Multiquip 8944016800 Oil Cooler Assembly DCA-45USJ 4JG1

The Multiquip 8944016800 is a genuine OEM Oil Cooler Assembly DCA-45USJ 4JG1 designed for the DCA-45USJ ultra-silent diesel generator. As a direct OEM replacement, this assembly is sourced through Multiquip's authorized parts program, ensuring it meets the exact design and material standards of the original component. It is confirmed to fit the DCA-45USJ generator powered by the Isuzu 4JG1 diesel engine. DHS Equipment supplies this part as a stocked OEM replacement to keep your generator back in service fast.

Key Features

• OEM-Grade Thermal Management — Engineered to the same heat-exchange capacity as the original, maintaining safe operating oil temperatures under continuous generator load.
• Direct-Fit Assembly for DCA-45USJ — Matches the original mounting configuration and port dimensions for the Isuzu 4JG1 engine, dropping in without alteration to existing lines or brackets.
• Confirmed Fitment — Verified for the DCA-45USJ ultra-silent diesel generator series; cross-reference part number 8944016800 before ordering.
• Protects Engine from Thermal Damage — A correctly functioning oil cooler keeps viscosity stable and prevents heat-related bearing and seal wear that can lead to costly internal engine damage.
• Fuel System and Engine Safety — Maintaining proper oil temperature is critical on diesel generators running under sustained load; this assembly restores safe operating conditions after cooler failure or damage.

The oil cooler assembly is responsible for regulating engine oil temperature by transferring excess heat from the oil into the engine's coolant circuit. On a diesel generator like the DCA-45USJ, which is designed for extended runtime under load, keeping oil within the correct temperature range is essential to preserving lubrication film strength, protecting internal components, and preventing premature wear. When an oil cooler fails — whether through internal blockage, external damage, or leakage — oil temperatures rise unchecked, accelerating engine wear and risking thermal shutdown or permanent engine damage.

For questions about fitment or to confirm this is the correct part for your machine, contact the DHS Equipment 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.