, Surge Brake | APT8T | 5200019648, 5200019649 |
| APT8T Pump, Surge Brake, Cold Weather | APT8T CW | 5200019796, 5200019797 |
| APT6S Pump w/Skid, Cold Weather | APT6S CW | 5200019799 |
| APT8S Pump w/Skid, Cold Weather | APT8S CW | 5200019800 |
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.
