The Multiquip 8970951672 is a genuine OEM Cylinder Block Assembly DCA-45USJ 4JG1 designed for the Multiquip DCA-45USJ ultra-silent diesel generator. As a factory-sourced component, this assembly matches the exact specifications of the original part, ensuring a correct fit within the 4JG1 engine configuration. It is verified for use on the DCA-45USJ and is available through DHS Equipment as an authorized Multiquip parts source. When the time comes for a major engine overhaul or block-level repair, sourcing the correct OEM assembly is critical to restoring full generator output and long-term dependability.
Key Features
- Genuine OEM Engine Architecture — Sourced directly from Multiquip, this cylinder block is manufactured to the same casting tolerances and material grades as the original 4JG1 engine block, preserving correct bore geometry and structural integrity.
- Direct Application for DCA-45USJ — Engineered specifically for the DCA-45USJ ultra-silent generator series, this block assembly drops into the existing engine bay with correct mounting point alignment and port positioning.
- 4JG1 Engine Compatibility — Matched to the Isuzu 4JG1 powerplant used in the DCA-45USJ, ensuring proper cylinder head mating surfaces, coolant passages, and oil gallery alignment are maintained throughout installation.
- Restored Power Output and Compression — A compromised or cracked cylinder block causes loss of compression, oil contamination, and generator instability. Replacing with this OEM assembly restores rated power delivery and stable AC output.
- Critical for Engine Rebuild Integrity — As the structural foundation of the entire engine, installing a genuine block assembly ensures all ancillary components — pistons, liners, crankshaft — seat and operate as originally designed.
The cylinder block is the core structural component of an internal combustion engine, housing the cylinders, coolant jackets, oil passages, and mounting points for the crankshaft and cylinder head. In the DCA-45USJ ultra-silent generator, the 4JG1 engine block must maintain precise bore dimensions and sealing surfaces to sustain compression, manage heat, and support uninterrupted power generation. When a block is cracked, warped, or worn beyond serviceable limits, the entire engine becomes unreliable — replacing it with a genuine OEM assembly like the Multiquip 8970951672 is the correct path to a full, lasting engine restoration.
Part Details
| Part Number | 8970951672 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Cylinder Block Assembly 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 8971201783 Cylinder Head Assembly DCA-45USJ 4JG1
