Homeโ€บ Emission Control > Sensorsโ€บ Walker 350-35078 Oxygen Sensor
Part #: 350-35078

Walker 350-35078 Oxygen Sensor

Walker Products Aftermarket, Upstream, Upstream Front, Upstream Left, and Upstream Right
208 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement โ€” Bolt-on fit, no modifications needed
Walker Products Aftermarket, Upstream, Upstream Front, Upstream Left, and Upstream Right
Fitment: BMW and Mercedes-Benz, 1 Series M, 125i, 128i, 130i, 135i, 323i, 325i, 325xi, 328i, 328i xDrive, 328xi, 330i, 330xi, 335i, 335i xDrive, 335is, 335xi, 525i, 525xi, 528i, 528i xDrive, 528xi, 530i, 530xi, C180, C200, C250, C63 AMG, SLK250, X1, X3, X5, and Z4
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Overview of Walker Oxygen Sensor 350-35078

The Walker Products Aftermarket oxygen sensor 350-35078 is designed specifically for select BMW and Mercedes-Benz models. This heated oxygen sensor features a threaded mounting type and a radiused polygon male connector, ensuring precise fit and reliable performance in emission control systems.

  • Heated oxygen sensor for accurate emissions monitoring
  • Specific fit for BMW 1 Series, 3 Series, 5 Series, and Mercedes-Benz C-Class, SLK, X, and AMG models
  • Threaded mounting with 18.0 mm thread diameter
  • 57.6 inches wiring harness length with 5 wires of 20 gauge
  • Radiused polygon male connector for secure electrical connection
  • Overall length of 61.14 inches for proper installation depth

Detailed Product Description

This Walker Products Aftermarket oxygen sensor (part number 350-35078) is engineered to meet the specific requirements of various BMW and Mercedes-Benz vehicles, including the BMW 135i, 328i xDrive, 530xi, and Mercedes-Benz C63 AMG, SLK250, and X5 models. The sensor is heated to provide faster response times and improved fuel efficiency by accurately measuring oxygen levels in the exhaust gases. The 5-wire configuration with 20 gauge wiring ensures reliable signal transmission, while the radiused polygon male connector offers a secure and precise fit. The threaded mounting type with an 18.0 mm diameter allows for straightforward installation in the designated exhaust port.

Applications and Problem Solving

  • Restores proper air-fuel mixture readings for engine control units
  • Helps reduce emissions by providing accurate oxygen level data
  • Addresses issues such as rough idling and poor fuel economy
  • Prevents check engine light triggers related to oxygen sensor faults
  • Improves overall engine performance and emissions compliance

Installation Notes and Tips

Ensure the vehicle is compatible with this specific oxygen sensor by verifying the make and model fitment. The threaded mounting requires proper torque to avoid damage to the sensor or exhaust manifold. Handle the sensor carefully to avoid damaging the wiring harness or connector. The 57.6-inch wiring harness length provides flexibility for routing during installation. It is recommended to use anti-seize compound on the threads to facilitate future removal.

Quality Assurance and Warranty

Walker Products Aftermarket parts are manufactured to meet or exceed OEM specifications for durability and performance. This oxygen sensor undergoes rigorous testing to ensure reliable operation in emission control systems. While specific warranty details are not provided here, Walker typically offers coverage consistent with industry standards for aftermarket emission sensors.

BrandWalker
Part Number350-35078
PositionWalker Products Aftermarket, Upstream, Upstream Front, Upstream Left, and Upstream Right
Wiring Harness Length57.6
Wire Gauge Measurement20
Sensor TypeHeated
Universal Or Specific FitSpecific
Wire Quantity5
Connector ShapeRadiused polygon
Connector GenderMale
Thread Diameter18.0
Overall Length61.14
Mounting TypeThreaded

