The Multiquip 8941337312 Seat Spring DCA-45USJ 4JG1 is a genuine OEM component designed for the DCA-45USJ ultra-silent diesel generator. Sourced directly from Multiquip, this seat spring is built to the exact specifications of the original part, ensuring a correct fit within the Isuzu 4JG1 engine assembly. Verified for use on the DCA-45USJ, this is the right part for technicians and operators looking to restore the engine to proper working condition.
Key Features
- OEM-Spec Valve Seat Retention — Manufactured to the original Isuzu 4JG1 engine tolerances, delivering the correct spring tension and seating load for proper valve operation.
- Direct Engine Replacement — Engineered to install directly into the 4JG1 engine's valve assembly without alteration, maintaining correct valve timing and sealing.
- Confirmed DCA-45USJ Fitment — Specifically matched to the Multiquip DCA-45USJ ultra-silent generator platform for confident, accurate ordering.
- Sustained Engine Output — A properly functioning seat spring keeps valve seating consistent, supporting steady combustion and stable generator power delivery.
- Genuine Multiquip OEM Quality — Part 8941337312 is an authentic Multiquip replacement, backed by OEM sourcing standards for critical internal engine components.
A seat spring is a precision internal engine component that holds a valve firmly against its seat when the valve is in the closed position. In the Isuzu 4JG1 engine powering the DCA-45USJ, the seat spring ensures each intake and exhaust valve seals completely during the compression and power strokes, which is essential for maintaining combustion efficiency and consistent engine output. When a seat spring weakens, cracks, or fails, valve sealing is compromised — leading to compression loss, rough running, increased fuel consumption, or engine damage over time.
Part Details
| Part Number | 8941337312 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Seat Spring 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.
