Multiquip 1625973512 Water Pump Impeller

The Multiquip 1625973512 Water Pump Impeller is a genuine OEM component designed for DLW400ES, DLW400ESA, and DLW400ESA1 series diesel light welders. As a factory-sourced part, it meets the exact specifications of the original component installed at the time of manufacture, ensuring a correct fit within the engine cooling circuit. This impeller is confirmed for the V1305-E2B engine configuration found in these DLW400ES series machines.

Key Features

• Genuine OEM Impeller Integrity — Manufactured to the precise vane geometry and material spec of the original, maintaining consistent coolant flow volume through the water pump.
• Direct-Fit for DLW400ES Series — Engineered specifically for the V1305-E2B engine, this impeller seats and seals correctly without modification to the pump housing or shaft.
• Confirmed Fitment — Verified for DLW400ES, DLW400ESA, and DLW400ESA1 diesel light welder models under the Multiquip portfolio.
• Sustained Cooling Performance — A properly functioning impeller moves coolant efficiently through the engine; a worn or damaged impeller causes coolant starvation, overheating, and unplanned shutdowns during welding operations.
• Cooling System Safety — In diesel welding equipment, engine overtemperature due to a failed impeller can trigger automatic shutdown or cause internal engine damage — replacing this part proactively is a critical maintenance step.

The water pump impeller is the rotating component inside the engine's coolant pump responsible for drawing coolant through the system and circulating it between the engine block and radiator. It works by converting shaft rotation into fluid movement, keeping engine temperatures within safe operating limits during sustained load. When an impeller wears, cracks, or loses vane material, coolant flow drops sharply — leading to overheating, loss of power, and potential engine damage if the machine continues to operate.

DHS Equipment is an authorized Multiquip parts dealer. For fitment questions or additional support, contact our parts 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.