This part fits 208 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersFuel TypePositionNotes
2016BMWZ43.0LL6GASUpstream FrontCyl 1-3; B1S1; Cil 1-3; Upstream; Front; Walker Products Aftermarket
2016BMWZ43.0LL6GASUpstream FrontCyl 1-3; Cil 1-3; Upstream; Front; B1S1; Walker Products Aftermarket
2016BMWZ43.0LL6GASUpstream FrontCyl 1-3; B1S1; Upstream; Front; Walker Products Aftermarket
2016Mercedes-BenzC63 AMG4.0LV8GASUpstream RightInstall upstream oxygen sensor on the right side.; Walker Products Aftermarket
2016Mercedes-BenzC63 AMG4.0LV8GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2015BMWZ43.0LL6GASUpstream FrontCyl 1-3; B1S1; Cil 1-3; Upstream; Front; Walker Products Aftermarket
2015BMWZ43.0LL6GASUpstream FrontCyl 1-3; Cil 1-3; Upstream; Front; B1S1; Walker Products Aftermarket
2015BMWZ43.0LL6GASUpstream FrontCyl 1-3; B1S1; Upstream; Front; Walker Products Aftermarket
2015Mercedes-BenzC2501.8LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2015Mercedes-BenzC2501.8LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2015Mercedes-BenzSLK2501.8LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2015Mercedes-BenzSLK2501.8LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2014BMWZ4M Sport3.0LL6GASUpstreamCylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2014BMWZ43.0LL6GASUpstreamCylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2014BMWZ4M Sport3.0LL6GASUpstreamCylinders 1-3 upstream oxygen sensor position 1 in bank 1; Walker Products Aftermarket
2014BMWZ43.0LL6GASUpstreamCylinders 1-3 upstream oxygen sensor position 1 in bank 1; Walker Products Aftermarket
2014BMWZ4M Sport3.0LL6GASUpstreamOxygen Sensor for Cylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2014BMWZ43.0LL6GASUpstreamOxygen Sensor for Cylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2014Mercedes-BenzC2001.8LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2014Mercedes-BenzC2001.8LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2014Mercedes-BenzC2501.8LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2014Mercedes-BenzC2501.8LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2014Mercedes-BenzSLK2501.8LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2014Mercedes-BenzSLK2501.8LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2013BMW125i3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2013BMW128i3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2013BMW325i3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2013BMW328i3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2013BMW328i xDrive3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2013BMW335is3.0LL6GASUpstreamCylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2013BMW335is3.0LL6GASUpstreamCylinders 1-3 upstream oxygen sensor position 1 in bank 1; Walker Products Aftermarket
2013BMW335is3.0LL6GASUpstreamOxygen Sensor for Cylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2013BMW530i3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2013BMWZ43.0LL6GASUpstreamCylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2013BMWZ43.0LL6GASUpstreamCylinders 1-3 upstream oxygen sensor position 1 in bank 1; Walker Products Aftermarket
2013BMWZ43.0LL6GASUpstreamOxygen Sensor for Cylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2013Mercedes-BenzC2501.8LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2013Mercedes-BenzC2501.8LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2013Mercedes-BenzSLK2501.8LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2013Mercedes-BenzSLK2501.8LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2012BMW125i3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2012BMW128i3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2012BMW325i3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2012BMW328i3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2012BMW328i xDrive3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2012BMW335is3.0LL6GASUpstreamCylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2012BMW335is3.0LL6GASUpstreamCylinders 1-3 upstream oxygen sensor position 1 in bank 1; Walker Products Aftermarket
2012BMW335is3.0LL6GASUpstreamOxygen Sensor for Cylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2012BMW530i3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2012BMWZ43.0LL6GASUpstreamCylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2012BMWZ43.0LL6GASUpstreamCylinders 1-3 upstream oxygen sensor position 1 in bank 1; Walker Products Aftermarket
