Multiquip SP3354A1 Suction Conn & Groove Pin Assembly

The Multiquip SP3354A1 Suction Conn & Groove Pin Assembly is a genuine OEM component designed for STOW Diaphragm Pump models SDP-3, CA90749, and SDP-2. As a factory-original part, it delivers an exact match to the original specification, ensuring the suction connection and groove pin interface seats and seals correctly without adaptation. DHS Equipment stocks this assembly direct, so you can get the right part and get your pump back to work fast. Confirm your model code — SDP-3, CA90749, or SDP-2 — before ordering to ensure a correct fitment.

Key Features

• Genuine OEM Construction — Manufactured to Multiquip's original specification, so the suction connection and groove pin tolerances match the pump housing exactly as designed.
• Complete Assembly — Supplied as a matched suction connector and groove pin assembly, eliminating the guesswork of sourcing individual components separately.
• Verified Fitment — Confirmed for STOW Diaphragm Pump models SDP-3, CA90749, and SDP-2; cross-reference your model code before ordering.
• Maintains Suction Integrity — A properly seated suction connection is critical to prime retention and consistent flow; a worn or failed connection causes prime loss and reduced pump output.
• Correct Part Number Every Time — Sourced under OEM part number SP3354A1, so there is no ambiguity when referencing service manuals or parts lists for these diaphragm pump models.

The suction connection on a diaphragm pump is the entry point through which fluid is drawn into the pumping chamber on each stroke of the diaphragm. The groove pin locks the connection securely in place, preventing rotation or displacement under the cyclic pressure loads the pump generates during operation. When either component wears, cracks, or loses its secure fit, the pump loses its ability to maintain suction, resulting in reduced flow, erratic priming, or complete loss of fluid transfer capability.

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.