The Wacker Neuson Radiator Complete is a genuine OEM Radiator Complete designed for the LTW6K, LTW8K, LTW20Z-1, LTW20Z-3, and G25 series light towers and mobile generators. Sourced directly from Wacker Neuson, this is the exact assembly specified for these machines at the production level, ensuring a direct, no-guesswork replacement when the original unit needs to be swapped out. The covers an extensive range of configurations including Standard, Cold Weather, Custom, and Extended Run variants across Tier 4 and Tier 4 Final emissions levels. If you're servicing a Wacker Neuson light tower or G25 generator, confirm your serial number against the fitment list to select the correct part.
Key Features
- OEM Cooling Capacity: — Manufactured to the same core size, tube count, and fin density as the original, maintaining the engineered cooling load for Isuzu-powered light tower and generator applications.
- Direct Assembly Swap: — Supplied as a complete radiator assembly with mounting provisions that align to existing brackets and hose connections on covered models — no fabrication or adaptation needed.
- Broad Model Coverage: — Fits LTW6K, LTW8K, LTW20Z-1, LTW20Z-3, G25, and G20 series machines across Standard, Cold Weather, Custom, Extended Run, and Battlefield configurations in Tier 4i and Tier 4 Final builds.
- Prevents Overheating Damage: — A correctly functioning radiator keeps engine coolant temperatures within operating range; a cracked, clogged, or leaking core leads to overheating shutdowns and potential long-term engine damage during extended run cycles.
- Thermal Safety Compliance: — Maintaining the OEM-specified cooling assembly is essential on Tier 4 emissions-compliant engines, where sustained overtemperature conditions can trigger protective shutdowns or cause DPF and aftertreatment system damage.
The radiator is the central component of the engine's liquid cooling system. It works by circulating hot coolant from the engine through a network of narrow tubes surrounded by thin metal fins, where airflow drawn by the cooling fan dissipates the heat before the coolant is returned to the engine. On towable light towers and mobile generators that run for extended periods — often overnight or across multi-day deployments — the radiator carries a sustained thermal load, making its condition critical to uptime. When a radiator fails through internal corrosion, external damage, or a compromised seal, coolant loss and engine overheating follow quickly, bringing the machine offline until the assembly is replaced.
Part Details
| Part Number | 5100025451 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Radiator Complete |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| LTW20Z-1, LIGHT TOWER 60Hz, ISUZU, CUSTOM, T4i | LTW20Z1 | 5000620842, 5000620375, 5200004205, 5200004096, 5100051572, 5100051571, 5200014324, 5200014326, 5200018239, 5200023191, 5200024872, 5200014328 |
| LTW6K Light Tower, Standard T4 | LTW6K | 5000620372, 5000620840, 5200004094, 5200024870 |
| LTW8K Light Tower, Standard T4 | LTW8K | 5000620374, 5000620841, 5200004204, 5200004095, 5200023190, 5200024871 |
| LTW20Z-3, LIGHT TOWER 60HZ, ISUZU TIER 4i | LTW20Z3 | 5000620376, 5000620843, 5200003583, 5200004097, 5200014325, 5200014327, 5200023192, 5200023604, 5200014329 |
| G25 Generator, Custom T4F | G25 | 5200009372, 5200009376, 5200009370, 5200009371, 5200009373, 5200009377, 5200009375, 5200009374, 5100041584, 5200022587, 5100045084, 5100041580, 5100041592, 5100017591, 5100041581, 5100041582, 5100041583, 5100045541, 5100045542, 5100050326 |
| LTW20Z3-V S LIGHT TOWER, COLD WEATHER, T4i | LTW20Z3-V S | 5200018566, 5200018558, 5200018562, 5200023196, 5100015094, 5100022126 |
| LTW20Z1-V S LIGHT TOWER, COLD WEATHER, T4i | LTW20Z1-V S | 5200018565, 5200018557, 5200018561, 5200024875, 5200023195, 5100015093, 5100022125 |
| LTW6K-V S Light Tower, Cold Weather T4 | LTW6K-V S | 5200018563, 5200018555, 5200018559, 5200024873 |
| LTW8K-V S Light Tower, Cold Weather T4 | LTW8K-V S | 5200018564, 5200018556, 5200023194, 5200018560, 5200024874, 5100015095, 5100022084 |
| Light Tower | LTW20Z3-V | 5200012881, 5200012885, 5200012867, 5200022694 |
| Light Tower | LTW6K-V | 5200012864, 5200012868, 5200012882 |
| Light Tower | LTW8K-V | 5200012869, 5200012883, 5200012865 |
| Light Tower | LTW20Z1-V | 5200012880, 5200012884, 5200012866 |
| Mobile Generator | G20 | 5200016628, 5200022625 |
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.
