The Wacker Neuson Assembly Diaphragm is a genuine OEM component designed for the GP3800A, GP5600A, GP6600A, GPS5600A, GPS6600A, GV3800A, GV5600A, GV6600A, GV5000A, and GV7000A series portable generators. As a direct OEM part sourced through Wacker Neuson's authorized supply chain, the is manufactured to the same specification as the original component installed at the factory. This Assembly Diaphragm is confirmed to fit an extensive range of GP, GPS, and GV series generator configurations across multiple regulatory variants, including EPA, CARB, CSA, and CAN GFI models. Confirming your generator's model number and machine number before ordering ensures a correct application match across this broad fitment range.
Key Features
- OEM Diaphragm Material Integrity — Manufactured to Wacker Neuson's original compound and thickness specification, ensuring correct flex characteristics and fuel-tight sealing performance within the carburetor circuit.
- Drop-In Carburetor Replacement — Engineered to seat and seal in the original diaphragm cavity without trimming, shimming, or adaptation; retains the same bolt pattern and diaphragm diameter as the factory part.
- Broad GP, GPS, and GV Series Coverage — A single part number covers GP3800A, GP5600A, GP6600A, GPS5600A, GPS6600A, GV3800A, GV5600A, GV6600A, GV5000A, and GV7000A generator families across EPA, CARB, CSA, and CAN GFI regulatory variants.
- Restores Consistent Fuel Metering — A worn or cracked diaphragm disrupts the carburetor's ability to regulate fuel delivery, causing hard starting, rough idle, surging, or stalling under load. Replacing with a fresh OEM diaphragm restores stable engine operation.
- Fuel System Integrity — A compromised diaphragm can allow fuel to pass into areas of the carburetor where it should not be present, making prompt replacement an important step in maintaining safe generator operation.
The Assembly Diaphragm is a flexible membrane seated within the carburetor that regulates fuel flow by responding to changes in engine vacuum and pressure. As the engine draws air and fuel through the carburetor, the diaphragm flexes to open and close the fuel circuit, maintaining the correct mixture across varying load conditions. When the diaphragm stiffens, cracks, or develops pinholes, it can no longer respond accurately to vacuum signals — leading to fuel delivery problems that present as surging, difficulty starting, or loss of power under load.
Part Details
| Part Number | 5000158476 |
|---|---|
| Old Part Number | 0158476 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Assembly Diaphragm |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Premium Portable Generator | GP5600A | 5000620094, 5000620095, 5000620381, 5000620382, 5000620326, 5000620327, 5000620984, 5000620979, 5000620980, 5000620042, 5000620043, 5000620091, 5000620092, 5000620011, 5000620012, 5100041979 |
| GPS5600A,CAN GFI | GPS5600A | 5000620096, 5000620383, 5000620328, 5000620981, 5000620982, 5000620044, 5000620093, 5000620013 |
| GP6600A GENERATOR,CAN GFI | GP6600A | 5000620100, 5000620101, 5000620384, 5000620329, 5000620330, 5000620045, 5000620046, 5000620097, 5000620098, 5000620014, 5000620015, 5100042220 |
| GPS6600A GENERATOR,CAN GFI | GPS6600A | 5000620102, 5000620386, 5000620331, 5000620047, 5000620099, 5000620016 |
| Portable Generator | GP3800A | 5000620104, 5000620379, 5000620485, 5000620342, 5000620484, 5000620041, 5000620103, 5000620010, 5100041978 |
| Premium Portable Generator | GP6600 | 5000620385, 5000620989, 5000620990, 5000620985, 5000620986 |
| GV5000A | GV5000A | 5000009346, 5000009351, 5000009361, 5000009356, 5100006204 |
| GV7000A | GV7000A | 5000009348, 5000009353, 5000009358, 5000009363, 5100006205 |
| 50Hz Portable Value Generator | GV5003A | 5000009347, 5000009362, 5000009352, 5000009357, 5100002154 |
| 50Hz Portable Value Generator | GV7003A | 5000009349, 5000009364, 5000009354, 5000009359, 5100002155 |
| GPS6600A Generator, EPA | GPS6600 | 5000620987, 5000620988 |
| GP3800A Generator, EPA w/Wheel Kit | GP3800 | 5000620976, 5000620974, 5000620975, 5100031174 |
| GP5600A Generator, EPA w/Wheel Kit | GP5600 | 5000620983 |
| Value Generator | GV3800A | 5000620409, 5000620287, 5000620334 |
| Value Generator | GV5600A | 5000620410, 5000620288, 5000620335 |
| Value Portable Generator | GV3800 | 5000620994 |
| Value Portable Generator | GV5600 | 5000620995 |
| Value Portable Generators | GV6600 | 5000620996 |
| Value Generator, 60Hz | GV6600A | 5000620289, 5000620336 |
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.
