The Multiquip 8971767040 is a genuine OEM Liner Complete Block DCA-45USJ 4JG1 designed for the DCA-45USJ ultra-silent diesel generator. Sourced directly from Multiquip, this cylinder liner assembly is manufactured to the same standards as the original component installed at the factory. It is confirmed to fit the DCA-45USJ, which runs the Isuzu 4JG1 diesel engine, making this the correct liner assembly for that engine family. When it's time for an engine overhaul or liner replacement, using the correct OEM part ensures the bore geometry, material grade, and sealing surfaces are right for the application.
Key Features
- OEM Cylinder Bore Integrity — Manufactured to the exact bore diameter and surface finish required by the Isuzu 4JG1 engine, ensuring proper compression and oil control from the first start.
- Direct Drop-In Replacement — Engineered to install in the same position as the original liner, with correct flange height and interference fit for the DCA-45USJ engine block.
- Confirmed Fitment for DCA-45USJ — Specific to the DCA-45USJ ultra-silent generator platform and its 4JG1 engine; cross-reference part number 8971767040 before ordering.
- Engine Compression Restored — A worn or scored liner causes loss of compression, increased oil consumption, and hard starting; replacing with a correct OEM liner restores full engine output and efficiency.
- Genuine Multiquip OEM Quality — Supplied as an authentic Multiquip replacement component, ensuring material hardness and surface finish meet the demands of continuous generator operation.
A cylinder liner is a precision-machined sleeve fitted inside the engine block that forms the working surface of the combustion chamber. The piston rings ride against the liner wall throughout every power stroke, making liner condition critical to maintaining compression pressure, controlling oil consumption, and delivering full engine output. Over time, liner walls wear, score, or develop micro-cracks that allow combustion gases to bypass the piston rings — a condition known as blow-by — which reduces power, increases fuel consumption, and can contaminate engine oil. Replacing the liner with a correct OEM unit restores the cylinder bore to proper specification and gives the engine a reliable foundation for continued service.
For fitment questions or help confirming this part is right for your DCA-45USJ, contact the DHS Equipment parts team before ordering.
Part Details
| Part Number | 8971767040 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Liner Complete Block 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.
Multiquip
Multiquip 8970951672 Cylinder Block Assembly DCA-45USJ 4JG1
