The Multiquip 9091645140 Idle Spring Washer DCA25USI 4LE2 is a genuine OEM component designed for the DCA25USI ultra-silent diesel generator series. This is a direct OEM replacement sourced from Multiquip, ensuring the washer matches the original specification used at the factory on 4LE2-equipped units. Keeping the correct washer in place on the idle spring assembly is essential to consistent governor and throttle response on the DCA25USI. DHS Equipment supplies this part as a stocked OEM replacement so your generator returns to service without compromise.
Key Features
- Genuine OEM Construction — Manufactured to the exact material thickness and hardness required for the idle spring assembly on 4LE2-powered units, ensuring correct spring seat and load distribution.
- Direct Drop-In Replacement — Engineered to the same bore diameter and outer profile as the original, fitting the idle spring stack on the DCA25USI without rework or shimming.
- Confirmed DCA25USI Fitment — Verified for the DCA25USI ultra-silent diesel generator equipped with the Isuzu 4LE2 engine; use part number 9091645140 to confirm your application.
- Stable Idle Governor Response — A correctly seated idle spring washer maintains consistent spring preload, supporting smooth idle speed regulation and preventing governor hunting under varying load conditions.
- Fuel System Integrity — Wear or loss of this washer alters spring tension in the idle circuit, which can cause erratic idle, rough throttle transition, or difficulty holding target frequency output — making timely replacement critical on generator applications.
The idle spring washer sits within the carburetor or governor idle spring assembly and acts as a precision seat that controls spring compression and alignment. By maintaining the correct preload on the idle spring, it ensures the throttle or governor mechanism responds predictably at low engine speeds. When this washer wears thin, deforms, or goes missing, spring tension becomes inconsistent — leading to unstable idle, fluctuating output frequency, and added stress on surrounding throttle linkage components.
Part Details
| Part Number | 9091645140 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Idle Spring Washer DCA25USI 4LE2 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Diesel Powered Generators | DCA25USI |
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.
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