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NGK 24321 Air / Fuel Ratio Sensor


Brand:	NGK
Part Number:	24321
UPC:	00087295243213
Weight:	0.19 lbs
Condition:	New

Availability:	0 in Stock
	OUT OF STOCK

Product Information

Description:

Get the NGK 24321 Air / Fuel Ratio Sensor for your vehicle. Buy now and secure your purchase online!

Select a vehicle to narrow NGK 24321 Air / Fuel Ratio Sensor fitment info!

Last Updated: 03/31/2024

Years

Vehicle

Per Vehicle

Position

Fit Notes

Fitment Notes

2011

2010

2009

2008

2007

2006

2005

2011

2010

2009

2008

2007

2006

2005

Audi A6 Quattro

4.2L V8 Gas DOHC

1 Upstream Left (Driver)

Direct Fit 5-Wire A/F Sensor
B2S1
OE Equivalent Design

Audi A6 Quattro

4.2L V8 Gas DOHC

Upstream Left (Driver) Direct Fit 5-Wire A/F Sensor
B2S1
OE Equivalent Design

1 Per Vehicle

2011

2010

2009

2008

2007

2006

2005

2011

2010

2009

2008

2007

2006

2005

Audi A6 Quattro

4.2L V8 Gas DOHC

1 Upstream Right (Passenger)

Direct Fit 5-Wire A/F Sensor
B1S1
OE Equivalent Design

Audi A6 Quattro

4.2L V8 Gas DOHC

Upstream Right (Passenger) Direct Fit 5-Wire A/F Sensor
B1S1
OE Equivalent Design

1 Per Vehicle

2007

Audi A8 Quattro

6.0L W12 Gas DOHC

1 Upstream

Direct Fit 5-Wire A/F Sensor
Cyls. 1-3
B1S1
OE Equivalent Design
To Chassis # 4E-7-017 624

Audi A8 Quattro

6.0L W12 Gas DOHC

Upstream Direct Fit 5-Wire A/F Sensor
Cyls. 1-3
B1S1
OE Equivalent Design
To Chassis # 4E-7-017 624

1 Per Vehicle

2007

Audi A8 Quattro

6.0L W12 Gas DOHC

1 Upstream

Direct Fit 5-Wire A/F Sensor
Cyls. 4-6
B2S1
OE Equivalent Design
To Chassis # 4E-7-017 624

Audi A8 Quattro

6.0L W12 Gas DOHC

Upstream Direct Fit 5-Wire A/F Sensor
Cyls. 4-6
B2S1
OE Equivalent Design
To Chassis # 4E-7-017 624

1 Per Vehicle

2006

2005

2006

2005

Audi A8 Quattro

6.0L W12 Gas DOHC

1 Upstream

Direct Fit 5-Wire A/F Sensor
Cyls. 1-3
B1S1
OE Equivalent Design

Audi A8 Quattro

6.0L W12 Gas DOHC

Upstream Direct Fit 5-Wire A/F Sensor
Cyls. 1-3
B1S1
OE Equivalent Design

1 Per Vehicle

2006

2005

2006

2005

Audi A8 Quattro

6.0L W12 Gas DOHC

1 Upstream

Direct Fit 5-Wire A/F Sensor
Cyls. 4-6
B2S1
OE Equivalent Design

Audi A8 Quattro

6.0L W12 Gas DOHC

Upstream Direct Fit 5-Wire A/F Sensor
Cyls. 4-6
B2S1
OE Equivalent Design

1 Per Vehicle

2007

Audi S8

5.2L V10 Gas DOHC

1 Upstream

Direct Fit 5-Wire A/F Sensor
Cyls. 1-3
B1S1
OE Equivalent Design

Audi S8

5.2L V10 Gas DOHC

Upstream Direct Fit 5-Wire A/F Sensor
Cyls. 1-3
B1S1
OE Equivalent Design

1 Per Vehicle

2005

2004

2005

2004

BMW 545i

4.4L V8 Gas DOHC

1 Upstream Left (Driver)

Direct Fit 5-Wire A/F Sensor
OE Equivalent Design
Automatic Transmission

BMW 545i

4.4L V8 Gas DOHC

Upstream Left (Driver) Direct Fit 5-Wire A/F Sensor
OE Equivalent Design
Automatic Transmission

