The Wacker Neuson Water Bottle Cap is a genuine OEM component designed for the G25, G50, G70, and G85 series portable and skid-mounted mobile generators. Sourced directly from Wacker Neuson, this cap is the exact part used in original production across a wide range of generator configurations including standard, cold weather, custom, and extended run tank variants. Part number cross-references across dozens of G-series machine numbers, making it one of the most broadly applicable service parts in the GP generator lineup. If your generator's coolant overflow or water bottle assembly requires a replacement cap, this is the correct OEM solution.
Key Features
- Genuine OEM Seal Integrity — Molded to OEM specification, this cap maintains the correct pressure retention and sealing characteristics required for the water bottle assembly on G-series generators.
- Direct Drop-In Replacement — Threads directly onto the existing water bottle fitting with no modification to the surrounding assembly required.
- Broad G-Series Compatibility — Fits G25, G50, G70, and G85 mobile generators across standard skid, cold weather, custom, and extended run tank configurations.
- Prevents Coolant Loss — A properly sealed cap keeps the coolant overflow system closed, protecting the engine from heat-related damage during sustained operation.
- Fuel and Emission Tier Versatility — Confirmed fit across Tier 3, T4i, and T4F emission configurations within the G-series family.
The water bottle cap seals the coolant overflow reservoir on the generator's engine cooling system. It holds pressure within the overflow bottle and prevents coolant from evaporating or spilling during operation. When the cap fails — whether through a cracked seal, stripped threads, or a missing gasket — the cooling system loses its ability to maintain proper fluid levels, which can lead to engine overheating and unplanned shutdowns on the job. Replacing a damaged or missing cap with the correct OEM part is a straightforward service step that keeps the cooling circuit operating as designed.
Part Details
| Part Number | 5000160776 |
|---|---|
| Old Part Number | 0160776 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Water Bottle Cap |
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, 5200014464, 5000620708, 5200014463, 5200014465, 5200008344, 5200008342, 5200008343, 5200008339, 5200008341, 5200008340, 5100025814, 5100025838 |
| Skid-mounted Mobile Generator | G50 | 5000009467, 5000009366, 5000620001, 5200001062, 5200001063, 5200006878, 5200001317, 5200001060, 5200001061, 5000620707, 5000620710, 5000620964, 5000620965, 5000620966, 5100025812, 5100026954, 5100029210, 5100026955, 5100026956 |
| Mobile Generator, Custom | G25 | 5000620346, 5000620344, 5000620345, 5000620642, 5000009466, 5000620004, 5000620640, 5000620709, 5000620641, 5000009368, 5200005557, 5200003991, 5000620931, 5200001316, 5200014461, 5200014460, 5200014462, 5000621005, 5000620706, 5100022834, 5100042507, 5100042510, 5100042512, 5100042509, 5100025836, 5100042508 |
| Mobile Generator | G85 | 5000009459, 5000620003, 5000009369 |
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.
