The Multiquip 8973494161 is a genuine OEM Gasket Head DCA-45USJ 4JG1 designed for the DCA-45USJ ultra-silent diesel generator. As a factory-sourced component, this head gasket is manufactured to the exact tolerances required by the Isuzu 4JG1 engine fitted in the DCA-45USJ, ensuring a correct seal between the cylinder head and engine block. Sourced directly through Multiquip's OEM supply chain, the part is the authorized replacement for this application. If you're servicing a DCA-45USJ unit and need a verified, spec-matched head gasket, this is the correct part.
Key Features
- Engine-Specific Sealing Material — Engineered to match the combustion pressures and thermal cycling of the Isuzu 4JG1 engine, delivering a consistent, leak-free seal at the cylinder head mating surface.
- Genuine OEM Component — Supplied directly through Multiquip's authorized parts program, ensuring this gasket meets the exact specifications of the original engine assembly.
- Direct Fitment for DCA-45USJ — Designed specifically for the DCA-45USJ ultra-silent generator series; bolt pattern, thickness, and bore dimensions match the 4JG1 engine block without adaptation.
- Protects Engine Integrity — A properly seated head gasket maintains compression and prevents coolant or combustion gases from crossing into oil passages, protecting the engine from internal damage during generator operation.
- Critical Safety Compliance — A failed head gasket on a working generator can lead to coolant contamination of engine oil or uncontrolled combustion gas escape; replacing with the correct OEM part restores safe operating conditions.
The head gasket forms the critical seal between the cylinder head and the engine block, containing combustion pressure and preventing coolant or oil from mixing during engine operation. On the Isuzu 4JG1 engine used in the DCA-45USJ generator, a compromised head gasket will cause loss of compression, overheating, white exhaust smoke, or oil contamination — any of which will take the unit out of service. Replacing it with the correct OEM gasket, part 8973494161, restores the engine's sealed combustion environment and gets the generator back to full rated output.
Part Details
| Part Number | 8973494161 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Gasket Head DCA-45USJ 4JG1 |
Compatibility & Fitment
| Name | Model |
|---|---|
| DCA-45USJ | DCA-45USJ |
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.