1 Per Vehicle

2005

2004

2005

2004

BMW 545i

4.4L V8 Gas DOHC

1 Upstream Right (Passenger)

Direct Fit 5-Wire A/F Sensor
OE Equivalent Design
Automatic Transmission

BMW 545i

4.4L V8 Gas DOHC

Upstream Right (Passenger) Direct Fit 5-Wire A/F Sensor
OE Equivalent Design
Automatic Transmission

1 Per Vehicle

2005

2004

2005

2004

BMW 645Ci

4.4L V8 Gas DOHC

1 Upstream Left (Driver)

Direct Fit 5-Wire A/F Sensor
B2S1
OE Equivalent Design
Automatic Transmission

BMW 645Ci

4.4L V8 Gas DOHC

Upstream Left (Driver) Direct Fit 5-Wire A/F Sensor
B2S1
OE Equivalent Design
Automatic Transmission

1 Per Vehicle

2005

2004

2005

2004

BMW 645Ci

4.4L V8 Gas DOHC

1 Upstream Right (Passenger)

Direct Fit 5-Wire A/F Sensor
B1S1
OE Equivalent Design
Automatic Transmission

BMW 645Ci

4.4L V8 Gas DOHC

Upstream Right (Passenger) Direct Fit 5-Wire A/F Sensor
B1S1
OE Equivalent Design
Automatic Transmission

1 Per Vehicle

2005

2004

2003

2005

2004

2003

BMW 745i

4.4L V8 Gas DOHC

1 Upstream Left (Driver)

Direct Fit 5-Wire A/F Sensor
B2S1
OE Equivalent Design

BMW 745i

4.4L V8 Gas DOHC

Upstream Left (Driver) Direct Fit 5-Wire A/F Sensor
B2S1
OE Equivalent Design

1 Per Vehicle

2005

2004

2003

2002

2005

2004

2003

2002

BMW 745i

4.4L V8 Gas DOHC

1 Upstream Right (Passenger)

Direct Fit 5-Wire A/F Sensor
B1S1
OE Equivalent Design

BMW 745i

4.4L V8 Gas DOHC

Upstream Right (Passenger) Direct Fit 5-Wire A/F Sensor
B1S1
OE Equivalent Design

1 Per Vehicle

2002

BMW 745i

4.4L V8 Gas DOHC

1 Upstream Left (Driver)

Direct Fit 5-Wire A/F Sensor
B2S1
From 5/02
OE Equivalent Design

BMW 745i

4.4L V8 Gas DOHC

Upstream Left (Driver) Direct Fit 5-Wire A/F Sensor
B2S1
From 5/02
OE Equivalent Design

1 Per Vehicle

2005

2004

2003

2005

2004

2003

BMW 745Li

4.4L V8 Gas DOHC

1 Upstream Left (Driver)

Direct Fit 5-Wire A/F Sensor
B2S1
OE Equivalent Design

BMW 745Li

4.4L V8 Gas DOHC

Upstream Left (Driver) Direct Fit 5-Wire A/F Sensor
B2S1
OE Equivalent Design

1 Per Vehicle

2005

2004

2003

2002

2005

2004

2003

2002

BMW 745Li

4.4L V8 Gas DOHC

1 Upstream Right (Passenger)

Direct Fit 5-Wire A/F Sensor
B1S1
OE Equivalent Design

BMW 745Li

4.4L V8 Gas DOHC

Upstream Right (Passenger) Direct Fit 5-Wire A/F Sensor
B1S1
OE Equivalent Design

1 Per Vehicle

2002

BMW 745Li

4.4L V8 Gas DOHC

1 Upstream Left (Driver)

Direct Fit 5-Wire A/F Sensor
B2S1
From 5/02
OE Equivalent Design

BMW 745Li

4.4L V8 Gas DOHC

Upstream Left (Driver) Direct Fit 5-Wire A/F Sensor
B2S1
From 5/02
OE Equivalent Design

