The Multiquip 8971766990 Liner Complete Block DCA-45USJ 4JG1 is a genuine OEM cylinder liner assembly designed for the DCA-45USJ ultra-silent generator series. This is a direct OEM replacement sourced through authorized Multiquip supply channels, ensuring the component meets the original engineering specifications for the Isuzu 4JG1 engine powering the DCA-45USJ. DHS Equipment stocks this part to keep your generator operating at peak compression and thermal efficiency. Confirm your model code DCA-45USJ before ordering to ensure a correct application match.
Key Features
- OEM Cylinder Wall Integrity — Genuine Multiquip part manufactured to original bore diameter and surface finish tolerances critical for maintaining compression in the Isuzu 4JG1 engine.
- Direct Engine Replacement — Engineered as a drop-in liner for the 4JG1 engine block, seating into the existing bore without custom machining under standard rebuild conditions.
- Confirmed Fitment for DCA-45USJ — Verified compatible with the DCA-45USJ ultra-silent diesel generator; reference your model code before purchasing.
- Restores Compression and Power Output — A worn or scored liner causes loss of compression, excessive oil consumption, and reduced generator output; replacing with a correctly fitted liner restores full engine performance.
- Emission and Operational Compliance — Using the correct OEM liner maintains proper combustion chamber geometry, supporting the engine's designed emission and fuel consumption ratings on the DCA-45USJ.
A cylinder liner is the precision-machined sleeve that forms the inner wall of each engine cylinder, providing the bore surface against which the piston rings seal and travel. It contains combustion pressure, transfers heat to the engine block's cooling system, and directly determines how well the engine maintains compression. When a liner becomes worn, scored, or cracked, the engine loses compression efficiency, begins consuming oil, and may produce excessive smoke or fail to reach rated power output — all of which are critical concerns in a generator application where consistent output voltage and frequency depend on steady engine performance. Replacing the liner as part of an engine rebuild restores the combustion chamber to its original geometry and extends the service life of the engine.
Part Details
| Part Number | 8971766990 |
|---|---|
| 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
