Multiquip TD35042571 Reserve Tank

The Multiquip TD35042571 Reserve Tank is a genuine OEM component designed for the DAW500SA4 diesel arc welder/generator. As a direct OEM replacement, this tank is sourced from Multiquip to meet the exact specifications of the original part, ensuring a correct fit within the cooling system of your DAW500SA4. DHS Equipment stocks this part to keep your machine running at its best with no guesswork on compatibility. Verify your model against part number TD35042571 before ordering to confirm fitment.

Key Features

• Genuine OEM Construction — Manufactured to Multiquip's original specifications, ensuring the correct capacity, port sizing, and material grade for coolant overflow management on the DAW500SA4.
• Direct Bolt-On Replacement — Engineered to mount in the same location and connect to the same coolant overflow hose routing as the original tank, simplifying the swap during maintenance.
• Confirmed DAW500SA4 Fitment — Verified for the Multiquip DAW500SA4 diesel arc welder/generator platform — cross-reference part number TD35042571 with your machine's parts manual to confirm.
• Coolant System Integrity — A properly functioning reserve tank allows the cooling system to expand and contract safely with temperature changes, preventing pressure buildup and protecting the engine from overheating during extended welding or generating operations.
• Thermal Safety Compliance — Maintaining a functional overflow tank prevents coolant loss and guards against dangerously elevated engine temperatures, which is especially critical during continuous-duty generator and welding operation.

The reserve tank — also called a coolant overflow or expansion tank — serves as a holding reservoir for excess coolant displaced from the radiator as engine temperature rises. As the engine cools back down, the system draws that coolant back in, keeping the radiator full and the cooling circuit sealed. When the reserve tank cracks, leaks, or goes missing, coolant is lost to the ground instead of being recirculated, leading to low coolant levels, overheating, and potential engine damage over time.

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.