1 Per Vehicle

2006

2005

2004

2006

2005

2004

BMW 760i

6.0L V12 Gas DOHC

1 Upstream Left (Driver)

Direct Fit 5-Wire A/F Sensor
B2S1
OE Equivalent Design

BMW 760i

6.0L V12 Gas DOHC

Upstream Left (Driver) Direct Fit 5-Wire A/F Sensor
B2S1
OE Equivalent Design

1 Per Vehicle

2006

2005

2004

2006

2005

2004

BMW 760i

6.0L V12 Gas DOHC

1 Upstream Right (Passenger)

Direct Fit 5-Wire A/F Sensor
B1S1
OE Equivalent Design

BMW 760i

6.0L V12 Gas DOHC

Upstream Right (Passenger) Direct Fit 5-Wire A/F Sensor
B1S1
OE Equivalent Design

1 Per Vehicle

2006

2005

2004

2003

2006

2005

2004

2003

BMW 760Li

6.0L V12 Gas DOHC

1 Upstream Left (Driver)

Direct Fit 5-Wire A/F Sensor
B2S1
OE Equivalent Design

BMW 760Li

6.0L V12 Gas DOHC

Upstream Left (Driver) Direct Fit 5-Wire A/F Sensor
B2S1
OE Equivalent Design

1 Per Vehicle

2006

2005

2004

2003

2006

2005

2004

2003

BMW 760Li

6.0L V12 Gas DOHC

1 Upstream Right (Passenger)

Direct Fit 5-Wire A/F Sensor
B1S1
OE Equivalent Design

BMW 760Li

6.0L V12 Gas DOHC

Upstream Right (Passenger) Direct Fit 5-Wire A/F Sensor
B1S1
OE Equivalent Design

1 Per Vehicle

2008

2007

2008

2007

BMW Alpina B7

4.4L V8 Gas DOHC Supercharged

1 Upstream Left (Driver)

Direct Fit 5-Wire A/F Sensor
B2S1
OE Equivalent Design

BMW Alpina B7

4.4L V8 Gas DOHC Supercharged

Upstream Left (Driver) Direct Fit 5-Wire A/F Sensor
B2S1
OE Equivalent Design

1 Per Vehicle

2008

2007

2008

2007

BMW Alpina B7

4.4L V8 Gas DOHC Supercharged

1 Upstream Right (Passenger)

Direct Fit 5-Wire A/F Sensor
B1S1
OE Equivalent Design

BMW Alpina B7

4.4L V8 Gas DOHC Supercharged

Upstream Right (Passenger) Direct Fit 5-Wire A/F Sensor
B1S1
OE Equivalent Design

1 Per Vehicle

2006

2005

2006

2005

BMW X5

4.4L V8 Gas DOHC

1 Upstream Left (Driver)

Direct Fit 5-Wire A/F Sensor
B2S1
OE Equivalent Design

BMW X5

4.4L V8 Gas DOHC

Upstream Left (Driver) Direct Fit 5-Wire A/F Sensor
B2S1
OE Equivalent Design

1 Per Vehicle

2006

2005

2004

2006

2005

2004

BMW X5

4.8L V8 Gas DOHC

1 Upstream Left (Driver)

Direct Fit 5-Wire A/F Sensor
B2S1
OE Equivalent Design

BMW X5

4.8L V8 Gas DOHC

Upstream Left (Driver) Direct Fit 5-Wire A/F Sensor
B2S1
OE Equivalent Design

1 Per Vehicle

2004

BMW X5

4.4L V8 Gas DOHC

1 Upstream Left (Driver)

Direct Fit 5-Wire A/F Sensor
B2S1
OE Equivalent Design
Eng: N62

BMW X5

4.4L V8 Gas DOHC

Upstream Left (Driver) Direct Fit 5-Wire A/F Sensor
B2S1
OE Equivalent Design
Eng: N62

