Multiquip 8972476180 Oil Separator 4BG1 DCA-70USI

The Multiquip 8972476180 Oil Separator 4BG1 DCA-70USI is a genuine OEM component designed for the DCA70USI ultra-silent diesel generator series. Sourced directly through Multiquip's OEM supply chain, this part meets the exact specifications required by the Isuzu 4BG1 engine fitted to DCA70USI units. Confirmed fitment for DCA70USI generators means you can order with confidence, knowing this separator will install correctly without guesswork or modification. DHS Equipment stocks this part to keep your generator running clean and efficiently between service intervals.

Key Features

• Genuine OEM Crankcase Integrity — Engineered to the exact separation efficiency and pressure tolerances required by the Isuzu 4BG1 engine, maintaining proper blowby gas management throughout the service interval.
• Direct-Fit for DCA70USI Generators — Designed specifically for the DCA70USI ultra-silent diesel generator; slots into the existing crankcase ventilation circuit with no reworking of hose connections or fittings.
• Genuine Multiquip OEM Part — Supplied as an authorized OEM component under part number 8972476180, ensuring the part matches Multiquip and Isuzu production specifications for the 4BG1 engine family.
• Protects Engine Oil from Contamination — A functioning oil separator keeps oil mist out of the intake system; a worn or clogged unit allows carbon buildup and accelerates wear on intake valves, injectors, and seals.
• Supports Scheduled Maintenance Compliance — Replacing this separator at the correct service interval preserves crankcase pressure balance and prevents excessive oil consumption that can mask other engine faults.

The oil separator on the Isuzu 4BG1 engine is responsible for capturing oil mist from crankcase blowby gases before they are recirculated through the intake system. By removing oil droplets from these gases, the separator prevents oil from fouling the intake manifold, intercooler, and combustion chamber, which would otherwise lead to carbon deposits and degraded combustion efficiency. When the separator becomes clogged or its internal element deteriorates, crankcase pressure can rise, oil consumption increases, and the engine may produce excessive smoke — all signs that immediate replacement is needed to protect the 4BG1 engine's long-term health.

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.