Wacker Neuson 5100057661 3/8 NPT x 1-5/16 Coupler Fitting

The Wacker Neuson is a genuine OEM 3/8 NPT x 1-5/16 Coupler Fitting designed for E3000 series equipment. Sourced directly through Wacker Neuson's authorized parts supply chain, this fitting carries the exact thread specification and dimensional tolerances required for a correct, leak-free connection. It is confirmed compatible with E3000 models including configurations, and. When you need a direct, by-the-book replacement, the is the part the machine was built with.

Key Features

• OEM Thread Accuracy — Machined to the exact 3/8 NPT thread specification, ensuring a proper seal without the risk of cross-threading or pressure loss common with mismatched fittings.
• Drop-In Connection — Matches the original port geometry on E3000 series units, threading directly into the existing fitting port without reworking or adapting the connection point.
• E3000 Series Verified Fit — Confirmed fitment across multiple E3000 configurations, so you can order with confidence for that specific machine family.
• Leak-Free Fluid or Air Routing — A correctly seated coupler fitting maintains system pressure integrity; a worn or damaged fitting can cause fluid or air loss that degrades machine output and creates diagnostic confusion.
• Genuine Wacker Neuson OEM Part — Supplied as an authorized OEM component, meaning the material grade and dimensional spec match what left the factory — no guesswork on compatibility.

A coupler fitting serves as the threaded connection point between two fluid or pneumatic lines within the machine's plumbing circuit. The 3/8 NPT thread pattern creates a tapered, pressure-rated seal when properly torqued, allowing fluids or compressed air to pass through the system without leakage. When a fitting cracks, corrodes, or strips its threads, the circuit loses pressure integrity — leading to system inefficiency, fluid contamination risk, or outright loss of function in the connected circuit. Replacing a damaged fitting promptly with the correct OEM part restores the sealed pathway the system depends on.

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.