The Wacker Neuson Block Heater Engine is a genuine OEM component designed for G25 and G50 portable generators and LTW20Z series light towers across a wide range of configurations including standard, cold weather, custom, and extended-run variants. Sourced directly from Wacker Neuson, this part meets the exact specifications of the original component installed at the factory. The covers an extensive fitment range across Tier 4i and Tier 4 Final engine configurations, making it the correct choice for fleet operators and service technicians working across multiple machine variants.
Key Features
- Genuine OEM Heating Element: — Manufactured to Wacker Neuson's original wattage and thermal output spec, ensuring the engine block reaches operating temperature consistently in cold-weather conditions.
- Direct Drop-In Installation: — Engineered to match the original mounting interface and electrical connections on G25, G50, and LTW20Z series machines — no adapters or custom fittings needed.
- Broad Cold-Weather Fleet Coverage: — Fits a wide range of G25, G50, and LTW20Z configurations including cold weather, custom, skid-mounted, extended run, and URI HVAC variants across Tier 4i and Tier 4 Final emissions levels.
- Cold-Start Protection: — Keeps engine oil and coolant at a workable temperature before startup, reducing wear on cylinder walls and bearings during initial crank in low-temperature environments.
- Fuel System and Cold-Start Safety: — A functioning block heater supports correct fuel viscosity and injection timing at startup — critical for diesel-powered generators and light towers operating in cold climates where hard starts can damage injection components.
A block heater warms the engine coolant and surrounding metal before the machine is started, which is especially important for diesel-powered equipment operating in cold climates. Without adequate pre-heating, cold oil and coolant place heavy stress on internal engine components during initial startup, accelerating wear over time. When a block heater fails, the engine loses its cold-start advantage — increasing crank time, fuel consumption, and the risk of hard-start damage to injection and combustion components.
Part Details
| Part Number | 5000113912 |
|---|---|
| Old Part Number | 0113912 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Block Heater Engine |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Mobile Generator, Custom | G25 | 5000620346, 5000620345, 5000620642, 5000009466, 5000620004, 5000620709, 5000620641, 5200005557, 5000620931, 5200009372, 5200009376, 5200009371, 5200014461, 5200009375, 5200014462, 5000621005, 5100041584, 5200022587, 5100041592, 5200003991, 5100022834, 5100041581, 5100041582, 5100045541, 5100045542, 5000009462, 5000009476, 5100042510, 5100042512, 5100042509, 5100025836, 5100042508 |
| LTW20Z-1, LIGHT TOWER 60Hz, ISUZU, CUSTOM, T4i | LTW20Z1 | 5000620842, 5200004205, 5200004096, 5100051572, 5100051571, 5200014326, 5200018239, 5200023191, 5200024872, 5200014328 |
| LTW20Z-3, LIGHT TOWER 60Hz, ISUZU, CUSTOM, T4i | LTW20Z3 | 5000620843, 5200003583, 5200004097, 5200014327, 5200023192, 5200023604, 5200014329 |
| G50 Generator, Custom T4F | G50 | 5200014322, 5200014320, 5200022589, 5100042434, 5100042435, 5100045494, 5100042431, 5100045493, 5100042432 |
| LTW20Z3-V S LIGHT TOWER, COLD WEATHER, T4i | LTW20Z3-V S | 5200018566, 5200018562, 5200023196, 5100015094, 5100022126 |
| LTW20Z1-V S LIGHT TOWER, COLD WEATHER, T4i | LTW20Z1-V S | 5200018565, 5200018561, 5200024875, 5200023195, 5100015093, 5100022125 |
| Light Tower | LTW20Z3-V | 5200012881, 5200012885, 5200022694 |
| Light Tower | LTW20Z1-V | 5200012880, 5200012884 |
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.
Wacker Neuson
Wacker Neuson 5000180109 Engine Block Heater Lightweight
