Multiquip Y0602015700 Radiator Cap

The Multiquip Y0602015700 Radiator Cap is a genuine OEM component designed for DAW500SA4 and DLW300ES series diesel welder/generators. As a direct OEM replacement, it is manufactured to the exact pressure and sealing specifications required by Multiquip, ensuring the cooling system operates within its intended parameters. This cap confirms fitment across DAW500SA4 and DLW300ES, DLW300ESA, and DLW300ESA1 models, making it a straightforward service item for technicians maintaining these machines in the field.

Key Features

• OEM Pressure Rating: — Built to the exact pressure relief specification for these cooling systems, maintaining the correct operating pressure range under load.
• Direct-Fit Sealing: — Engineered to seat flush on the OEM radiator filler neck, delivering a positive seal without modification or adapter hardware.
• Confirmed Fitment: — Verified for DAW500SA4 and DLW300ES series Multiquip diesel welder/generators, including DLW300ESA and DLW300ESA1 variants.
• Cooling System Integrity: — A properly functioning radiator cap holds system pressure and prevents coolant loss; a failed cap causes overheating and can lead to costly engine damage during extended operation.
• Fuel and Fluid Safety: — The pressurized cooling circuit on diesel welder/generators runs at sustained high loads; an OEM-spec cap helps prevent dangerous coolant boilover and maintains safe operating temperatures for operators nearby.

A radiator cap does more than seal the coolant reservoir — it actively regulates pressure within the cooling system. By maintaining the correct pressure, it raises the boiling point of the coolant, allowing the engine to run at a higher and more stable operating temperature without boiling over. When the cap's pressure valve wears out or its sealing gasket deteriorates, the system loses pressure, coolant escapes, and the engine runs hotter than intended — accelerating wear and risking overheating shutdowns on the jobsite.

For questions about fitment or to confirm compatibility with your specific serial number, contact the DHS Equipment parts team before ordering.

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.