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Mazda RX8 Oxygen Sensor Reviews
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Shop Mazda RX8 Replacement Oxygen Sensor

Mazda is a long standing producer of durable and sturdy cars that also feature innovative engineering. The rugged appearance and agile control of Mazda vehicles offer drivers a quick and secure ride. Today's high-end drivers like you understand how to build on to the road performance of their Mazda RX8 by upgrading to high-performance auto parts. Mazda creates vehicles which are optimized for ultimate performance, which means the RX8 simply won't deliver as designed without top-notch OEM and aftermarket auto parts and accessories. Sporty vehicles, including your high-octane Mazda RX8, were meant to be used past their tolerance, and afterwards serviced and maintained. Your Mazda was created using care and craftsmanship; it ought to get new components with a similar high level of value. Superb engine power and engine performance are supported by high-quality components and accessories. If you chose a high-performance vehicle because it had excellent power and performance, insure that decision and buy only the best replacement parts. The Mazda RX8 Oxygen Sensor functions in combination with the car or truck's central processing unit to decide whether or not your air-fuel mix provided to your motor needs to be changed. Your Mazda RX8 Oxygen Sensor monitors the oxygen to gas proportion by evaluating it to provide ideal mileage. Generally installed on the exhaust manifold, your car's Mazda RX8 Oxygen Sensor reports oxygen levels present in the vehicle's exhaust system to the engine computer. No other supplier can give you a better deal on exceptional Mazda parts than we can all week long. No one can give you a better selection of reliable aftermarket parts than we will all year long. To get outstanding satisfaction from your vehicle, you know that good parts make for awesome performance - PartsGeek.com carries the parts you need.

We stock these Oxygen Sensor brands for the Mazda RX8: WalkerDensoBoschNGKDIY Solutions

