The Wacker Neuson 45909 Cylinder with Piston is a genuine OEM assembly designed for the BS30, BS45Y, BS45YA, BS52Y, BS60Y, and BS65Y series vibratory rammers. Sourced directly from Wacker Neuson, this part meets the exact tolerances and material specifications required to restore full compression and stroke performance to your machine. It fits across multiple BS-series rammer configurations, including 6-inch, 10-inch, and 11-inch shoe variants, as well as variable-speed models in the BS65Y lineup. When your rammer loses power, fails to stroke correctly, or shows signs of excessive wear in the cylinder bore, the 45909 is the correct OEM replacement to bring it back to operational spec.
Key Features
- Matched Bore and Piston Tolerances — Genuine OEM construction ensures the cylinder bore and piston are dimensionally matched for correct compression and consistent stroke output on every impact cycle.
- Direct Assembly Replacement — Supplied as a complete cylinder and piston unit, allowing straightforward installation into the BS-series rammer engine without the need to source and pair individual components.
- Broad BS-Series Compatibility — Fits BS30, BS45Y, BS45YA, BS52Y, BS60Y, and BS65Y vibratory rammers across 6-inch, 10-inch, and 11-inch shoe configurations, including variable-speed models.
- Restores Full Impact Energy — A worn or scored cylinder causes loss of compression, reduced strike force, and hard starting; replacing with part 45909 brings impact energy back to rated output.
- Fuel System Integrity — Correct piston-to-bore fit prevents blow-by that leads to oil contamination and uncontrolled fuel combustion, protecting the rest of the engine from secondary damage.
The cylinder and piston assembly is the heart of a vibratory rammer's two-stroke engine. The piston travels up and down within the cylinder bore, generating the compression needed to fire the air-fuel mixture and drive the rammer's eccentric mechanism downward into the soil. When the cylinder bore becomes worn or scored — or the piston rings lose their seal — compression drops, the rammer loses striking force, and starting becomes difficult or impossible. Replacing the full assembly with a correctly spec'd unit like the Wacker Neuson 45909 restores the compression ratio and stroke consistency that cohesive soil and trench compaction applications demand.
Part Details
| Part Number | 45909 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Cylinder with Piston |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Vibratory Rammer with 254mm/10 in Shoe | BS52Y | 5000007508, 5000008053, 5000008054, 5000009409, 5000007148, 5000007559, 5000007560, 5000007609 |
| Variable Speed Vibratory Ramme r, 280mm/11in Shoe | BS65Y | 5000007567, 5000007566 |
| BS30 | BS30 | 5000005216 |
| Vibratory Rammer | BS60Y | 5000006779, 5000007509 |
| Vibratory Rammer with 250mm/10 in Shoe | BS45Y | 5000007137 |
| Vibratory Rammer with 152mm/6i n Shoe | BS45YA | 5000007558 |
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.
