Multiquip 0603300285 Bulkhead Locknut

The Multiquip 0603300285 is a genuine OEM Bulkhead Locknut designed for the DCA series of Super-Silent and Ultra-Silent diesel generators, covering a wide range of models including DCA25, DCA45, DCA70, DCA125, DCA150, DCA180, DCA220, DCA300, and DCA400 variants. As a direct OEM replacement, this part is sourced from Multiquip to ensure it meets the original design and dimensional specifications of the generator it serves. DHS Equipment stocks this part to help you keep your Multiquip DCA generator operating without unnecessary delays. Verify your model code against the fitment list to confirm compatibility before ordering.

Key Features

• Genuine OEM Construction — Manufactured to Multiquip's original dimensional and material specifications, ensuring the locknut seats and torques correctly within the generator enclosure or panel assembly.
• Direct Drop-In Replacement — Engineered to match the original thread pitch and seating profile of the bulkhead fitting it secures, allowing straightforward installation without rework or shimming.
• Broad DCA Series Compatibility — Fits an extensive range of DCA Super-Silent, Ultra-Silent, and diesel generator models from the DCA20 through DCA400 families, including Tier 4 Final variants.
• Secure Bulkhead Sealing — A properly torqued bulkhead locknut maintains a tight, leak-free connection at the panel or enclosure penetration point, preventing fluid or wiring ingress issues that can compromise generator performance.
• Electrical and Fuel System Integrity — Correct clamping force from a sound locknut is critical to maintaining conduit or fuel line routing integrity; a loose or damaged locknut can allow movement, vibration wear, or moisture entry.

A bulkhead locknut is the threaded fastener that clamps a fitting, conduit connector, or tube adapter securely through a panel wall or enclosure surface. It threads onto the fitting from the opposite side of the panel, drawing the fitting tight against the hole to create a stable, sealed connection. When a bulkhead locknut becomes stripped, corroded, or loses its clamping torque, the fitting it secures can shift or loosen, leading to vibration damage, fluid leaks, or exposed wiring — all of which can take a generator offline and require more extensive repairs.

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.