The Wacker Neuson is a genuine OEM Dashpot Check Valve designed for the GP3800A, GP5600A, GP6600A, GPS5600A, GPS6600A, GV3800A, GV5000A, GV5600A, GV6600A, and GV7000A portable generator series. Sourced directly from Wacker Neuson, this part meets the same specifications as the original component installed at the factory. It is a direct-fit replacement for a wide range of GP, GPS, and GV series generators across multiple regulatory configurations including EPA, CSA, and CARB variants. If your generator is exhibiting carburetor surging, rough idle, or inconsistent throttle response, the dashpot check valve is a common service item to inspect and replace.
Key Features
- Genuine OEM Valve Integrity — Manufactured to Wacker Neuson's original material and dimensional specification, ensuring correct one-way flow control and dashpot damping behavior within the carburetor circuit.
- Direct-Fit Replacement — Engineered to install in the same location as the original valve with no modification to the carburetor or fuel system required.
- Broad Generator Series Fitment — Compatible with GP3800A, GP5600A, GP6600A, GPS5600A, GPS6600A, GV3800A, GV5000A, GV5600A, GV6600A, GV7000A, GV5003A, and GV7003A portable generators across EPA, CSA, and CARB configurations.
- Stable Engine Speed Control — A correctly functioning dashpot check valve allows the carburetor to modulate airflow smoothly, preventing engine surge and maintaining steady output voltage — critical for sensitive tools and equipment running off the generator.
- Fuel System Safety — As a one-way valve in the fuel and air circuit, a failed or cracked check valve can cause uncontrolled fuel metering. Replacing a worn valve restores proper sealed operation and reduces the risk of fuel system irregularities.
The dashpot check valve is a small but essential component within the carburetor assembly of a portable generator. It functions as a one-way flow control device that works alongside the dashpot diaphragm to dampen sudden throttle movements, preventing the engine from surging or hunting when the load changes. When this valve cracks, hardens, or loses its sealing ability, the dashpot system can no longer buffer throttle transitions effectively, resulting in an unstable idle, engine surge, or erratic power output. Replacing a faulty dashpot check valve with part number 5000158480 restores smooth governor and carburetor operation across the GP, GPS, and GV generator families.
Part Details
| Part Number | 5000158480 |
|---|---|
| Old Part Number | 0158480 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Dashpot Check Valve |
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.
