What are the differences in Vehicle Speed Sensor configurations between the FN4A-EL and FS5A-EL transaxles, and how do you replace the Vehicle Speed Sensors (VSS) and other sensors on Mazda 3?

The FN4A-EL ( 4-speed ) transaxle has two speed sensors an Input Turbine Speed Sensor ( TSS ), mounted on top and a Vehicle Speed Sensor ( VSS ) mounted towards the lower right rear. On the contrary, the FS5A-EL (5-speed) transaxle has three speed sensors: the Intermediate Shaft Speed (ISS) sensor and the TSS at the top, and the VSS is also located at the bottom left rear. Replacement To remove and install the VSS, place the vehicle on jackstands, loosen the engine under-cover, unhook the electrical connector, and detach the mounting bolt to remove the VSS, and discard the old O-ring and use a new one during installation. In other sensors, disconnect the negative battery terminal, battery, battery tray, upper engine cover, electrical connector with the sensor, mounting bolt, and sensor and again discard the old O-ring and replace it with a new one. The single speed sensor is on the top of the manual transaxle.

How to replace Vehicle Speed Sensors in manual and automatic transaxles on Mazda 6?

In the case of the manual transaxle, the Vehicle Speed Sensor (VSS) is located in the upper right corner of the transaxle and above the inner CV joint of the right drive axle. In order to remove it, jack up the vehicle and place it on jack stands and then dislodge the engine cover. Unscrew the VSS and electrical connector to VSS, dismount the mounting bolt, and pull out the VSS. Installation involves the use of a new O-ring that is discarded when old and installation is the reverse of removal. When it comes to the automatic transaxle, all other models (except the AW6A-EL and AY6A-EL or 6-speed) the speed sensors are part of the transaxle assembly and cannot be accessed by the home user. It has three speed sensors which include the Intermediate Shaft Speed (ISS) sensor, the Turbine Shaft Speed (TSS) sensor and the Output Shaft Speed (OSS) sensor. The sensors of the ISS and TSS are positioned on the top of the transaxle, and ISS as the rear, and TSS as the forward one. The OSS sensor appears close to the lower-left rear side of the transaxle. In case of replacement of the OSS sensor, raise the vehicle then place it on jackstands and remove the engine under cover. Unscrew the electrical connector of the sensor, unscrew the mounting bolt and detach the sensor. Replace the old O-ring with a new one at installation, the latter has the reverse sequence as removal.

Genuine Mazda Vehicle Speed Sensors

Wheel Speed Sensor

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17 Vehicle Speed Sensors found

