Multiquip 8973580620 Starter Assembly ECR DCA-70USI 4BG1

The Multiquip 8973580620 is a genuine OEM Starter Assembly ECR DCA-70USI 4BG1 designed for the DCA70USI ultra-silent diesel generator series. Sourced directly from Multiquip, this assembly carries the exact specifications required by the 4BG1 engine platform, ensuring the starter engages and cranks the engine correctly from the first turn of the key. This is the correct OEM replacement for DCA70USI units and installs as a direct swap with no improvisation required. DHS Equipment stocks this part to keep your generator back in service quickly.

Key Features

• Genuine OEM Cranking Integrity — Built to the same torque output and engagement specifications as the original 8973580620 unit, so the starter meshes cleanly with the 4BG1 ring gear under load.
• Direct-Swap Installation — Matches the OEM mounting pattern and electrical connector configuration of the DCA70USI, so the assembly seats and wires up exactly as the original did.
• Confirmed DCA70USI Fitment — Engineered specifically for the DCA70USI ultra-silent generator; verify your unit against model code DCA70USI before ordering.
• Protects Downstream Electrical Components — A correctly spec'd starter draws the appropriate amperage at engagement, protecting the battery, solenoid, and wiring harness from the stress caused by an underperforming or mismatched unit.
• Critical for Reliable Generator Start-Up — A worn or failed starter assembly is the leading cause of no-crank conditions on diesel generators; replacing it with the correct OEM part restores dependable cold and warm starts in demanding field conditions.

The starter assembly is the component responsible for cranking the diesel engine from rest. When the ignition is engaged, the starter motor drives a pinion gear into the engine's ring gear, spinning the crankshaft until the engine reaches firing speed. On the DCA70USI's Isuzu 4BG1 engine, the starter must deliver sufficient torque to overcome the compression of a four-cylinder diesel — a task that demands precise motor output and a properly functioning engagement mechanism. When the starter weakens or fails, the engine will crank slowly, fail to turn over, or not respond at all, leaving the generator unable to produce power until the assembly is replaced.

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.