The Wacker Neuson Sleeve is a genuine OEM component designed for the IREN 57 ST1, IREN 57 ST4, and PIR 55 series internal concrete vibrators. Sourced directly from Wacker Neuson, this sleeve matches the exact dimensions and material specifications of the original part. It is confirmed to fit across both electric and pneumatic internal vibrator configurations in the IREN and PIR families, making it a straightforward service replacement for contractors and concrete crews.
Key Features
- Genuine OEM Dimensional Accuracy — Manufactured to Wacker Neuson's original tolerances, ensuring the sleeve seats correctly within the vibrator head assembly without gaps or misalignment that could affect vibration transfer.
- Direct Service Replacement — Drops into place on IREN 57 ST1 and IREN 57 ST4 electric internal vibrators as well as PIR 55 pneumatic internal vibrators, covering multiple units with a single part number.
- Broad IREN and PIR Family Fitment — Confirmed compatibility across the IREN 57 ST1, IREN 57 ST4, and PIR 55 series, giving fleet operators a single stocking solution for mixed internal vibrator lineups.
- Supports Consistent Vibration Output — A worn or damaged sleeve can disrupt the eccentric motion of the vibrator head, leading to uneven concrete consolidation. Replacing it restores the full vibration amplitude the machine is rated to deliver.
- Genuine Part Assurance — As an authentic Wacker Neuson OEM part, 5000129444 meets the same production standards as the sleeve originally installed at the factory, giving you confidence in the repair.
The sleeve in an internal concrete vibrator surrounds and supports the internal working components of the vibrator head, helping to contain and direct the eccentric motion that consolidates fresh concrete. It acts as a protective and structural layer between the vibrating element and the outer shell of the head. When the sleeve becomes worn, cracked, or damaged, vibration efficiency drops off and the head assembly can become noisy or erratic — leaving air pockets in the pour that compromise slab strength and finish quality.
Part Details
| Part Number | 5000129444 |
|---|---|
| Old Part Number | 0129444 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Sleeve |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| IREN 57 ST1 | IREN 57 ST1 | 5000008903 |
| Internal Vib. IREN 57 ST4 | IREN 57 ST4 | 5000008905 |
| Ø 55 mm, PneumaticInternal Vib rator | PIR 55 | 5000006417, 5000006418 |
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.
