Multiquip 8971160350 Nozzle Shim .50 DCA25USI 4LE2

The Multiquip 8971160350 is a genuine OEM Nozzle Shim.50 DCA25USI 4LE2 designed for the DCA25USI ultra-silent diesel generator series. As a direct OEM replacement, this shim is manufactured to the exact tolerances required to maintain proper fuel injector nozzle positioning within the Isuzu 4LE2 engine. Sourced directly through the Multiquip OEM parts channel, 8971160350 ensures consistent fitment for DCA25USI units without guesswork or modification. If you're performing injector service or a fuel system rebuild on your DCA25USI, this is the correct shim to specify.

Key Features

• Exact Injector Nozzle Clearance: — Manufactured to the precise .50mm thickness specification required for correct fuel injector seating in the Isuzu 4LE2 engine.
• Genuine OEM Part: — Sourced directly from Multiquip's OEM supply chain, ensuring this shim matches the original component installed at the factory.
• Direct Compatibility with DCA25USI: — Confirmed fitment for the DCA25USI ultra-silent diesel generator; no rework or adaptation needed during injector service.
• Critical to Fuel Injection Performance: — Correct shim thickness governs injector protrusion depth, directly affecting fuel atomization, combustion efficiency, and generator output stability.
• Purpose-Built for Isuzu 4LE2 Engine Service: — Designed specifically for the 4LE2 powerplant used in the DCA25USI, making it the correct choice when performing precision injector maintenance or overhaul work.

A nozzle shim is a precision-ground spacer installed beneath the fuel injector nozzle holder in a diesel engine. Its thickness determines exactly how far the injector tip protrudes into the combustion chamber, which directly controls injection pressure and fuel spray pattern. Using a shim of incorrect thickness — even by a fraction of a millimeter — can cause hard starting, uneven power output, increased fuel consumption, or long-term injector and combustion chamber wear. Replacing this shim with the correct OEM specification component during injector service is essential to restoring proper engine performance on the DCA25USI generator.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

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Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.