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Mazda Vehicle Speed Sensor Part Number: FP01-21-550
$92.50 MSRP: $123.36
You Save: $30.86 (26%)
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Product Specifications
- Other Name: Generator, Pulse
Fits the following Mazda Models:
- 6 | 2003-2007 | i, Mazdaspeed, S | 4 Cyl 2.3 L GAS, 6 Cyl 3.0 L GAS
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Mazda Vehicle Speed Sensor Part Number: FU2B-21-550
$95.71 MSRP: $127.64
You Save: $31.93 (26%)
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Product Specifications
- Other Name: Generator, Pulse
Fits the following Mazda Models:
- Millenia | 2002 | Base, S | 6 Cyl 2.3 L GAS, 6 Cyl 2.5 L GAS
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Mazda Vehicle Speed Sensor Part Number: FN01-21-550
$132.21 MSRP: $176.32
You Save: $44.11 (26%)
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Product Specifications
- Other Name: Generator, Pulse
Fits the following Mazda Models:
- 6 | 2008 | i, S | 4 Cyl 2.3 L GAS, 6 Cyl 3.0 L GAS
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Mazda Vehicle Speed Sensor Part Number: FN12-21-551A
$138.64 MSRP: $184.88
You Save: $46.24 (26%)
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Product Specifications
- Other Name: Sensor, Speed; Vehicle Speed Sensor
- Replaces: FN11-21-551, FN11-21-551-PT
Fits the following Mazda Models:
- 3 | 2004-2009 | i, Mazdaspeed, S, SP23 | 4 Cyl 2.0 L GAS, 4 Cyl 2.3 L GAS
- 6 | 2008, 2003-2005 | i, S | 4 Cyl 2.3 L GAS, 6 Cyl 3.0 L GAS
- Protege | 1999-2003 | DX, ES, LX, Mazdaspeed, MP3 | 4 Cyl 1.6 L GAS, 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS
- Protege5 | 2002-2003 | Base | 4 Cyl 2.0 L GAS
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Mazda Vehicle Speed Sensor Part Number: F530-17-400
$154.95 MSRP: $206.64
You Save: $51.69 (26%)
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Product Specifications
- Other Name: Gear Set, Driven; Speedometer Sensor
Fits the following Mazda Models:
- MX-3 | 1992-1995 | Base, GS, SE | 4 Cyl 1.6 L GAS, 6 Cyl 1.8 L GAS
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Mazda Speedometer Sensor Part Number: FW50-17-400C
$172.31 MSRP: $229.80
You Save: $57.49 (26%)
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Product Specifications
- Other Name: Gear Set, Driven
- Replaces: FW50-17-400A, FW50-17-400B
Fits the following Mazda Models:
- 626 | 1996-2002 | DX, ES, LX | 4 Cyl 2.0 L GAS
- MX-6 | 1996-1997 | Base | 4 Cyl 2.0 L GAS
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Mazda Speedometer Sensor Part Number: G564-17-400A
$182.76 MSRP: $243.73
You Save: $60.97 (26%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Gear Set, Driven-Speed
Fits the following Mazda Models:
- 3 | 2004-2009 | i, Mazdaspeed, S, SP23 | 4 Cyl 2.0 L GAS, 4 Cyl 2.3 L GAS
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Mazda Vehicle Speed Sensor Part Number: G577-17-400
$192.38 MSRP: $256.56
You Save: $64.18 (26%)
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Product Specifications
- Other Name: Gear Set, Driven; Vehicle Speed Sensor
- Replaces: G560-17-400
Fits the following Mazda Models:
- 626 | 1993-2002 | DX, ES, LX | 4 Cyl 2.0 L GAS, 6 Cyl 2.5 L GAS
- MX-6 | 1993-1997 | Base, LS, M Edition | 4 Cyl 2.0 L GAS, 6 Cyl 2.5 L GAS
- Protege | 2001-2003 | DX, ES, LX, Mazdaspeed, MP3 | 4 Cyl 2.0 L GAS
- Protege5 | 2002-2003 | Base | 4 Cyl 2.0 L GAS
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Mazda Vehicle Speed Sensor Part Number: BV56-21-5H1
$215.55 MSRP: $287.45
You Save: $71.90 (26%)
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Product Specifications
- Other Name: Sensor, Turbine
Fits the following Mazda Models:
- 929 | 1995 | Base | 6 Cyl 3.0 L GAS
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Mazda Vehicle Speed Sensor Part Number: G567-17-400A
$216.29 MSRP: $288.45
You Save: $72.16 (26%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Gear Set, Driven-Speed
Fits the following Mazda Models:
- Millenia | 1995-2001 | Base, L, Millennium Edition, S | 6 Cyl 2.3 L GAS, 6 Cyl 2.5 L GAS
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Mazda Vehicle Speed Sensor Part Number: G570-17-400B
$225.71 MSRP: $301.01
You Save: $75.30 (26%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Gear Set, Driven; Vehicle Speed Sensor
Fits the following Mazda Models:
- 626 | 1993-2002 | DX, ES, LX | 4 Cyl 2.0 L GAS, 6 Cyl 2.5 L GAS
- MX-6 | 1993-1997 | Base, LS, M Edition | 4 Cyl 2.0 L GAS, 6 Cyl 2.5 L GAS
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Mazda Vehicle Speed Sensor Part Number: R505-17-400B
$258.74 MSRP: $345.05
You Save: $86.31 (26%)
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Product Specifications
- Other Name: Gear Set, Driven-23 Teeth
Fits the following Mazda Models:
- RX-7 | 1993-1995 | Base, R1, R2, Touring | 2 Cyl 1.3 L GAS
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Mazda Speedometer Sensor Part Number: F532-17-400A
$250.98 MSRP: $334.70
You Save: $83.72 (26%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Gear Set, Driven-Speed
Fits the following Mazda Models:
- Protege | 1995-2001 | DX, ES, LX | 4 Cyl 1.5 L GAS, 4 Cyl 1.6 L GAS, 4 Cyl 1.8 L GAS
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Mazda Vehicle Speed Sensor Part Number: BV65-17-400
$278.24 MSRP: $371.06
You Save: $92.82 (26%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Gear Set, Driven
Fits the following Mazda Models:
- RX-7 | 1993-1995 | Base, R1, R2, Touring | 2 Cyl 1.3 L GAS
View related parts
Mazda Vehicle Speed Sensor Part Number: G563-17-400
Product Specifications
- Other Name: Gear Set, Driven; Speedometer Sensor
Fits the following Mazda Models:
- MX-3 | 1992-1995 | Base, GS, SE | 4 Cyl 1.6 L GAS, 6 Cyl 1.8 L GAS
View related parts
Mazda Speedometer Sensor Part Number: G565-17-400
Product Specifications
- Other Name: Gear Set, Driven-Speed
Fits the following Mazda Models:
- Protege | 2001-2003 | DX, ES, LX, Mazdaspeed, MP3 | 4 Cyl 2.0 L GAS
- Protege5 | 2002-2003 | Base | 4 Cyl 2.0 L GAS
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Mazda Vehicle Speed Sensor Part Number: GJ5355475A
Product Specifications
- Other Name: Sensor, Speed Meter
Fits the following Mazda Models:
- 626 | 1990-1992 | DX, GT, LE, LX | 4 Cyl 2.2 L GAS
- MX-6 | 1990-1992 | DX, GT, GT 4WS, LE, LX | 4 Cyl 2.2 L GAS

