Multiquip Y0602015700 Radiator Cap

The Multiquip Y0602015700 Radiator Cap is a genuine OEM Radiator Cap designed for DAW500SA4 and DLW300ES series welders. As a direct OEM replacement, it is manufactured to the exact pressure specifications required by the cooling system on these machines, ensuring a proper seal every time. DHS Equipment sources this cap directly through authorized Multiquip supply channels, so you can order with confidence that you are receiving the correct part for your unit.

Key Features

• Correct Pressure Rating: — Built to the precise pressure relief specification required by the Multiquip cooling system — not a universal cap that may vent too early or hold too long.
• OEM Sealing Performance: — The sealing surfaces and gasket material match original tolerances, preventing coolant loss and maintaining system pressure under sustained load.
• Direct-Fit Replacement: — Designed to thread directly onto the radiator filler neck on DAW500SA4 and DLW300ES welders with no modification to the neck or overflow system.
• Confirmed Fitment: — Verified for DAW500SA4 diesel arc welder and DLW300ES diesel light welder model variants.
• Protects Against Overheating: — A correctly rated cap keeps the coolant system pressurized, raising the boiling point of the coolant and keeping engine temperatures in check during continuous welding operation.

The radiator cap is a pressure-regulating component that seals the cooling system and controls the point at which excess pressure is released into the overflow reservoir. By maintaining the correct system pressure, the cap raises the effective boiling point of the coolant, allowing the engine to run at a stable operating temperature under heavy load. A worn or incorrect cap that fails to hold pressure will cause coolant to boil off prematurely, leading to overheating, coolant loss, and potential engine damage during operation.

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

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.