The Wacker Neuson Diaphragm is a genuine OEM component designed for the BS50-4As, BS60-4As, BS70-4As, BS62-4Ab/28, BS65-4As, BS68-4Ab/28, BS72-4As, and related 4-stroke rammer series. Sourced directly from Wacker Neuson, this part meets the original design and material specifications required to keep your rammer running at full capacity. It fits a wide range of BS-series models including US, CN, and Sunbelt variants, making it a versatile stocking part for fleet operators and rental yards. Confirm your machine's model number before ordering to ensure an exact match.
Key Features
- Genuine OEM Flex Integrity — Manufactured to Wacker Neuson's original material and thickness specifications, ensuring the diaphragm flexes and seals consistently under operating pressure cycles.
- Drop-In Replacement — Engineered to match the original mounting configuration and port dimensions, so it seats correctly without reworking the carburetor housing.
- Broad BS-Series Coverage — Compatible with BS50-4As, BS60-4As, BS65-4As, BS68-4Ab/28, BS70-4As, BS72-4As, and additional 4-stroke rammer variants including US, CN, and Sunbelt configurations.
- Restores Proper Fuel Delivery — A failed or hardened diaphragm disrupts fuel metering and causes hard starting, rough running, or complete fuel starvation; replacing it restores consistent engine performance.
- Fuel System Integrity — A correctly functioning diaphragm maintains the sealed fuel circuit inside the carburetor, preventing unmetered fuel flow and reducing the risk of flooding or lean-run conditions.
The diaphragm is a flexible membrane located inside the carburetor that regulates fuel flow by responding to pressure changes created during the engine's intake cycle. As the engine pulls air, the diaphragm flexes to open and close fuel passages, delivering the correct fuel-to-air mixture at all throttle positions. When the diaphragm stiffens, cracks, or develops pinholes — common after prolonged exposure to fuel and heat — the carburetor loses the ability to meter fuel accurately, leading to rough idling, power loss, or an engine that won't start.
Part Details
| Part Number | 5100049174 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Diaphragm |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| BS50-4AS 11IN US | BS50-4As 11in US | 5100030598 |
| BS50-4As 11in | BS50-4As 11in | 5100030599 |
| BS60-4AS 11IN US | BS60-4As 11in US | 5100030605, 5100054151 |
| BS60-4As 11in | BS60-4As 11in | 5100030606, 5100037562, 5100051581 |
| BS70-4As 11in US | BS70-4As 11in US | 5100030610 |
| BS70-4As 11IN | BS70-4As 11in | 5100030611 |
| Rammer BS60-4As 11in CN | BS60-4As 11in CN | 5100058869 |
| BS65-4As 11in | BS65-4As 11in | 5100061307 |
| BS72-4As 11in | BS72-4As 11in | 5100061309 |
| BS62-4Ab/28 | BS62-4Ab/28 | 5100061966, 5100070526 |
| BS68-4Ab/28 | BS68-4Ab/28 | 5100061970, 5100070525, 5100070527 |
| 4 stroke rammer BS50-4As, 280 mm adapter | BS50-4As 11in o. bsz | 5100068310 |
| BS62-4A/28 | BS62-4A/28 | 5100068373 |
| BS68-4A/28 | BS68-4A/28 | 5100068375 |
| BS68-4A/28 CN | BS68-4A/28 CN | 5100070152 |
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.