Mazda Vehicle Speed Sensors

Mazda Vehicle Speed Sensors provide real-time wheel rotation information that allows the car to show real-time speed information, improve traction control and smooth the gear change, providing drivers with a confident and responsive driving experience. Mazda has earned a worldwide reputation for combining sporty handling and everyday practicality, from its early rotary favorites to its updated Skyactiv engines that squeeze more energy from every drop of fuel. Its Kodo design language adds flowing lines that imply motion even when at rest, while i-Activsense driver aids, optional all-wheel drive and new mild hybrid systems demonstrate the brand's commitment to safety and efficiency without dulling the fun factor. Fans like the fact that every Mazda feels eager in corners and refined on long trips, a balancing act born of constant pursuit of lightness, stiffness and intuitive controls. Complementing this philosophy, Mazda Vehicle Speed Sensors are located close to each wheel hub and change the mechanical motion of rotation into sharp electrical pulses, which are interpreted by on-board computers in milliseconds. These small devices supply information to the speedometer, engine management, anti-lock brakes and stability programs to ensure that power delivery is appropriate to grip conditions and that braking remains stable on slick pavement. Unlike older passive pickups, modern Vehicle Speed Sensors have integrated electronics that don't decrease in accuracy when walking pace is applied and remain reliable through water, dust and vibration to reinforce Mazda's dedication to durable, smart technology that works silently in every model.

You'll get great performance and real durability when you pick genuine OEM Vehicle Speed Sensors. Mazda builds these using high-quality materials and official factory methods to ensure they hold up mile after mile. You deserve that Mazda reliability without the headache of cheap knockoffs. It is easy to find exactly what you need in our huge inventory of genuine parts. Plus, every OEM part carries a real manufacturer's warranty for your peace of mind. You will love our low prices too. Order today and we will ship your brand-new parts fast. They often reach your door in just a few days.

Mazda Vehicle Speed Sensors Parts and Q&A

Vehicle Speed Sensor
FN12-21-551A
Q: What are the differences in Vehicle Speed Sensor configurations between the FN4A-EL and FS5A-EL transaxles, and how do you replace the Vehicle Speed Sensors (VSS) and other sensors on Mazda 3?
A:
The FN4A-EL ( 4-speed ) transaxle has two speed sensors an Input Turbine Speed Sensor ( TSS ), mounted on top and a Vehicle Speed Sensor ( VSS ) mounted towards the lower right rear. On the contrary, the FS5A-EL (5-speed) transaxle has three speed sensors: the Intermediate Shaft Speed (ISS) sensor and the TSS at the top, and the VSS is also located at the bottom left rear. Replacement To remove and install the VSS, place the vehicle on jackstands, loosen the engine under-cover, unhook the electrical connector, and detach the mounting bolt to remove the VSS, and discard the old O-ring and use a new one during installation. In other sensors, disconnect the negative battery terminal, battery, battery tray, upper engine cover, electrical connector with the sensor, mounting bolt, and sensor and again discard the old O-ring and replace it with a new one. The single speed sensor is on the top of the manual transaxle.
Vehicle Speed Sensor
FN01-21-550
Q: How to replace Vehicle Speed Sensors in manual and automatic transaxles on Mazda 6?
A:
In the case of the manual transaxle, the Vehicle Speed Sensor (VSS) is located in the upper right corner of the transaxle and above the inner CV joint of the right drive axle. In order to remove it, jack up the vehicle and place it on jack stands and then dislodge the engine cover. Unscrew the VSS and electrical connector to VSS, dismount the mounting bolt, and pull out the VSS. Installation involves the use of a new O-ring that is discarded when old and installation is the reverse of removal. When it comes to the automatic transaxle, all other models (except the AW6A-EL and AY6A-EL or 6-speed) the speed sensors are part of the transaxle assembly and cannot be accessed by the home user. It has three speed sensors which include the Intermediate Shaft Speed (ISS) sensor, the Turbine Shaft Speed (TSS) sensor and the Output Shaft Speed (OSS) sensor. The sensors of the ISS and TSS are positioned on the top of the transaxle, and ISS as the rear, and TSS as the forward one. The OSS sensor appears close to the lower-left rear side of the transaxle. In case of replacement of the OSS sensor, raise the vehicle then place it on jackstands and remove the engine under cover. Unscrew the electrical connector of the sensor, unscrew the mounting bolt and detach the sensor. Replace the old O-ring with a new one at installation, the latter has the reverse sequence as removal.