2012BMWZ43.0LL6GASUpstreamOxygen Sensor for Cylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2012Mercedes-BenzC1801.8LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2012Mercedes-BenzC1801.8LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2012Mercedes-BenzC2001.8LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2012Mercedes-BenzC2001.8LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2012Mercedes-BenzC2501.8LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2012Mercedes-BenzC2501.8LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2012Mercedes-BenzSLK2501.8LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2012Mercedes-BenzSLK2501.8LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2011BMW1 Series M3.0LL6GASUpstreamCylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2011BMW1 Series M3.0LL6GASUpstreamCylinders 1-3 upstream oxygen sensor position 1 in bank 1; Walker Products Aftermarket
2011BMW1 Series M3.0LL6GASUpstreamOxygen Sensor for Cylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2011BMW125i3.0LL6Upstream FrontOE Replacement
2011BMW128i3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2011BMW323iBase2.5LL6GASUpstreamUpstream oxygen sensor for cylinders 4-6.; Walker Products Aftermarket
2011BMW325i3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2011BMW325i2.5LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2011BMW328i3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2011BMW328i xDrive3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2011BMW335is3.0LL6GASUpstreamCylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2011BMW335is3.0LL6GASUpstreamCylinders 1-3 upstream oxygen sensor position 1 in bank 1; Walker Products Aftermarket
2011BMW335is3.0LL6GASUpstreamOxygen Sensor for Cylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2011BMW528i3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2011BMW528i3.0LL6GASUpstreamUpstream oxygen sensor for cylinders 4-6.; Walker Products Aftermarket
2011BMWX13.0LL6Upstream FrontOE Replacement
2011BMWX32.5LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2011BMWZ43.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2011BMWZ43.0LL6GASUpstreamCylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2011BMWZ43.0LL6GASUpstreamCylinders 1-3 upstream oxygen sensor position 1 in bank 1; Walker Products Aftermarket
2011BMWZ43.0LL6GASUpstreamOxygen Sensor for Cylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2010BMW125i3.0LL6Upstream FrontOE Replacement
2010BMW128i3.0LL6GASUpstream FrontCyl 1-3; Cil 1-3; Upstream; Front; Walker Products Aftermarket
2010BMW128i3.0LL6GASUpstream FrontCyl 1-3; Upstream; Front; Walker Products Aftermarket
2010BMW130i3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2010BMW135i3.0LL6GASUpstream FrontCyl 1-3; B1S1; Cil 1-3; Upstream; Front; Walker Products Aftermarket
2010BMW135i3.0LL6GASUpstream FrontCyl 1-3; Cil 1-3; Upstream; Front; B1S1; Walker Products Aftermarket
2010BMW135i3.0LL6GASUpstream FrontCyl 1-3; B1S1; Upstream; Front; Walker Products Aftermarket
2010BMW323iBase2.5LL6GASUpstreamUpstream oxygen sensor for cylinders 4-6.; Walker Products Aftermarket
2010BMW325i2.5LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2010BMW328i3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2010BMW328i xDrive3.0LL6GASUpstream LeftCyl 1-3; Cil 1-3; Upstream; Left; Walker Products Aftermarket
2010BMW328i xDrive3.0LL6GASUpstream LeftCyl 1-3; Upstream; Left; Walker Products Aftermarket
2010BMW335i3.0LL6GASUpstreamCylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2010BMW335i3.0LL6GASUpstreamCylinders 1-3 upstream oxygen sensor position 1 in bank 1; Walker Products Aftermarket
2010BMW335i3.0LL6GASUpstreamOxygen Sensor for Cylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2010BMW335i xDrive3.0LL6GASUpstreamCylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2010BMW335i xDrive3.0LL6GASUpstreamCylinders 1-3 upstream oxygen sensor position 1 in bank 1; Walker Products Aftermarket
2010BMW335i xDrive3.0LL6GASUpstreamOxygen Sensor for Cylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2010BMW525i2.5LL6Upstream FrontCyl 1-3; OE Replacement
2010BMW528i3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2010BMW528i xDrive3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2010BMW530i3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2010BMWX13.0LL6Upstream FrontOE Replacement
