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Black 2-pin transmission speed sensor rectangular body 12V 52x51.5x25mm

Unique-Bargains

Unique-Bargains FN01-21-550 Black Transmission Speed Sensor 2-Pin 12V

SKU CH-7AT3-X5QMC

A 2-pin 12 V transmission speed sensor with 7 mm mounting hole, OE FN01-21-550, fits Mazda 2, 3, 5, 6, CX-7 and Protege models from 1999 to 2012

  • Restores peak transmission function with direct-fit replacement
  • Accurate readings across drastic temperature changes
  • Durable black shell with two-pin 12 V design
  • Fits Mazda 2, 3, 5, 6, CX-7 and Protege models
  • Compact 52 x 51.5 x 25 mm housing with 7 mm mount hole

Vehicle Transmission Speed Sensor

This Unique-Bargains sensor is a direct replacement part for specific Mazda models. It restores peak transmission function with durable construction and accurate readings. The unit operates on DC 12V and features a two-pin connector for straightforward installation. It is a non-OEM accessory designed to meet or exceed original equipment standards.

Two-Pin 12V Electrical Interface

The sensor uses a two-pin connection and requires a 12-volt DC supply. This electrical specification is the primary factor that determines compatibility with the vehicle wiring harness. Verify that the original part matches this pin count and voltage before purchase. An incorrect interface will prevent proper signal transmission to the transmission control module.

Single Sensor in Package

The package includes one transmission speed sensor with a black shell and a 7 mm installation hole diameter. No additional hardware, wiring pigtails, or software are supplied. Installers must reuse existing mounting bolts or source them separately. The solitary unit replaces the faulty sensor directly without extra components.

How it compares

Measured against everything we stock in Sensors, Transducers & Thermometers, at today’s prices. Recalculated every night.

Price $15.99
Cheaper than about 83% of the 255 comparable items (median $39.99).

Specifications

Product
Brand nameUnique Bargains

Questions about this item

How does the 12 V DC rating affect the signal the sensor sends to the transmission computer?

The sensor runs on the vehicle's 12 V system and produces a speed-proportional signal that the transmission control module uses for shift timing.

What does the 2-pin connector mean for compatibility with the factory wiring harness?

The two-pin plug matches the original equipment connector on listed Mazda models, so it fits without adapters or splicing.

Will the 7 mm mounting hole and 52 × 51.5 × 25 mm body fit the transmission case on a 2004 Mazda 3?

Yes, the 7 mm installation hole and those overall dimensions are designed to match the OEM mounting point on the compatible Mazda applications.

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