The Wacker Neuson is a genuine OEM Fuel Air Separator Tank designed for the G-Series portable generator line, including G25, G50, G70, G85, G120, G125, and G160 skid-mounted and mobile generator models across standard, cold weather, custom, and extended run tank configurations. As a direct OEM replacement, the is manufactured to Wacker Neuson's original design tolerances, ensuring proper fuel system integration without the guesswork of adapting an off-spec component. This part covers an exceptionally wide range of G-Series variants — from Tier 3 and Tier 4 Interim through Tier 4 Final configurations — making it a versatile stock item for fleet operators and rental companies managing multiple generator models. Verify your model and machine number against the fitment list before ordering to confirm compatibility.
Key Features
- Genuine OEM Construction: — Manufactured to Wacker Neuson's original fuel system specifications, ensuring the separator maintains correct internal volume, port sizing, and material compatibility with diesel fuel blends used in G-Series generators.
- Direct Drop-In Replacement: — Matches the original mounting configuration and fuel line connections of the 5000155186 application, allowing straightforward installation on compatible G-Series generator models.
- Broad G-Series Compatibility: — Verified fitment across G25, G50, G70, G85, G120, G125, and G160 skid-mounted and mobile generator variants, including standard, cold weather, custom, extended run tank, and 600V switchable configurations.
- Protects Fuel System Integrity: — Properly separating entrained air from diesel fuel prevents fuel starvation, erratic engine speed, and injector damage — all common consequences of a failed or degraded separator in continuous-duty generator operation.
- Multi-Tier Engine Compatibility: — Suitable for G-Series units equipped with Tier 3, Tier 4 Interim (T4i), and Tier 4 Final (T4F) engines, making it a reliable service part across multiple equipment generations.
The fuel air separator tank removes entrained air bubbles from diesel fuel before it reaches the engine's injection system. In generator applications — where consistent fuel delivery is critical to maintaining stable voltage output and engine speed — even small amounts of air in the fuel line can cause hesitation, surging, or shutdown under load. When the separator degrades or develops a leak, air ingestion becomes a persistent problem that can mask itself as carburetion or injector faults. Replacing a worn unit with a correct OEM part restores the fuel system's ability to deliver a steady, air-free fuel supply to the engine.
Part Details
| Part Number | 5000155186 |
|---|---|
| Old Part Number | 0155186 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Fuel Air Separator Tank |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Skid-mounted Mobile Generator, Custom | G70 | 5000620352, 5000620350, 5000620351, 5000009367, 5000009468, 5000620002, 5000620648, 5000620647, 5000620711, 5000620646, 5200001318, 5200003220, 5200006879, 5200003975, 5200003973, 5200003974, 5200014464, 5000009260, 5200004151, 5000620708, 5200014463, 5200014465, 5200008344, 5200008342, 5200008343, 5200008339, 5200008341, 5200008719, 5200008340, 5000009464, 5100025262, 5000009478, 5100025814, 5100025838 |
| Skid-mounted Mobile Generator | G50 | 5000009467, 5000009366, 5000620001, 5200001062, 5200001063, 5200006878, 5200001317, 5200001060, 5200001061, 5200014322, 5000009259, 5200014319, 5200014320, 5200014323, 5000620707, 5200017829, 5200022589, 5100042434, 5200017830, 5100042430, 5100042435, 5000620710, 5100045494, 5000620964, 5000620965, 5000620966, 5100042431, 5100042433, 5100045085, 5100045493, 5100042432, 5000009463, 5000009477, 5100025812, 5100026954, 5100029210, 5100026955, 5100026956 |
| Mobile Generator, Custom | G25 | 5000620346, 5000620344, 5000620345, 5000620642, 5000009466, 5000620004, 5000620640, 5000620709, 5000620641, 5000009368, 5200005557, 5200003991, 5000620931, 5200001316, 5200009372, 5200009376, 5200009370, 5200009371, 5200009373, 5200009377, 5200014461, 5000009258, 5200009375, 5200009374, 5200014460, 5200014462, 5000621005, 5100041584, 5200022587, 5100045084, 5100041580, 5100041592, 5000620706, 5100017591, 5100022834, 5100041581, 5100041582, 5100041583, 5100045541, 5100045542, 5100050326, 5000009462, 5000009476, 5100042507, 5100042510, 5100042512, 5100042509, 5100025836, 5100042508 |
| Mobile Generator | G85 | 5000009459, 5000620003, 5000009369, 5000009310, 5000009305, 5000009465 |
| Mobile Generator (Cold Weather ) | G120 | 5000620291, 5000620290, 5000620292 |
| Skid-mounted Mobile Generator | G160 | 5000009306, 5000620069, 5000620070 |
| Mobile Generator (custom) | G125 | 5000620067, 5000620068, 5000009261 |
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.
