Wacker Neuson 28400-ZL8-023ZA Insulator

The Wacker Neuson 28400-ZL8-023ZA is a genuine OEM Insulator designed for the CT36-5A concrete power trowel series, PT2A trash pump series, and GP2500A portable generator. As a direct Wacker Neuson OEM part, the 28400-ZL8-023ZA is manufactured to the exact material and dimensional specifications of the original component. This insulator is confirmed to fit multiple machine configurations across the CT36-5A, CT36-5A-C, PT2A, and PT2A(I) lines, making it a versatile service part for operators running mixed equipment fleets. Order with confidence knowing the part number matches the original bill of materials for each supported model.

Key Features

• OEM-Grade Thermal and Electrical Isolation — Manufactured to the same material composition as the original, ensuring correct insulating properties and dimensional fit at the mounting interface.
• Drop-In Replacement — Installs in the same position as the factory component across all listed configurations, requiring no modification to the surrounding assembly.
• Broad Model Coverage — Fits the CT36-5A and CT36-5A-C concrete power trowels, PT2A and PT2A(I) trash pumps, and the GP2500A portable generator — a single part number servicing multiple Wacker Neuson product families.
• Protects Adjacent Components — A correctly seated insulator prevents heat transfer and electrical bleed-through that can degrade nearby fittings, wiring, or mounting surfaces over time.
• Fuel and Ignition System Safety — In carbureted engine applications, a damaged or missing insulator can contribute to vapor lock, heat soak, and unstable fuel delivery; replacing it promptly restores safe, stable engine operation.
• Genuine Wacker Neuson Part — Sourced directly from the OEM supply chain, ensuring the part number 28400-ZL8-023ZA exactly matches the original specification documented for each supported machine.

An insulator in a small-engine application serves as a thermal and mechanical barrier between the carburetor — or another heat-sensitive component — and the engine block. By blocking the transfer of combustion heat into the fuel delivery system, the insulator keeps incoming fuel at a stable temperature and prevents vapor lock or erratic fuel metering. When an insulator cracks, warps, or degrades, excess heat migrates into the carburetor, leading to hard starting, rough idle, and inconsistent power output. Replacing a worn insulator restores the thermal separation the engine needs to run cleanly and efficiently.

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.