2010BMWX33.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2010BMWX32.5LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2010BMWX53.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2010BMWZ43.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2010BMWZ43.0LL6GASUpstreamCylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2010BMWZ43.0LL6GASUpstreamCylinders 1-3 upstream oxygen sensor position 1 in bank 1; Walker Products Aftermarket
2010BMWZ43.0LL6GASUpstreamOxygen Sensor for Cylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2009BMW125i3.0LL6Upstream FrontOE Replacement
2009BMW128i3.0LL6GASUpstream FrontCyl 1-3; Cil 1-3; Upstream; Front; Walker Products Aftermarket
2009BMW128i3.0LL6GASUpstream FrontCyl 1-3; Upstream; Front; Walker Products Aftermarket
2009BMW130i3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2009BMW135i3.0LL6GASUpstream FrontCyl 1-3; B1S1; Cil 1-3; Upstream; Front; Walker Products Aftermarket
2009BMW135i3.0LL6GASUpstream FrontCyl 1-3; Cil 1-3; Upstream; Front; B1S1; Walker Products Aftermarket
2009BMW135i3.0LL6GASUpstream FrontCyl 1-3; B1S1; Upstream; Front; Walker Products Aftermarket
2009BMW323iBase2.5LL6GASUpstreamUpstream oxygen sensor for cylinders 4-6.; Walker Products Aftermarket
2009BMW325i2.5LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2009BMW328i3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2009BMW328i xDrive3.0LL6GASUpstream LeftCyl 1-3; Cil 1-3; Upstream; Left; Walker Products Aftermarket
2009BMW328i xDrive3.0LL6GASUpstream LeftCyl 1-3; Upstream; Left; Walker Products Aftermarket
2009BMW335i3.0LL6GASUpstreamCylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2009BMW335i3.0LL6GASUpstreamCylinders 1-3 upstream oxygen sensor position 1 in bank 1; Walker Products Aftermarket
2009BMW335i3.0LL6GASUpstreamOxygen Sensor for Cylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2009BMW335i xDrive3.0LL6GASUpstreamCylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2009BMW335i xDrive3.0LL6GASUpstreamCylinders 1-3 upstream oxygen sensor position 1 in bank 1; Walker Products Aftermarket
2009BMW335i xDrive3.0LL6GASUpstreamOxygen Sensor for Cylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2009BMW525i2.5LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2009BMW528i3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2009BMW528i xDrive3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2009BMW530i3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2009BMWX33.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2009BMWX32.5LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2009BMWX53.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2009BMWZ43.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2009BMWZ43.0LL6GASUpstreamCylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2009BMWZ43.0LL6GASUpstreamCylinders 1-3 upstream oxygen sensor position 1 in bank 1; Walker Products Aftermarket
2009BMWZ43.0LL6GASUpstreamOxygen Sensor for Cylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2008BMW125i3.0LL6Upstream FrontOE Replacement
2008BMW128i3.0LL6GASUpstream FrontCyl 1-3; Cil 1-3; Upstream; Front; Walker Products Aftermarket
2008BMW128i3.0LL6GASUpstream FrontCyl 1-3; Upstream; Front; Walker Products Aftermarket
2008BMW130i3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2008BMW135i3.0LL6GASUpstream FrontCyl 1-3; B1S1; Cil 1-3; Upstream; Front; Walker Products Aftermarket
2008BMW135i3.0LL6GASUpstream FrontCyl 1-3; Cil 1-3; Upstream; Front; B1S1; Walker Products Aftermarket
2008BMW135i3.0LL6GASUpstream FrontCyl 1-3; B1S1; Upstream; Front; Walker Products Aftermarket
2008BMW323iBase2.5LL6GASUpstreamUpstream oxygen sensor for cylinders 4-6.; Walker Products Aftermarket
2008BMW325i2.5LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2008BMW328i3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2008BMW328xi3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2008BMW335i3.0LL6GASUpstreamCylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2008BMW335i3.0LL6GASUpstreamCylinders 1-3 upstream oxygen sensor position 1 in bank 1; Walker Products Aftermarket
2008BMW335i3.0LL6GASUpstreamOxygen Sensor for Cylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2008BMW335xi3.0LL6GASUpstreamCylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2008BMW335xi3.0LL6GASUpstreamCylinders 1-3 upstream oxygen sensor position 1 in bank 1; Walker Products Aftermarket
