The Bomag 05728400 Piston is a genuine OEM component designed for BPR 40/45 D, BPR 40/45 D-2, and BPR 40/45 D-3 reversible vibratory plates. Sourced directly from Bomag, this piston is manufactured to the exact dimensions and material specifications of the original part, ensuring a correct drop-in fit within the engine assembly. This piston is confirmed compatible across all three generations of the BPR 40/45 D reversible vibratory plate, giving you confidence in ordering the right component the first time.
Key Features
- OEM Dimensional Accuracy — cast and machined to the exact bore diameter, ring groove depth, and pin clearance specified for the BPR 40/45 D engine, ensuring proper compression and sealing from the first start
- Direct Engine Replacement — installs into the cylinder bore using the original pin and rings with no rework or modification to the engine block
- Multi-Generation Fitment — confirmed for BPR 40/45 D, BPR 40/45 D-2, and BPR 40/45 D-3 reversible vibratory plates, covering the full production run of this model family
- Compression Integrity — a correctly fitted piston maintains the combustion pressure needed to drive consistent vibratory output; a worn or cracked piston causes power loss, hard starting, and excessive oil consumption
- Genuine Bomag Part — supplied as an authentic OEM component under part number 05728400, backed by Bomag's manufacturing standards for materials and tolerances
The piston is the reciprocating heart of the engine, converting combustion pressure into the crankshaft rotation that ultimately powers the exciter mechanism and generates the plate's compaction force. It must seal precisely against the cylinder wall to maintain compression and control oil consumption — tasks that depend on correct ring groove geometry and a defect-free crown. When a piston wears, scores, or cracks, the engine loses compression, runs rough, burns oil, and can no longer deliver the sustained vibratory energy needed for effective soil and asphalt compaction. Replacing it with a genuine OEM piston restores the engine to its original operating condition and protects the surrounding components from damage caused by blow-by gases and metal contamination.
Part Details
| Part Number | 05728400 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Piston |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Reversible Vibratory Plate | BPR 40/45 D-2 | 00816407, 00817735 |
| Reversible Vibratory Plate | BPR 40/45 D-3 | 00811421, 00817439 |
| Reversible Vibratory Plate | BPR 40/45 D | 00810215 |
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.
