The Wacker Neuson Gerotor Housing Kit is a genuine OEM component designed for the RD12A-90 and RD12-90 series tandem rollers, including foldable ROPS and standard ROPS configurations. As a factory-sourced part, the is manufactured to the exact tolerances required for proper hydraulic system function in these machines. This kit ensures the gerotor assembly seats and seals correctly, maintaining the hydraulic flow characteristics the roller's drive system depends on. If you're servicing an RD12A-90 or RD12-90, this is the correct OEM replacement to restore the hydraulic circuit to proper operating condition.
Key Features
- OEM Hydraulic Precision: — Manufactured to exact internal geometry specs, ensuring the gerotor components deliver consistent hydraulic displacement without internal bypass or pressure loss.
- Direct Housing Replacement: — Designed as a drop-in kit that aligns with existing porting and mounting surfaces, allowing straightforward installation during hydraulic system service.
- Broad RD12 Series Coverage: — Fits multiple RD12A-90 and RD12-90 configurations, including standard ROPS and foldable ROPS variants across confirmed model numbers.
- Sustained Drive Performance: — A worn or damaged gerotor housing causes loss of hydraulic pressure to the drum drive, resulting in sluggish travel, uneven compaction, or complete drive failure. This kit restores full hydraulic output.
- Genuine Wacker Neuson Part: — Sourced directly through the Wacker Neuson OEM parts network, so you receive the correct housing geometry and material specification for this application every time.
The gerotor housing is a core element of the hydraulic motor assembly that drives the drums on a tandem roller. It works by enclosing the gerotor gear set — the inner and outer rotors that create the pumping action — and directing hydraulic fluid through precisely machined inlet and outlet ports. When the housing wears, cracks, or develops internal scoring, the fluid circuit loses efficiency, leading to reduced drum torque, inconsistent travel speed, and increased heat buildup in the hydraulic system. Replacing the housing kit restores the sealed environment the gerotor needs to generate accurate and repeatable hydraulic flow for reliable drum propulsion.
Part Details
| Part Number | 5000183388 |
|---|---|
| Old Part Number | 0183388 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Gerotor Housing Kit |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD12A-90 ROLLER,DBL DRUM,GRN | RD12A-90 | 5000620369, 5000620058, 5000620320 |
| RD12-90 ROLLER, DOUBLE DRUM, SOLID ROPS | RD12-90 | 5000620059, 5000620321 |
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.
Wacker Neuson
Wacker Neuson Part # 5100068687 - Gerotor housing kit - Genuine OEM Part
