The Wacker Neuson Diesel Engine 1D90E is a genuine OEM powerplant designed for DPU6555Heh and DPU6555Hech series reversible plate compactors. As a direct OEM replacement, the is manufactured to the same specifications as the original unit installed at the factory, ensuring a seamless swap without guesswork. This engine assembly is the correct fit for both the DPU6555Heh US and DPU6555Hech US configurations, giving you confidence that you are ordering the right part the first time.
Key Features
- Genuine OEM Engine Assembly — Built by Wacker Neuson to the same output and displacement spec as the original 1D90E, so combustion performance and torque characteristics match what left the factory.
- Direct Drop-In Replacement — Mounting points, fuel connections, and PTO interface align with the existing engine bay on DPU6555 series plates, supporting a straightforward engine swap.
- Confirmed Fitment for DPU6555 Series — Verified for DPU6555Heh US and DPU6555Hech US reversible plate compactors, covering both hydrostatic drive variants in the lineup.
- Full Power Restoration — A correctly functioning 1D90E delivers the consistent RPM and torque needed to drive the exciter mechanism at rated compaction force — a worn or seized engine directly reduces compaction output and productivity.
- Fuel System Integrity — As a diesel engine assembly, this unit includes matched internal fuel and lubrication pathways; using the genuine OEM part maintains safe fuel containment and proper oil circulation from the first start-up.
The 1D90E is a single-cylinder, air-cooled diesel engine that serves as the sole power source for the DPU6555 series reversible plate compactor. It drives the hydraulic exciter system that generates the compaction force transmitted through the plate, meaning engine condition directly determines how effectively the machine densifies soil, gravel, or asphalt. When this engine loses power, fails to start, or develops internal wear, compaction performance degrades immediately — replacing it with the correct OEM unit restores the machine to its rated operating capacity.
Part Details
| Part Number | 5100077337 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Diesel Engine 1D90E |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| DPU6555Heh US | DPU6555Heh US | 5100058447 |
| DPU6555Hech US | DPU6555Hech US | 5100062487 |
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