The Bomag 05728785 Cylinder and Piston is a genuine OEM component designed for the BMP 851 trench compactor. Sourced directly from Bomag, this cylinder and piston assembly meets the original engineering specifications for the BMP 851, ensuring a direct, correct-fit installation without improvisation or modification. When compression drops or the engine loses power due to cylinder or piston wear, this OEM assembly restores the machine to its intended operating condition.
Key Features
- OEM Compression Integrity — Genuine Bomag manufacture ensures the cylinder bore diameter and piston tolerances match the original engine spec, preserving combustion efficiency and power output.
- Direct Assembly Replacement — Supplied as a matched cylinder and piston set, this component installs into the BMP 851 engine using the original mounting configuration with no adaptation required.
- Confirmed BMP 851 Fitment — Verified for Bomag BMP 851 trench compactors; always cross-reference part number 05728785 against your machine's serial number before ordering.
- Restored Engine Performance — A worn or scored cylinder wall causes loss of compression, hard starting, and reduced compaction force; replacing this assembly brings combustion back to full strength.
- Fuel System Safety Compliance — An OEM-matched piston-to-cylinder clearance prevents blow-by and unburned fuel from contaminating the crankcase, protecting downstream engine components.
The cylinder and piston are the core of the engine's power-generating cycle — the piston travels up and down inside the cylinder bore, compressing the air-fuel mixture and converting combustion energy into the mechanical force that drives the BMP 851's compaction system. Over time, heat and friction cause the cylinder bore to wear and the piston rings to lose their seal, resulting in reduced compression, increased oil consumption, and sluggish performance. Replacing the cylinder and piston assembly as a matched unit restores the original compression ratio and keeps the engine running at the output level the machine was built to deliver.
Part Details
| Part Number | 05728785 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Cylinder and Piston |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Trench Compactor | BMP 851 | 00815200, 00817959 |
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.
