The Wacker Neuson 5100041356 Hardware Set, DEF Head is a genuine OEM fastener and hardware assembly designed for the G70, G100, G130, and G150 series portable generators. As a direct factory replacement, this set ensures the DEF (Diesel Exhaust Fluid) dosing head is correctly secured and sealed, maintaining the integrity of the emissions system on Tier 4 and Tier 4i compliant units. Wacker Neuson engineers this hardware to the same specifications used in original production, so installation is straightforward and the fit is exact. Confirm your generator model number against the fitment list before ordering to ensure this is the correct set for your machine.
Key Features
- Genuine OEM Hardware Tolerances — Each fastener in the set is manufactured to the torque and thread specifications required for the DEF head assembly, preventing under-clamping or over-torque failures that can crack the dosing head housing.
- Direct DEF System Replacement — Replaces the complete hardware set at the DEF dosing head mounting point, restoring proper clamping force and fluid-tight contact without the need to source individual fasteners separately.
- Broad Generator Series Coverage — Fits multiple configurations across the G70, G100, G130, and G150 generator families, including Standard, Cold Weather, Custom, and URI HVAC T4/T4F/T4i variants.
- Emissions System Integrity — Correct hardware at the DEF head is critical for maintaining SCR (Selective Catalytic Reduction) system performance; loose or mismatched fasteners can trigger fault codes and take the machine out of service.
- Regulatory Compliance Support — Proper DEF system fastening is required for Tier 4 and Tier 4i emissions compliance; using the correct OEM hardware set helps keep your generator operating within EPA-regulated parameters.
The DEF head is the mounting and connection point for the Diesel Exhaust Fluid dosing injector within the generator's aftertreatment system. It meters precise quantities of DEF into the exhaust stream, enabling the SCR catalyst to convert nitrogen oxides (NOx) into harmless nitrogen and water vapor — a requirement for Tier 4 and Tier 4i engine certification. The hardware set that secures the DEF head must maintain consistent clamping pressure and a leak-free seal; if any fastener is stripped, corroded, or missing, the dosing head can shift or weep fluid, causing system faults, DEF contamination, and potential engine derate or shutdown. Replacing worn or damaged hardware with the correct Wacker Neuson 5100041356 set restores the assembly to its engineered specification and keeps the aftertreatment system functioning as designed.
Part Details
| Part Number | 5100041356 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Hardware Set, DEF Head |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| G150 Generator, Standard T4i | G150 | 5200023235, 5200023236, 5200023237, 5100045088, 5100045570, 5100045571, 5100049841, 5100049842, 5100049843, 5100036309 |
| G130 Generator, Cold Weather T4 | G130 | 5200023233, 5200023232, 5200023234, 5100045560, 5100045559, 5100045087, 5100045565, 5100045566, 5100045564, 5100049838, 5100049839, 5100049840, 5100036308 |
| G70 Generator, Standard T4F | G70 | 5200023226, 5200023227, 5200023228, 5100042499, 5100036306, 5100042497, 5100042496, 5100042500, 5100042498 |
| G100 | G100 | 5100045086, 5100045498, 5100045555, 5100045553, 5100045554, 5100045499, 5100033310, 5100049836, 5100049837, 5100049835, 5100033311, 5100033312, 5100036307 |
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.
