Multiquip 8971815050 Fuel Injection Pump Housing DCA-45USJ 4JG1

The Multiquip 8971815050 is a genuine OEM Fuel Injection Pump Housing DCA-45USJ 4JG1, designed specifically for the DCA-45USJ ultra-silent diesel generator. As a direct OEM replacement sourced through Multiquip's authorized parts program, this housing is built to match the original component specifications of the Isuzu 4JG1 engine fitted to DCA-45USJ units. If you're servicing a DCA-45USJ and need a confirmed, accurate replacement, the part is the correct part for this application.

Key Features

• Genuine OEM Construction — Manufactured to the original housing dimensions and material grade required by the Isuzu 4JG1 fuel injection system, ensuring correct sealing and fitment within the fuel circuit.
• Direct Application Fit — Engineered as a direct replacement for the DCA-45USJ ultra-silent generator; mounts and aligns to the existing injection pump assembly without rework.
• Confirmed DCA-45USJ Compatibility — Specific to the DCA-45USJ model and its 4JG1 Isuzu diesel engine — verify your model before ordering to ensure correct application.
• Structural Integrity for High-Pressure Fuel Delivery — A correctly dimensioned pump housing maintains the pressure containment and alignment the injection pump needs to meter fuel accurately and sustain consistent generator output.
• Authorized Multiquip OEM Part — Supplied through Multiquip's official parts network, giving you confidence that part number 8971815050 matches the original component your machine was built with.

The fuel injection pump housing is a structural enclosure that holds and supports the internal components of the diesel fuel injection pump. It maintains precise alignment of the pump's internal mechanisms and provides a sealed environment that contains high-pressure fuel during the injection cycle. When the housing is cracked, warped, or worn, it can allow fuel leaks, cause pressure loss within the injection system, and lead to rough running, hard starting, or reduced power output on the generator.

For questions about fitment or to confirm this part is correct for your DCA-45USJ, contact the DHS Equipment parts team before placing your order.

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.