The Wacker Neuson Diaphragm is a genuine OEM component designed for the DPU6555, DPU5545, DPU4545, and RD7H series reversible vibratory plates. As a direct factory replacement, this part ships with the full assurance of Wacker Neuson OEM sourcing — meaning the material grade, geometry, and dimensional tolerances match the original exactly. Fitment spans a wide range of DPU and RD7H variants, including electric-start, hand-guided, and emission-compliant configurations across all three DPU plate sizes.
Key Features
- OEM-Grade Diaphragm Material — Manufactured to Wacker Neuson's original compound and thickness specification, ensuring the correct flex characteristics and long-term resistance to fuel and pressure cycling.
- Drop-In Replacement — Matches the original mounting pattern and port alignment, allowing straightforward installation without gasket modification or re-routing of fuel lines.
- Broad DPU and RD7H Compatibility — Verified to fit DPU6555, DPU5545, and DPU4545 series vibratory plates as well as RD7H reversible plate compactors across multiple configuration variants.
- Consistent Fuel Delivery Under Load — A sound diaphragm maintains steady fuel pressure to the carburetor, keeping the engine running evenly during compaction passes. A cracked or hardened diaphragm causes lean running, stalling, or hard starting.
- Fuel System Integrity — A properly seated diaphragm prevents raw fuel or vapor from bypassing the metering circuit, which is critical for safe, stable operation of gasoline-powered compaction equipment.
The diaphragm is a flexible membrane within the carburetor's fuel pump and metering system. It flexes in response to crankcase pressure pulses, drawing fuel from the tank and delivering it to the engine at a controlled rate. When the diaphragm hardens, cracks, or develops pinholes — common with age or extended fuel exposure — fuel flow becomes erratic, causing rough idle, power loss, or a complete failure to start. Replacing a worn diaphragm restores the carburetor's ability to meter fuel accurately, bringing engine response and compaction output back to normal working condition.
Part Details
| Part Number | 5100051941 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Diaphragm |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| DPU6555Heh | DPU6555Heh | 5100009636 |
| DPU6555Hehap | DPU6555Hehap | 5100009638 |
| DPU6555 Hech | DPU6555 Hech | 5100009639 |
| DPU5545Heh | DPU5545Heh | 5100009652 |
| DPU5545Hehap | DPU5545Hehap | 5100009654 |
| DPU5545Hech | DPU5545Hech | 5100009655, 5100051523 |
| DPU4545Heh | DPU4545Heh | 5100009659 |
| DPU6555Hesh | DPU6555Hesh | 5100015774 |
| DPU6555Hecsh | DPU6555Hecsh | 5100015775 |
| DPU6555He | DPU6555He | 5100016940 |
| DPU6555Hes | DPU6555Hes | 5100016941 |
| DPU6555Heap | DPU6555Heap | 5100016943 |
| DPU6555Hec | DPU6555Hec | 5100016944 |
| DPU6555Hecs | DPU6555Hecs | 5100016945 |
| DPU 6555H | DPU 6555H | 5100009651 |
| DPU4545Hech | DPU4545Hech | 5100015429, 5100051522 |
| DPU 6555Hs | DPU 6555Hs | 5100015773 |
| DPU5545He | DPU5545He | 5100016947 |
| DPU5545Heap | DPU5545Heap | 5100016949 |
| DPU5545Hec | DPU5545Hec | 5100016950 |
| DPU4545He | DPU4545He | 5100016951 |
| DPU4545Hec | DPU4545Hec | 5100016953 |
| DPU5545H | DPU 5545H | 5100009656 |
| DPU4545H | DPU 4545H | 5100009661 |
| DPU6555Hechzf | DPU6555Hechzf | 5100021400 |
| DPU4545Hechzf | DPU4545Hechzf | 5100022112 |
| DPU6555Hech | DPU6555Hech | 5100051524 |
| RD7H | RD7H | 5100006333 |
| RD7Heh | RD7Heh | 5100006334 |
| RD7Hf | RD7Hf | 5100006338 |
| RD7Hehf | RD7Hehf | 5100006339 |
| RD7Hfb | RD7Hfb | 5100006343 |
| RD7Hehfb | RD7Hehfb | 5100006344 |
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.
