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Eaton Fuller Speed Sensor 4308074 Fix Shifting

Bus Spares Parts
December 19, 2025
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Brief: See the journey from feature description to real application in this concise overview. This video demonstrates how the Eaton Fuller Speed Sensor 4308074 fixes shifting problems by showing its installation and the resulting restoration of precise gear changes. Watch as we explain how this high-precision component delivers accurate data to eliminate fault codes and prevent costly vehicle downtime.
Related Product Features:
  • Restores precise automatic shifting by delivering accurate rotational speed data for optimal shift timing.
  • Clears diagnostic fault codes directly, eliminating warning lights and limp mode issues.
  • Engineered for durability to withstand extreme heat, vibration, and transmission fluids.
  • Direct-fit replacement for part number 4308074 with correct electrical connector and mounting points.
  • Provides real-time rotational speed data to the Transmission Control Unit for intelligent gear shifts.
  • Built with robust materials to ensure long service life in harsh commercial vehicle environments.
  • Helps improve fuel efficiency and driving comfort through reliable performance.
  • Prevents erratic shifting and inaccurate speedometer readings when functioning correctly.
FAQs:
  • What is the primary function of the Eaton Fuller Speed Sensor 4308074?
    This sensor is a critical input device that precisely monitors the rotational speed of the transmission output shaft, providing real-time data essential for proper gear shifting, cruise control, and vehicle speed indication.
  • Why is high precision important for this transmission speed sensor?
    High precision ensures the Transmission Control Unit receives a clean, accurate signal for making timely decisions, resulting in smoother shifts, preventing gear hunting, and providing reliable data for other vehicle systems.
  • How can I confirm if PN: 4308074 is the correct sensor for my transmission?
    Verify that PN: 4308074 matches the original part number specified for your Eaton Fuller transmission model and serial number. Consult your transmission manual or a parts specialist for confirmation.
  • What are the consequences of a failing speed sensor?
    A faulty sensor can cause erratic or harsh shifting, inaccurate speedometer readings, loss of cruise control functionality, warning light illumination, and potential transmission limp-home mode activation.
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