The Multiquip 9813517020 Valve Spring is a genuine OEM component designed for DCA-series ultra-silent diesel generators including the DCA25SSIU, DCA25SSI, DCA25SSI2, DCA25SSAI, DCA40SSI, DCA40SSAI, DCA45SSIU2, DCA45SSIU2-FEMA, DCA45SSIU2-GEER, DCA60SSAI, DCA60SSI2, and DCA25SSIU-GEER. Sourced directly from Multiquip, this is an exact OEM replacement that meets the original build specification for the Isuzu engine fitted to these generator models. Verified fitment across the full DCA ultra-silent family means you can order with confidence and get the engine back on spec without guesswork.
Key Features
- OEM Spring Rate Accuracy — Manufactured to the precise tension and free-length specification of the original, ensuring correct valve actuation timing and seating force.
- Drop-In Engine Replacement — Designed to seat directly in the Isuzu engine valve train on DCA-series generators with no rework or shimming required.
- Broad DCA Series Fitment — Compatible with DCA25SSI, DCA25SSIU, DCA40SSI, DCA40SSAI, DCA45SSIU2, DCA60SSAI, DCA60SSI2, and related FEMA and GEER variants.
- Sustained Compression Integrity — A correctly tensioned valve spring holds the valve firmly against its seat under all load conditions, maintaining cylinder compression and consistent power output.
- Genuine Multiquip OEM Part — Identical to the component installed at the factory, protecting the long-term reliability of a generator that may be running in critical standby or continuous-duty applications.
A valve spring holds each intake or exhaust valve closed against its seat when the camshaft lobe is not actively pushing it open. It must return the valve to the fully closed position quickly and consistently with every engine cycle. When a valve spring weakens, cracks, or breaks, the affected valve may not seal completely, causing a loss of cylinder compression, rough running, increased fuel consumption, and in severe cases, engine misfires or hard starting. On a generator set like the DCA ultra-silent series — where consistent output voltage and frequency depend on steady engine speed — a faulty valve spring can lead to unstable power delivery that affects connected equipment.
Part Details
| Part Number | 9813517020 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Valve Spring |
Compatibility & Fitment
| Name | Model |
|---|---|
| Diesel Powered Generators | DCA25SSIU |
| Diesel Powered Generators | DCA25SSI |
| Diesel Powered Generators | DCA25SSI2 |
| Diesel Powered Generators | DCA40SSAI |
| Diesel Powered Generators | DCA45SSIU2 |
| Diesel Powered Generators | DCA40SSI |
| Diesel Powered Generators | DCA25SSAI |
| Diesel Powered Generators | DCA45SSIU2-FEMA |
| Diesel Powered Generators | DCA25SSIU-GEER |
| Diesel Powered Generators | DCA45SSIU2-GEER |
| Diesel Powered Generators | DCA60SSAI |
| Diesel Powered Generators | DCA60SSI2 |
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.
