The Wacker Neuson is a genuine OEM Cylinder with Piston designed for the RD7 and RD15 series tandem rollers and the DPU 4045H, DPU 5045H, DPU 4545HEH, and DPU 5545HEH series reversible vibratory plate compactors. As a direct Wacker Neuson OEM component, the is manufactured to the same specifications as the original part, ensuring proper fit within the engine assembly. This assembly covers a wide range of configurations across both the RD roller family and the diesel-powered DPU reversible plate lineup, making it a versatile service part for fleet operators and dealers. Keep a verified part number on hand to avoid machine downtime on the worksite.
Key Features
- OEM Bore and Compression Integrity — Machined to original cylinder bore tolerances, maintaining correct compression ratio and combustion efficiency for sustained engine output.
- Complete Assembly, Ready to Install — Supplied as a matched Cylinder with Piston unit, eliminating the need to source and pair individual components separately.
- Broad Cross-Family Fitment — Confirmed for RD7H-ES, RD7H-S, RD15 tandem rollers, and multiple DPU 4045H, DPU 5045H, DPU 4545HEH, and DPU 5545HEH reversible vibratory plate configurations.
- Sustained Compaction Force — A correctly seated piston and cylinder maintain the engine power needed to deliver consistent drum vibration on tandem rollers and full compaction force on reversible plates — a worn assembly directly reduces machine output.
- Genuine Wacker Neuson Part — Sourced directly from Wacker Neuson, part number 5000126912 carries full OEM traceability for accurate service records and parts documentation.
The cylinder and piston form the core of the engine's power stroke — the piston travels inside the cylinder bore to compress the air-fuel mixture and convert combustion energy into mechanical power that drives the machine. On tandem rollers like the RD7 and RD15, that power is translated into drum rotation and vibration for asphalt and soil compaction; on DPU reversible plate compactors, it drives the exciter mechanism that delivers compaction force through the plate. When the cylinder bore wears or the piston loses its seal, compression drops, the engine loses power and efficiency, and compaction performance degrades — making timely replacement of the 5000126912 essential to keeping these machines working at full capacity.
Part Details
| Part Number | 5000126912 |
|---|---|
| Old Part Number | 0126912 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Cylinder with Piston |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD 7ES | RD7H-ES EU | 5000620794 |
| RD7H-ES Tandem Roller | RD7H-ES | 5000009408 |
| RD7H-S ROLLER,DOUBLE DRUM | RD7H-S | 5000009487 |
| RD 7S | RD7H-S EU | 5000620795 |
| Double Drum Vibratory Roller | RD7H | 5000008042 |
| Reversible Vibratory Plate, 50 kN, 45cm/18in | DPU 5045H | 5000007862, 5000007936, 5000007965, 5000610045, 5000610046, 5000610047, 5000610052 |
| Reversible Vibratory Plate, 50 kN, 45cm/18in | DPU 4045H | 5000007888, 5000007935, 5000610043, 5000610044, 5000610051, 5000610064 |
| Hydrostatic Double Drum Vibrat ory Roller | RD15 | 5000008057, 5000009316 |
| DPU5545HEH US | DPU5545Heh US | 5100009653 |
| DPU4545HEH US | DPU4545Heh US | 5100009660 |
| DPU5545HECH US | DPU5545Hech US | 5100016948 |
| DPU4545HECH US | DPU4545Hech US | 5100016952 |
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.
