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Sensor Tap M12 x 1.25 - Mueller - Kueps

Part #: 506 512

The Mueller-Kueps 506 512 Sensor Tap M12 x 1.25 is a professional-grade tool engineered for precision thread restoration in automotive and industrial applications. This specialized tap effectively repairs damaged or corroded sensor threads, particularly for NOX and oxygen sensors, without compromising the surrounding exhaust system. Its innovative design ensures accuracy and extends the life of critical components, making it an indispensable asset for professional technicians.

Key Features

  • Integrated Guide Pin: Features a unique integrated guide pin that prevents angled insertion, ensuring a perfectly straight and precise re-threading process every time. This saves valuable time and prevents further damage to the NOX sensor hole.
  • M12 x 1.25 Thread Specification: Specifically designed for M12 x 1.25 threads, commonly found on NOX sensors, temperature sensors, and particle filters, offering a perfect fit for these critical components.
  • Extra Short Design: The super-short design allows for easy access and effective operation in confined spaces within engine bays and exhaust systems, facilitating in-situ repairs.
  • Durable Construction: Manufactured with robust steel strength, a double coating, and six cutting edges, this tap is built to efficiently cut through heat-tempered steel for reliable and professional thread restoration.
  • Cost and Time Efficient: Enables technicians to restore damaged NOX sensor threads instead of requiring an expensive sensor replacement, significantly reducing repair costs and vehicle downtime.

Applications

This Mueller-Kueps sensor tap is ideal for restoring damaged threads on various exhaust sensors in professional automotive workshops and industrial settings. It is universally applicable for repairing NOX sensor hole threads, exhaust temperature sensor threads, and lambda (oxygen) sensor threads. Designed for use on both light and heavy-duty diesel engines, it provides a fast and professional solution for in-situ exhaust repairs, eliminating the need to remove or replace the entire exhaust system.

Only 1 left in stock - order soon
List: $162.21 Save: $35.09

$127.12

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  • Model: 439650
  • Shipping Weight: 0.08lbs
  • UPC: 4260477559524
  • Manufacturers Part #: 506 512
  • Manufactured by: Mueller - Kueps
  • Also Known As: MLK506512, MU506512

This product was added to our catalog on Friday 29 May, 2026.

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