The Wacker Neuson Block Contact is a genuine OEM component designed for the RD27-100 and RD27-120 series hydrostatic vibratory rollers, including standard and traction control configurations. As a direct OEM replacement, part is produced to the same specifications as the original, ensuring a correct drop-in fit within the machine's electrical control circuit. This Block Contact is compatible across multiple machine numbers in the RD27-100 and RD27-120 families, making it the reliable choice when restoring proper electrical switching function to your roller.
Key Features
- Genuine OEM Contact Integrity — Manufactured to original electrical specification, ensuring correct contact resistance and switching performance for the RD27 control system.
- Direct-Fit Replacement — Engineered to seat into the existing contact block position on RD27-100 and RD27-120 rollers without adaptation or modification to the mounting.
- Broad RD27 Series Coverage — Fits standard and traction control variants of both the RD27-100 and RD27-120 hydrostatic vibratory rollers across multiple machine configurations.
- Restores Reliable Switching Function — A worn or degraded contact block can cause intermittent or failed electrical switching; replacing it with 5000171971 restores consistent, responsive control circuit operation.
- Electrical Safety Compliance — Using the correct OEM contact block maintains the integrity of the roller's control circuitry, reducing the risk of unintended switching behavior or control failures during operation.
A block contact is an electrical switching component that opens or closes a circuit in response to an operator input or control signal. On hydrostatic vibratory rollers like the RD27 series, these contacts form part of the machine's control and safety circuitry, governing functions such as drive engagement, vibration activation, or safety interlocks. When a block contact wears out or fails, the affected circuit may become unresponsive, intermittent, or fail to switch entirely — leading to loss of control function and potential safety concerns. Replacing it promptly with the correct OEM part restores full electrical continuity and keeps the machine operating as intended.
Part Details
| Part Number | 5000171971 |
|---|---|
| Old Part Number | 0171971 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Block Contact |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Hydrostatic Vibratory Roller | RD27-100 | 5000620393, 5000620508, 5000620510, 5000620512, 5000620395, 5200009322 |
| Hydrostatic Vibratory Roller | RD27-120 | 5000620394, 5000620509, 5000620511, 5000620513, 5000620396, 5200009323 |
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.
