The Wacker Neuson Retaining Ring 40 x 2.5 is a genuine OEM component designed for WPU1550A, WPU1550AW, and MPU 29 series reversible plate compactors. Sourced directly from Wacker Neuson, this retaining ring meets the exact dimensional and material standards of the original part. It fits across multiple WPU1550A and MPU 29 configurations, including US-market variants, making it the straightforward choice when you need a verified replacement. Cross-reference part number against your machine's serial number to confirm the correct fit before ordering.
Key Features
- Exact OEM Dimensions: — Manufactured to the precise 40 x 2.5 mm specification, ensuring the ring seats correctly in its groove without play or misalignment.
- Genuine Wacker Neuson Part: — Sourced directly from Wacker Neuson, this is the same retaining ring installed at the factory — not an approximation.
- Broad Fitment Across WPU and MPU Series: — Compatible with WPU1550A, WPU1550AW, WPU1550A-US, WPU1550AW-US, and MPU 29 / MPU 29A reversible plate compactors.
- Retains Critical Components Under Load: — A correctly fitted retaining ring prevents axial movement of shafts and rotating parts; a worn or missing ring can lead to rapid component failure and unplanned downtime.
- Drop-In Replacement: — Installs directly into the existing groove using standard snap-ring pliers — no machining or adaptation needed.
A retaining ring — also called a snap ring — is a fastening device that clips into a machined groove on a shaft or inside a bore to hold an assembly in its correct axial position. On plate compactors like the WPU1550A and MPU 29 series, retaining rings secure rotating and reciprocating components within the drivetrain and exciter assembly, preventing lateral movement during the high-vibration operation these machines produce. When a retaining ring wears, deforms, or breaks, the component it was holding can shift or separate entirely, causing accelerated wear to adjacent parts and potential mechanical failure that takes the machine out of service.
Part Details
| Part Number | 5000400352 |
|---|---|
| Old Part Number | 0400352 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Retaining Ring 40 x 2.5 |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| WPU1550A | WPU1550A | 5000630033, 5100071592 |
| WPU1550Aw | WPU1550Aw | 5000630034 |
| Reversible Plates | WPU 1550A-L | 5000630124 |
| Reversible Plates | MPU 29 | 5000630141, 5000630228 |
| WPU1550AW-US | WPU1550AW-US | 5100069715 |
| WPU1550Aw | WPU1550AW | 5100071591 |
| Reversible Plates | MPU 29A | 5000630244 |
| WPU1550A-US | WPU1550A-US | 5100069716 |
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.
