The Multiquip 8944570081 is a genuine OEM Piston Pin DCA-45USJ 4JG1 designed for the DCA-45USJ ultra-silent generator. As a direct OEM component, this piston pin is manufactured to the exact material and dimensional tolerances required by the Isuzu 4JG1 engine fitted in the DCA-45USJ. Sourced directly through Multiquip's authorized parts network, 8944570081 delivers the correct specification fit without guesswork. If you're overhauling or rebuilding the 4JG1 engine in your DCA-45USJ, this is the correct part for the job.
Key Features
- OEM Material Tolerance — Manufactured to the precise hardness and diameter spec of the Isuzu 4JG1 engine, ensuring correct wrist pin clearance and piston-to-rod alignment.
- Direct Engine Application — Engineered specifically for the 4JG1 engine assembly; drops into the piston and connecting rod bore as a direct replacement with no re-machining required.
- Confirmed Fitment — Compatible with the DCA-45USJ ultra-silent generator series, making it straightforward to source the right pin for this specific engine configuration.
- Engine Integrity at Rebuild — A correctly sized piston pin maintains proper combustion forces through the connecting rod, supporting smooth engine operation and long-term compression consistency.
- Genuine Multiquip OEM Part — Supplied as an authentic Multiquip replacement component, giving you confidence that this part meets the same specification as the original factory-installed pin.
The piston pin — also called a wrist pin — connects the piston to the small end of the connecting rod inside the engine cylinder. It acts as the pivot point that transfers combustion force from the piston down through the connecting rod to the crankshaft. A worn or undersized piston pin causes excessive play between the piston and rod, leading to knocking, accelerated bore wear, and eventual loss of engine power or compression. Replacing it with a correctly dimensioned OEM pin restores proper mechanical clearance and protects the surrounding engine components during and after rebuild.
Part Details
| Part Number | 8944570081 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Piston Pin 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.
