Wacker Neuson 5000159088 Fuel/Water Separator

The Wacker Neuson is a genuine OEM Fuel/Water Separator designed for a broad range of Wacker Neuson G25 portable generators, LTW and LTV light towers, HI indirect-fired air heaters, and PT6 series trash pumps. Sourced directly from Wacker Neuson, this replacement separator carries the same part number and meets the same specifications as the component installed at the factory. It fits dozens of G25 generator configurations — including standard, cold weather, custom, and extended-run variants — as well as LTW6K, LTW8K, LTW20Z-1, LTW20Z-3, and their V-series counterparts, and HI750 and HI900 indirect heater models. Confirm your machine's model number and serial number before ordering to ensure an exact match.

Key Features

• Genuine OEM Filtration Integrity — Manufactured to Wacker Neuson's original specification, this separator delivers the same water-separation efficiency and fuel-flow capacity as the part it replaces, protecting the downstream fuel system from moisture contamination.
• Direct Drop-In Replacement — Matches the original mounting interface, inlet/outlet connections, and bowl configuration, so installation follows the same procedure as the factory-fitted unit with no adapters or rework.
• Wide Cross-Family Fitment — A single part number covers G25 generators, LTW/LTV light tower families, HI750 and HI900 indirect air heaters, and PT6LT/PT6LS trash pumps, making it a practical stocking item for fleets running multiple Wacker Neuson products.
• Protects Injectors and Fuel Components — Free water in diesel fuel accelerates injector wear and can cause hard-starting or fuel system corrosion; a correctly functioning separator removes that water before it reaches sensitive components.
• Fuel System Safety Compliance — Using the correct OEM separator ensures the fuel circuit meets the design intent for Tier 4i/T4 compliant engines fitted to these machines, supporting emissions system reliability alongside engine protection.

A fuel/water separator is a filter assembly positioned in the diesel supply line between the fuel tank and the injection system. Its job is to trap free water that has entered the fuel — through condensation, contaminated supply, or tank breathing — and hold it in a collection bowl before it can reach the fuel pump and injectors. Water in diesel fuel disrupts combustion, promotes internal corrosion, and can cause injector failure; on equipment like generators and light towers that often run for extended periods in outdoor or cold-weather conditions, effective water separation is especially critical. When the separator becomes saturated or its element degrades, water passes through unchecked, leading to rough running, hard starts, or long-term injector damage.

Part Details

Compatibility & Fitment

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.