1 Per Vehicle

2005

2004

2003

2005

2004

2003

Mercedes-Benz C230

1.8L L4 Gas DOHC Supercharged

1 Upstream

Direct Fit 5-Wire A/F Sensor
B1S1
OE Equivalent Design

Mercedes-Benz C230

1.8L L4 Gas DOHC Supercharged

Upstream Direct Fit 5-Wire A/F Sensor
B1S1
OE Equivalent Design

1 Per Vehicle

2006

2005

2004

2006

2005

2004

Porsche Cayenne

3.2L V6 Gas DOHC

1 Upstream Left (Driver)

Direct Fit 5-Wire A/F Sensor
B2S1
OE Equivalent Design

Porsche Cayenne

3.2L V6 Gas DOHC

Upstream Left (Driver) Direct Fit 5-Wire A/F Sensor
B2S1
OE Equivalent Design

1 Per Vehicle

2006

2005

2004

2006

2005

2004

Porsche Cayenne

3.2L V6 Gas DOHC

1 Upstream Right (Passenger)

Direct Fit 5-Wire A/F Sensor
B1S1
OE Equivalent Design

Porsche Cayenne

3.2L V6 Gas DOHC

Upstream Right (Passenger) Direct Fit 5-Wire A/F Sensor
B1S1
OE Equivalent Design

1 Per Vehicle

2004

2003

2002

2004

2003

2002

Volkswagen Passat

4.0L W8 Gas DOHC

1 Upstream Left (Driver)

Direct Fit 5-Wire A/F Sensor
OE Equivalent Design

Volkswagen Passat

4.0L W8 Gas DOHC

Upstream Left (Driver) Direct Fit 5-Wire A/F Sensor
OE Equivalent Design

1 Per Vehicle

2004

Volkswagen R32

3.2L V6 Gas DOHC

1 Upstream Right (Passenger)

Direct Fit 5-Wire A/F Sensor
B1S1
OE Equivalent Design

Volkswagen R32

3.2L V6 Gas DOHC

Upstream Right (Passenger) Direct Fit 5-Wire A/F Sensor
B1S1
OE Equivalent Design

1 Per Vehicle

2006

2005

2004

2006

2005

2004

Volkswagen Touareg

3.2L V6 Gas DOHC

1 Upstream Left (Driver)

Direct Fit 5-Wire A/F Sensor
B2S1
OE Equivalent Design

Volkswagen Touareg

3.2L V6 Gas DOHC

Upstream Left (Driver) Direct Fit 5-Wire A/F Sensor
B2S1
OE Equivalent Design

1 Per Vehicle

2006

2005

2004

2006

2005

2004

Volkswagen Touareg

3.2L V6 Gas DOHC

1 Upstream Right (Passenger)

Direct Fit 5-Wire A/F Sensor
B1S1
OE Equivalent Design

Volkswagen Touareg

3.2L V6 Gas DOHC

Upstream Right (Passenger) Direct Fit 5-Wire A/F Sensor
B1S1
OE Equivalent Design

1 Per Vehicle

NGK 24321 Air / Fuel Ratio Sensor

Product Information

Description:

Select a vehicle to narrow NGK 24321 Air / Fuel Ratio Sensor fitment info!

Audi A6 Quattro 4.2L V8 Gas DOHC

1

Upstream Left (Driver)

Direct Fit 5-Wire A/F SensorB2S1 OE Equivalent Design

Audi A6 Quattro

4.2L V8 Gas DOHC Upstream Left (Driver) Direct Fit 5-Wire A/F SensorB2S1 OE Equivalent Design 1 Per Vehicle

Audi A6 Quattro 4.2L V8 Gas DOHC

1

Upstream Right (Passenger)

Direct Fit 5-Wire A/F SensorB1S1 OE Equivalent Design

Audi A6 Quattro

4.2L V8 Gas DOHC Upstream Right (Passenger) Direct Fit 5-Wire A/F SensorB1S1 OE Equivalent Design 1 Per Vehicle

Audi A8 Quattro 6.0L W12 Gas DOHC

1

Upstream

Direct Fit 5-Wire A/F SensorCyls. 1-3 B1S1 OE Equivalent DesignTo Chassis # 4E-7-017 624

Audi A8 Quattro

6.0L W12 Gas DOHC Upstream Direct Fit 5-Wire A/F SensorCyls. 1-3 B1S1 OE Equivalent DesignTo Chassis # 4E-7-017 624 1 Per Vehicle

