Wacker Neuson 5100032897 Expanding Valve

The Wacker Neuson Expanding Valve is a genuine OEM expanding valve designed for the BL744ch, BL744h, BL742h, BL744c, BL744 EX, and BL742 EX Backhoe Loader series. Sourced directly from Wacker Neuson, this part carries the same specifications as the component installed at the factory, so you can replace it with confidence. Compatibility spans the full BL700-series backhoe loader lineup, making the correct verified replacement across all listed models.

Key Features

• Genuine OEM Refrigerant Flow Accuracy — Built to Wacker Neuson's exact metering specifications, ensuring the valve regulates refrigerant expansion at the correct rate for stable climate system performance.
• Direct Drop-In Installation — Matches the original port sizing, thread pattern, and connection type of the factory valve, so it seats and seals without rework or adaptation.
• Broad BL700-Series Coverage — A single part number covers the BL744ch, BL744h, BL742h, BL744c, BL744 EX, and BL742 EX Backhoe Loaders, simplifying parts sourcing across your fleet.
• Consistent Cab Climate Control — A properly functioning expanding valve maintains the correct evaporator temperature, keeping cab cooling efficient and operator comfort consistent during long shifts.
• Refrigerant System Integrity — Because the expanding valve is a sealed refrigerant-circuit component, using a correctly rated OEM part helps maintain system pressure balance and prevents premature compressor wear.

An expanding valve — also known as a thermostatic expansion valve — controls the flow of refrigerant into the evaporator coil inside the cab's air conditioning system. By metering the refrigerant precisely, it regulates evaporator temperature and maintains efficient cooling under varying load conditions. When the valve fails or sticks, the A/C system loses the ability to control refrigerant flow correctly, resulting in poor cooling performance, evaporator icing, or compressor overload.

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.