The Wacker Neuson Engine Hatz 1D42S Es is a genuine OEM engine assembly designed for the RD7H-ES series tandem rollers, including the RD 7ES and RD7H-ES models. Sourced directly from Wacker Neuson, part carries the exact specifications the machine was built around, ensuring a proper drop-in replacement with no guesswork on compatibility. If you're servicing an RD7H-ES roller and need a confirmed OEM powerplant, this is the correct part.
Key Features
- OEM-Matched Power Output — Genuine Hatz 1D42S engine assembly built to the precise displacement and output ratings specified for the RD7H-ES platform, so your roller delivers consistent compaction force from day one.
- Direct-Mount Fitment — Engine mounts, shaft interface, and ancillary connection points align directly with the RD7H-ES frame and drivetrain, supporting a straightforward swap without custom adaptation.
- Verified RD7H-ES Compatibility — Confirmed fitment across the RD 7ES and RD7H-ES tandem roller configurations, covering both machine numbers in the RD7H-ES product family.
- Sustained Compaction Performance — A correctly functioning Hatz 1D42S keeps drum vibration and travel drive operating at rated capacity; a worn or seized engine leads to lost compaction output and costly site delays.
- Fuel System Integrity — As the primary fuel-burning assembly, using a genuine OEM unit ensures fuel delivery, combustion, and exhaust pathways meet the original emissions and safety calibration for this machine class.
The Hatz 1D42S is a single-cylinder, air-cooled diesel engine commonly used to power compact construction equipment where a robust, low-maintenance powerplant is required in a small footprint. In a tandem roller like the RD7H-ES, the engine drives both the vibratory drum system and the hydrostatic travel circuit, meaning its condition directly governs compaction quality and machine mobility. When the engine loses power, runs rough, or fails entirely, the roller cannot maintain consistent drum frequency or forward motion — making a like-for-like engine replacement the only path back to full productivity.
Part Details
| Part Number | 5000181243 |
|---|---|
| Old Part Number | 0181243 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Engine Hatz 1D42S Es |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD 7ES | RD7H-ES EU | 5000620794 |
| RD7H-ES Tandem Roller | RD7H-ES | 5000009408 |
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.