2008BMW335xi3.0LL6GASUpstreamOxygen Sensor for Cylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2008BMW525i2.5LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2008BMW528i3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2008BMW528xi3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2008BMW530i3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2008BMWX33.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2008BMWX32.5LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2008BMWX53.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2008BMWZ43.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2007BMW130i3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2007BMW323iBase2.5LL6GASUpstreamUpstream oxygen sensor for cylinders 4-6.; Walker Products Aftermarket
2007BMW325i2.5LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2007BMW328i3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2007BMW328xi3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2007BMW330i3.0LL6Upstream FrontOE Replacement
2007BMW335i3.0LL6GASUpstreamCylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2007BMW335i3.0LL6GASUpstreamCylinders 1-3 upstream oxygen sensor position 1 in bank 1; Walker Products Aftermarket
2007BMW335i3.0LL6GASUpstreamOxygen Sensor for Cylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2007BMW335xi3.0LL6GASUpstreamCylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2007BMW335xi3.0LL6GASUpstreamCylinders 1-3 upstream oxygen sensor position 1 in bank 1; Walker Products Aftermarket
2007BMW335xi3.0LL6GASUpstreamOxygen Sensor for Cylinders 1-3, Bank 1 Sensor 1, Upstream; Walker Products Aftermarket
2007BMW525i3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2007BMW525i2.5LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2007BMW525xi3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2007BMW530i3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2007BMW530xi3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2007BMWX33.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2007BMWX32.5LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2007BMWX53.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2007BMWZ43.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2006BMW130i3.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2006BMW323iBase2.5LL6GASUpstreamCyl 4-6; From 12/05; Cil 4-6; Del 12/05; Upstream; Cyl 4-6; Walker Products Aftermarket
2006BMW323iBase2.5LL6GASUpstreamCyl 4-6; From 12/05; Upstream; Cyl 4-6; Walker Products Aftermarket
2006BMW325i3.0LL6GASUpstreamCyl 1-3, From 11/2005; Cil 1-3, De 11/2005; Upstream; Cyl 1-3; Walker Products Aftermarket
2006BMW325i2.5LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2006BMW325i3.0LL6GASUpstreamCyl 1-3, From 11/2005; Upstream; Cyl 1-3; Walker Products Aftermarket
2006BMW325xi3.0LL6GASUpstreamCyl 1-3, From 11/2005; Cil 1-3, De 11/2005; Upstream; Cyl 1-3; Walker Products Aftermarket
2006BMW325xi3.0LL6GASUpstreamCyl 1-3, From 11/2005; Upstream; Cyl 1-3; Walker Products Aftermarket
2006BMW330i3.0LL6GASUpstreamCyl 1-3, From 11/2005; Cil 1-3, De 11/2005; Upstream; Cyl 1-3; Walker Products Aftermarket
2006BMW330i3.0LL6GASUpstreamCyl 1-3, From 11/2005; Upstream; Cyl 1-3; Walker Products Aftermarket
2006BMW330xi3.0LL6GASUpstreamCyl 1-3, From 11/2005; Cil 1-3, De 11/2005; Upstream; Cyl 1-3; Walker Products Aftermarket
2006BMW330xi3.0LL6GASUpstreamCyl 1-3, From 11/2005; Upstream; Cyl 1-3; Walker Products Aftermarket
2006BMW525i3.0LL6GASUpstreamCyl 1-3, From 11/2005; Cil 1-3, De 11/2005; Upstream; Cyl 1-3; Walker Products Aftermarket
2006BMW525i2.5LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket
2006BMW525i3.0LL6GASUpstreamCyl 1-3, From 11/2005; Upstream; Cyl 1-3; Walker Products Aftermarket
2006BMW525xi3.0LL6GASUpstreamCyl 1-3, From 11/2005; Cil 1-3, De 11/2005; Upstream; Cyl 1-3; Walker Products Aftermarket
2006BMW525xi3.0LL6GASUpstreamCyl 1-3, From 11/2005; Upstream; Cyl 1-3; Walker Products Aftermarket
2006BMW530i3.0LL6GASUpstreamCyl 1-3, From 11/2005; Cil 1-3, De 11/2005; Upstream; Cyl 1-3; Walker Products Aftermarket
2006BMW530i3.0LL6GASUpstreamCyl 1-3, From 11/2005; Upstream; Cyl 1-3; Walker Products Aftermarket
2006BMW530xi3.0LL6GASUpstreamCyl 1-3, From 11/2005; Cil 1-3, De 11/2005; Upstream; Cyl 1-3; Walker Products Aftermarket
2006BMW530xi3.0LL6GASUpstreamCyl 1-3, From 11/2005; Upstream; Cyl 1-3; Walker Products Aftermarket
2006BMWZ43.0LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products Aftermarket

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.