Audi A8 Quattro 6.0L W12 Gas DOHC

1

Upstream

Direct Fit 5-Wire A/F SensorCyls. 4-6 B2S1 OE Equivalent DesignTo Chassis # 4E-7-017 624

Audi A8 Quattro

6.0L W12 Gas DOHC Upstream Direct Fit 5-Wire A/F SensorCyls. 4-6 B2S1 OE Equivalent DesignTo Chassis # 4E-7-017 624 1 Per Vehicle

Audi A8 Quattro 6.0L W12 Gas DOHC

1

Upstream

Direct Fit 5-Wire A/F SensorCyls. 1-3 B1S1 OE Equivalent Design

Audi A8 Quattro

6.0L W12 Gas DOHC Upstream Direct Fit 5-Wire A/F SensorCyls. 1-3 B1S1 OE Equivalent Design 1 Per Vehicle

Audi A8 Quattro 6.0L W12 Gas DOHC

1

Upstream

Direct Fit 5-Wire A/F SensorCyls. 4-6 B2S1 OE Equivalent Design

Audi A8 Quattro

6.0L W12 Gas DOHC Upstream Direct Fit 5-Wire A/F SensorCyls. 4-6 B2S1 OE Equivalent Design 1 Per Vehicle

Audi S8 5.2L V10 Gas DOHC

1

Upstream

Direct Fit 5-Wire A/F SensorCyls. 1-3 B1S1 OE Equivalent Design

Audi S8

5.2L V10 Gas DOHC Upstream Direct Fit 5-Wire A/F SensorCyls. 1-3 B1S1 OE Equivalent Design 1 Per Vehicle

BMW 545i 4.4L V8 Gas DOHC

1

Upstream Left (Driver)

Direct Fit 5-Wire A/F SensorOE Equivalent DesignAutomatic Transmission

BMW 545i

4.4L V8 Gas DOHC Upstream Left (Driver) Direct Fit 5-Wire A/F SensorOE Equivalent DesignAutomatic Transmission 1 Per Vehicle

BMW 545i 4.4L V8 Gas DOHC

1

Upstream Right (Passenger)

Direct Fit 5-Wire A/F SensorOE Equivalent DesignAutomatic Transmission

BMW 545i

4.4L V8 Gas DOHC Upstream Right (Passenger) Direct Fit 5-Wire A/F SensorOE Equivalent DesignAutomatic Transmission 1 Per Vehicle

BMW 645Ci 4.4L V8 Gas DOHC

1

Upstream Left (Driver)

Direct Fit 5-Wire A/F SensorB2S1 OE Equivalent DesignAutomatic Transmission

BMW 645Ci

4.4L V8 Gas DOHC Upstream Left (Driver) Direct Fit 5-Wire A/F SensorB2S1 OE Equivalent DesignAutomatic Transmission 1 Per Vehicle

BMW 645Ci 4.4L V8 Gas DOHC

1

Upstream Right (Passenger)

Direct Fit 5-Wire A/F SensorB1S1 OE Equivalent DesignAutomatic Transmission

BMW 645Ci

4.4L V8 Gas DOHC Upstream Right (Passenger) Direct Fit 5-Wire A/F SensorB1S1 OE Equivalent DesignAutomatic Transmission 1 Per Vehicle

BMW 745i 4.4L V8 Gas DOHC

1

Upstream Left (Driver)

Direct Fit 5-Wire A/F SensorB2S1 OE Equivalent Design

BMW 745i

4.4L V8 Gas DOHC Upstream Left (Driver) Direct Fit 5-Wire A/F SensorB2S1 OE Equivalent Design 1 Per Vehicle

BMW 745i 4.4L V8 Gas DOHC

Audi A6 Quattro

4.2L V8 Gas DOHC

Direct Fit 5-Wire A/F Sensor
B2S1
OE Equivalent Design

4.2L V8 Gas DOHC

Upstream Left (Driver) Direct Fit 5-Wire A/F Sensor
B2S1
OE Equivalent Design

1 Per Vehicle

Audi A6 Quattro

4.2L V8 Gas DOHC

Direct Fit 5-Wire A/F Sensor
B1S1
OE Equivalent Design

4.2L V8 Gas DOHC

Upstream Right (Passenger) Direct Fit 5-Wire A/F Sensor
B1S1
OE Equivalent Design

