The Wacker Neuson Lower Radiator Hose is a genuine OEM component designed for G100 and G120 series portable generators, including Standard T4i, Custom T4i, Cold Weather T4i, and Hertz T4i configurations. As a direct OEM part, the is manufactured to the exact dimensions and material specifications required by Wacker Neuson, ensuring a correct, leak-free fit in the cooling system of your G100 or G120 generator. This hose covers the full range of T4i variants across both generator families, making it the right choice whether you're servicing a standard rental unit or a specialized cold-weather or custom build.
Key Features
- OEM Coolant Compatibility: — Constructed from hose material rated for the coolant type, pressure range, and temperature cycling of the G100 and G120 engine cooling systems — no substitutions or workarounds needed.
- Drop-In Lower Hose Fitment: — Matches the exact routing geometry of the lower radiator position, connecting directly to the original clamp points without trimming or repositioning.
- Broad G100 and G120 T4i Coverage: — A single part number covers Standard, Custom, Cold Weather, and Hertz T4i variants across both the G100 and G120 generator families.
- Cooling System Integrity: — A properly seated lower radiator hose maintains consistent coolant flow between the radiator and engine block, protecting the generator from overheating during extended load operation.
- Fuel System Safety: — Replacing a cracked or softened lower hose before it fails prevents coolant loss under load, which can cause rapid engine temperature spikes and unplanned generator shutdowns on the jobsite.
The lower radiator hose carries cooled coolant from the bottom of the radiator back to the engine water pump, completing the closed-loop cooling circuit. In a generator like the G100 or G120, which may run continuously under heavy electrical load, maintaining full coolant flow through this hose is critical to keeping engine temperatures within safe operating limits. A hose that has hardened, cracked, or begun to collapse internally will restrict flow or leak, leading to overheating and potential engine damage if not addressed promptly.
Part Details
| Part Number | 5200003786 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Lower Radiator Hose |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| G100 Generator, Custom T4i | G100 | 5200003859, 5200003857, 5200003858, 5200008716 |
| G120 Generator,Custom T4i | G120 | 5200003856, 5200003854, 5200003855, 5200008715 |
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.
