We are offering for sale

2x Nut Lock Washer Tabs for Weber Carburetor IDF DCOE DCNF DCO DCNL Spindle Shaft



These nut lock washer tabs secure the spindle shaft nut on compatible Weber carburetors. The tab is positioned against the nut and folded to help prevent the nut from rotating during carburetor operation, supporting reliable throttle-shaft and butterfly-valve adjustment.

Designed for spindle shaft nut locking on Weber carburetor assemblies.]

The tabs are relevant during throttle-shaft service, butterfly-valve adjustment, or carburetor refurbishment. A previously bent, damaged, or reused locking tab may no longer hold the nut securely, allowing adjustment changes or looseness at the spindle hardware. These parts are listed for Weber IDF, DCOE, DCNF, DCO, and DCNL carburetor families; verify the original hardware and locking-tab geometry before installation. MPN: 55520.004-2.

This replacement part is suitable for carburetor service and restoration work where the original component is worn, damaged, or missing.

Reference/MPN: 55520.004-2.

Technical role: Two nut lock washer tabs retain the spindle-shaft nut on compatible Weber IDF, DCOE, DCNF, DCO, and DCNL carburetors.
Service relevance: Applicable during throttle-shaft service, butterfly-valve adjustment, or carburetor refurbishment when the original locking tab is bent, damaged, or reused.

What Is Included



  • 2 nut lock washer tabs for Weber carburetor spindle shaft applications
  • Made in EU.


Important Fitment Note



Verify the carburetor family and any code or marking before purchase. Compare the tab’s center opening, outer profile, locking ear position, and contact interface with the removed washer. Also check the spindle-shaft nut arrangement and the available space for the tab to fold against the nut; thread and seat details belong to the original spindle hardware and must match the replacement application.

Compare the replacement directly with the removed lock washer before installation, especially if the carburetor has been modified or rebuilt.

Why Buy From Us



We are based in the EU. We specialize in carburetor parts and classic performance fuel-system components, with clear product identification and practical support for restoration and repair projects. Parts are carefully prepared to help you get the correct components for your carburetor service.

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2x Nut Lock Washer Tabs for Weber Carburetor IDF DCOE DCNF DCO DCNL Spindle Shaft These nut lock washer tabs secure the spindle shaft nut on compatible Weber carburetors. The tab is positioned against the nut and folded to help prevent the nut from rotating during carburetor operation, supporting reliable throttle-shaft and butterfly-valve adjustment. Designed for spindle shaft nut locking on Weber carburetor assemblies.] The tabs are relevant during throttle-shaft service, butterfly-valve adjustment, or carburetor refurbishment. A previously bent, damaged, or reused locking tab may no longer hold the nut securely, allowing adjustment changes or looseness at the spindle hardware. These parts