Multiquip YS020331 1 1/4" Coupler

The Multiquip YS020331 1 1/4" Coupler is a genuine OEM replacement designed for LITTLE SUB submersible pumps. This coupler is sourced directly from Multiquip, ensuring the correct sizing and material grade for a drop-in fit on compatible LITTLE SUB models. Verify your model against the fitment data before ordering to confirm compatibility with your unit.

Key Features

• Genuine OEM Construction — Manufactured to Multiquip's original material and dimensional specifications, so the coupler seals and connects with the same integrity as the part it replaces.
• Correct 1 1/4" Port Sizing — Matches the discharge/connection port diameter exactly, eliminating the need for adapters or improvised fittings that can restrict flow or cause leaks.
• Direct Fit for LITTLE SUB Submersible Pumps — Engineered specifically for LITTLE SUB series units, so installation is straightforward with no reworking of the connection point.
• Maintains Full Flow Capacity — A properly seated coupler prevents pressure loss at the connection, keeping the pump operating at its rated output without bypass or leakage.
• Leak-Resistant Connection — Correct material grade and thread or slip fit integrity at the coupler joint reduces the risk of water ingress or discharge-side leaks during submersed operation.

A coupler on a submersible pump serves as the mechanical and hydraulic connection point between the pump's discharge outlet and the attached hose or pipe. When this fitting is cracked, worn, or incorrectly sized, water can bypass or leak at the joint, reducing pumping efficiency and potentially allowing air into the discharge line. Replacing a damaged coupler with the correct OEM part restores a secure, full-bore connection and keeps the pump moving water at its intended rate.

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.