1 Per Vehicle

Audi A8 Quattro

6.0L W12 Gas DOHC

Direct Fit 5-Wire A/F Sensor
Cyls. 1-3
B1S1
OE Equivalent Design
To Chassis # 4E-7-017 624

6.0L W12 Gas DOHC

Upstream Direct Fit 5-Wire A/F Sensor
Cyls. 1-3
B1S1
OE Equivalent Design
To Chassis # 4E-7-017 624

1 Per Vehicle

Audi A8 Quattro

6.0L W12 Gas DOHC

Direct Fit 5-Wire A/F Sensor
Cyls. 4-6
B2S1
OE Equivalent Design
To Chassis # 4E-7-017 624

6.0L W12 Gas DOHC

Upstream Direct Fit 5-Wire A/F Sensor
Cyls. 4-6
B2S1
OE Equivalent Design
To Chassis # 4E-7-017 624

1 Per Vehicle

Audi A8 Quattro

6.0L W12 Gas DOHC

Direct Fit 5-Wire A/F Sensor
Cyls. 1-3
B1S1
OE Equivalent Design

6.0L W12 Gas DOHC

Upstream Direct Fit 5-Wire A/F Sensor
Cyls. 1-3
B1S1
OE Equivalent Design

1 Per Vehicle

Audi A8 Quattro

6.0L W12 Gas DOHC

Direct Fit 5-Wire A/F Sensor
Cyls. 4-6
B2S1
OE Equivalent Design

6.0L W12 Gas DOHC

Upstream Direct Fit 5-Wire A/F Sensor
Cyls. 4-6
B2S1
OE Equivalent Design

1 Per Vehicle

Audi S8

5.2L V10 Gas DOHC

Direct Fit 5-Wire A/F Sensor
Cyls. 1-3
B1S1
OE Equivalent Design

5.2L V10 Gas DOHC

Upstream Direct Fit 5-Wire A/F Sensor
Cyls. 1-3
B1S1
OE Equivalent Design

1 Per Vehicle

BMW 545i

4.4L V8 Gas DOHC

Direct Fit 5-Wire A/F Sensor
OE Equivalent Design
Automatic Transmission

4.4L V8 Gas DOHC

Upstream Left (Driver) Direct Fit 5-Wire A/F Sensor
OE Equivalent Design
Automatic Transmission

1 Per Vehicle

BMW 545i

4.4L V8 Gas DOHC

Direct Fit 5-Wire A/F Sensor
OE Equivalent Design
Automatic Transmission

4.4L V8 Gas DOHC

Upstream Right (Passenger) Direct Fit 5-Wire A/F Sensor
OE Equivalent Design
Automatic Transmission

1 Per Vehicle

BMW 645Ci

4.4L V8 Gas DOHC

Direct Fit 5-Wire A/F Sensor
B2S1
OE Equivalent Design
Automatic Transmission

4.4L V8 Gas DOHC

Upstream Left (Driver) Direct Fit 5-Wire A/F Sensor
B2S1
OE Equivalent Design
Automatic Transmission

1 Per Vehicle

BMW 645Ci

4.4L V8 Gas DOHC

Direct Fit 5-Wire A/F Sensor
B1S1
OE Equivalent Design
Automatic Transmission

4.4L V8 Gas DOHC

Upstream Right (Passenger) Direct Fit 5-Wire A/F Sensor
B1S1
OE Equivalent Design
Automatic Transmission

1 Per Vehicle

BMW 745i

4.4L V8 Gas DOHC

Direct Fit 5-Wire A/F Sensor
B2S1
OE Equivalent Design

4.4L V8 Gas DOHC

Upstream Left (Driver) Direct Fit 5-Wire A/F Sensor
B2S1
OE Equivalent Design

1 Per Vehicle

BMW 745i

4.4L V8 Gas DOHC