Multiquip 0603300000 Half Union

The Multiquip 0603300000 Half Union is a genuine OEM fitting designed for Multiquip DCA-series ultra-silent diesel generators, including the DCA-220SSK, DCA400SPK, DCA800SSK, DCA125SSK, and DCA800SSK-GEER. As a direct OEM replacement, this half union is sourced to the same specifications as the original component installed at the factory, ensuring a secure, leak-free connection within the generator's fluid or fuel line circuit. Keeping the correct fitting in service is essential to maintaining proper flow and system integrity on these high-demand generator units.

Key Features

• Genuine OEM Specification — Manufactured to the exact material and thread specification of the original fitting, ensuring a proper seal under the operating pressures found in DCA-series generator plumbing systems.
• Direct-Install Replacement — Matches the original thread pitch, body diameter, and connection geometry so it installs directly into the existing port without modification to adjacent lines or fittings.
• Broad DCA-Series Fitment — Confirmed for DCA-220SSK, DCA400SPK, DCA800SSK, DCA125SSK, and DCA800SSK-GEER ultra-silent and super-silent diesel generator models.
• Leak-Free System Integrity — A correctly seated half union maintains a fluid-tight junction in the generator's plumbing circuit; a worn or cross-threaded fitting risks fluid loss, pressure drop, and potential system contamination.
• Fuel and Fluid System Safety — Proper fitting integrity in a diesel generator's fuel or coolant circuit is critical to safe operation; using the correct OEM-spec component helps prevent hazardous leaks during extended run cycles.

A half union is a two-part threaded connector used to join sections of pipe or tubing within a machine's fluid circuit while allowing the line to be disconnected for service without disturbing the rest of the plumbing. One half threads into a fixed port or component, and the mating half connects to the incoming line, with the two halves coupling together to form a single sealed joint. When this fitting cracks, strips, or develops a compromised seal, the generator's fuel or fluid flow is interrupted, which can lead to leaks, loss of prime, or overheating that takes the unit offline.

For fitment questions or to confirm compatibility with your specific unit, contact the DHS Equipment team for assistance.

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.