The Wacker Neuson Filter Minder Gauge is a genuine OEM component designed for the G25, G50, G70, and G85 mobile generator series, as well as LTW20Z light towers. As a direct Wacker Neuson OEM part, the is manufactured to the exact specifications of the original, ensuring accurate filter status indication and a drop-in installation with no guesswork. This gauge fits a wide range of skid-mounted, cold weather, custom, and extended run tank configurations across multiple Tier ratings, making it one of the most broadly applied service parts in the G-series and LTW20Z lineup.
Key Features
- Calibrated Restriction Monitoring — Provides accurate, real-time visual indication of air filter restriction so operators know exactly when a filter change is needed — not before, not after.
- Genuine OEM Construction — Sourced directly from Wacker Neuson, this gauge meets the same pressure-sensing tolerances as the unit installed at the factory, preserving measurement accuracy over the service life of the machine.
- Broad G-Series and LTW20Z Fitment — Compatible with G25, G50, G70, and G85 mobile generators and LTW20Z-1 and LTW20Z-3 light towers across standard, cold weather, custom, and extended run tank configurations.
- Direct-Swap Installation — The 5000158691 mounts into the existing port and connects to the air intake system the same way as the original, allowing a clean service replacement without bracket modifications or adapter fittings.
- Protects Engine and Power Output — A functioning Filter Minder Gauge prevents operators from running a clogged filter too long, which can starve the engine of air, reduce generator output, and accelerate engine wear.
- Supports Proper Emissions Compliance — Accurate filter monitoring is particularly important on Tier 4i and Tier 4F certified engines, where running with a restricted air filter can push combustion outside the tuned emissions window.
A Filter Minder Gauge is a differential pressure indicator mounted on the air intake system of an engine. It measures the vacuum created as air is drawn through the air filter element — when the filter loads up with dirt and debris, airflow restriction increases and the gauge reading rises. Once the indicator reaches the service threshold, it signals that the filter element needs to be cleaned or replaced. Without a properly functioning gauge, operators have no reliable way to time filter service, leading either to premature filter changes that waste consumables or to over-extended intervals that allow a choked filter to rob the engine of combustion air, reduce power output, and increase fuel consumption. On generator and light tower applications — where runtime continuity is critical — keeping this gauge in accurate working order is a straightforward way to protect a high-value machine.
Part Details
| Part Number | 5000158691 |
|---|---|
| Old Part Number | 0158691 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Filter Minder Gauge |
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 |
| LTW20Z-1, LIGHT TOWER 60Hz, ISUZU, CUSTOM, T4i | LTW20Z1 | 5000620842, 5000620375, 5200004205, 5200004096, 5200023191, 5200024872 |
| LTW20Z-3, LIGHT TOWER 60HZ, ISUZU TIER 4i | LTW20Z3 | 5000620376, 5000620843, 5200003583, 5200004097, 5200023192 |
| Light Tower | LTW20Z3-V | 5200012881, 5200012885, 5200012867, 5200022694 |
| Light Tower | LTW20Z1-V | 5200012880, 5200012884, 5200012866 |
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.
