01M927321 01M927321A Automatic Transmission Speed Sensor for VW Mk4 Beetle Golf Jetta
| Brand Name: | BOIGEVIS |
| OEM: | 01M927321, 01M927321A |
| Car Model: | For VW Mk4 Beetle Golf Jetta 01M927321 01M 927 321 |
| Product Type: | Speed Sensor |
| Quality Assurance: | 100% Professional Test |
Engineered as a cornerstone of drivetrain precision for Volkswagen’s iconic Mk4 Beetle, Golf, and Jetta models, this Automatic Transmission Speed Sensor (part numbers 01M927321 and 01M927321A) transcends conventional OEM standards. Serving as the nervous system between your vehicle’s transmission and ECU, it delivers nanosecond-level accuracy in measuring output shaft speed, enabling seamless gear transitions, optimal torque management, and adaptive shift scheduling.
Crafted with hermetically sealed circuitry and military-grade magnetoresistive technology, this sensor defies moisture, vibration, and electromagnetic interference—common culprits behind erratic shifting, delayed engagement, or torque converter lockup failures. Its dual-element design (01M927321A featuring enhanced thermal stability) ensures compatibility with both early and revised Mk4 TCU calibrations, while a precision-machined aluminum housing guarantees thermal conductivity 30% superior to standard plastic variants.
Unlike generic replacements, this sensor undergoes triple validation: dynamic load testing at -40°C to 125°C, 10 million-cycle vibration simulation, and real-world dyno verification on VW’s 01M/01N transmission platforms. The result? Elimination of P0500/P0720 speed sensor codes, restoration of factory-like shift quality, and a 25% reduction in transmission wear via proactive slip detection. For enthusiasts chasing OEM+ performance or workshops demanding diagnostic-grade reliability, this sensor isn’t just a replacement—it’s a drivetrain upgrade.
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