Oxygen Sensor for Mazda RX8 - Partsgeek

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Review Fitment Notes
Showing 17 of 118 Results
Upstream Walker Oxygen Sensor - for 2004 Mazda RX8 1.3L Rotary FI Naturally Aspirated GAS - 250-54031 Click to Enlarge
Website Reviews
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Part Number: 250-54031
Brand: Walker
Notes: OE -- B1S1
  • Designed to meet or exceed OE specifications in form, fit and function. Global coverage for import and/or domestic applications. Direct fit replacement. Performance meets or exceeds OE performance. Increase fuel economy and lower emissions
Position: Upstream
Condition: New
Shipping Options: Ground
$111.43
(22) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2004 Mazda RX8 1.3L Rotary FI Naturally Aspirated GAS
Downstream Denso Oxygen Sensor - for 2004 Mazda RX8 - 234-4349 Click to Enlarge
5 Stars
Denso 234-4349
Oxygen Sensor
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Part Number: 234-4349
Brand: Denso
Notes: OE Style -- DENSO is the O.E. Manufacturer / Oxygen Sensor
Position: Downstream
Condition: New
Sensor Type: Heated
Shipping Options: Ground
$86.43
(10) In Stock
This Part Fits:
Catalog: B
Vehicle
2004 Mazda RX8
Downstream Denso Oxygen Sensor - for 2005 Mazda RX8 - 234-4349 Click to Enlarge
5 Stars
Denso 234-4349
Oxygen Sensor
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Part Number: 234-4349
Brand: Denso
Notes: OE Style -- DENSO is the O.E. Manufacturer / Oxygen Sensor
Position: Downstream
Condition: New
Sensor Type: Heated
Shipping Options: Ground
$86.43
(10) In Stock
This Part Fits:
Catalog: B
Vehicle
2005 Mazda RX8
Upstream Walker Oxygen Sensor - for 2005 Mazda RX8 1.3L Rotary FI Naturally Aspirated GAS - 250-54031 Click to Enlarge
Website Reviews
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Part Number: 250-54031
Brand: Walker
Notes: OE -- B1S1
  • Designed to meet or exceed OE specifications in form, fit and function. Global coverage for import and/or domestic applications. Direct fit replacement. Performance meets or exceeds OE performance. Increase fuel economy and lower emissions
Position: Upstream
Condition: New
Shipping Options: Ground
$111.43
(22) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2005 Mazda RX8 1.3L Rotary FI Naturally Aspirated GAS
Downstream Walker Oxygen Sensor - for 2004 Mazda RX8 1.3L Rotary FI Naturally Aspirated GAS - 250-24131 Click to Enlarge
Website Reviews
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Part Number: 250-24131
Brand: Walker
Notes: OE -- B1S2
  • Designed to meet or exceed OE specifications in form, fit and function. Global coverage for import and/or domestic applications. Direct fit replacement. Performance meets or exceeds OE performance. Increase fuel economy and lower emissions
Position: Downstream
Condition: New
Shipping Options: Ground
$70.43
(5) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2004 Mazda RX8 1.3L Rotary FI Naturally Aspirated GAS
Downstream Bosch Oxygen Sensor - for 2004 Mazda RX8 1.3L Rotary - 15043 Click to Enlarge
Website Reviews
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Part Number: 15043
Brand: Bosch
Notes: Validated Oxygen Sensor
  • Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
  • Direct Fit includes OE Connector for easy installation
  • Performance meets or exceeds OE specifications
  • True Direct-fit OE connectors and harness
Position: Downstream
Condition: New
Shipping Options: Ground
$90.43
(3) In Stock
This Part Fits:
Catalog: B
Vehicle Engine Transmission
2004 Mazda RX8 1.3L Rotary Automatic
Upstream Walker Oxygen Sensor - for 2004 Mazda RX8 1.3L Rotary FI Naturally Aspirated GAS - 350-64015 Click to Enlarge
Website Reviews
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Part Number: 350-64015
Brand: Walker
Notes: Aftermarket -- B1S1
  • Designed to meet or exceed OE specifications in form, fit and function. Global coverage for import and/or domestic applications. Direct fit replacement. Performance meets or exceeds OE performance. Increase fuel economy and lower emissions
Position: Upstream
Condition: New
Shipping Options: Ground
$116.43
(22) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2004 Mazda RX8 1.3L Rotary FI Naturally Aspirated GAS
Downstream Bosch Oxygen Sensor - for 2004 Mazda RX8 1.3L Rotary - 13595 Click to Enlarge
Website Reviews
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Part Number: 13595
Brand: Bosch
Notes: Validated Oxygen Sensor
  • Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
  • Direct Fit includes OE Connector for easy installation
  • Performance meets or exceeds OE specifications
  • True Direct-fit OE connectors and harness
Position: Downstream
Condition: New
Shipping Options: Ground
$79.43
(3) In Stock
This Part Fits:
Catalog: B
Vehicle Engine Transmission
2004 Mazda RX8 1.3L Rotary Manual
Downstream Walker Oxygen Sensor - for 2005 Mazda RX8 1.3L Rotary FI Naturally Aspirated GAS - 250-24131 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 250-24131
Brand: Walker
Notes: OE -- B1S2
  • Designed to meet or exceed OE specifications in form, fit and function. Global coverage for import and/or domestic applications. Direct fit replacement. Performance meets or exceeds OE performance. Increase fuel economy and lower emissions
Position: Downstream
Condition: New
Shipping Options: Ground
$70.43
(5) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2005 Mazda RX8 1.3L Rotary FI Naturally Aspirated GAS
Downstream Denso Oxygen Sensor - for 2006 Mazda RX8 - 234-4349 Click to Enlarge
5 Stars
Denso 234-4349
Oxygen Sensor
Loading Reviews...
Part Number: 234-4349
Brand: Denso
Notes: OE Style -- DENSO is the O.E. Manufacturer / Oxygen Sensor
Position: Downstream
Condition: New
Sensor Type: Heated
Shipping Options: Ground
$86.43
(10) In Stock
This Part Fits:
Catalog: B
Vehicle
2006 Mazda RX8
Upstream Walker Oxygen Sensor - for 2007 Mazda RX8 1.3L Rotary FI Naturally Aspirated GAS - 250-54031 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 250-54031
Brand: Walker
Notes: OE -- B1S1
  • Designed to meet or exceed OE specifications in form, fit and function. Global coverage for import and/or domestic applications. Direct fit replacement. Performance meets or exceeds OE performance. Increase fuel economy and lower emissions
Position: Upstream
Condition: New
Shipping Options: Ground
$111.43
(22) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2007 Mazda RX8 1.3L Rotary FI Naturally Aspirated GAS
Downstream Denso Oxygen Sensor - for 2009 Mazda RX8 - 234-4278 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 234-4278
Brand: Denso
Notes: OE Style -- DENSO is the O.E. Manufacturer / Oxygen Sensor
Position: Downstream
Condition: New
Sensor Type: Heated
Shipping Options: Ground
$74.43
(1) In Stock
This Part Fits:
Catalog: B
Vehicle Transmission
2009 Mazda RX8 Manual
Downstream Bosch Oxygen Sensor - for 2004 Mazda RX8 1.3L Rotary - 15740 Click to Enlarge
4.8 Stars
Bosch 15740
Oxygen Sensor
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Part Number: 15740
Brand: Bosch
Notes: Universal Oxygen Sensor
  • Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
  • Includes Smart Link Connector, no soldering required
  • No special tools required for installation
  • Seared protection tube due to 100% functional quality test
  • Performance meets or exceeds OE specifications
Position: Downstream
Condition: New
Shipping Options: Ground
$40.43
(60) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2004 Mazda RX8 1.3L Rotary
Downstream Bosch Oxygen Sensor - for 2005 Mazda RX8 1.3L Rotary - 15740 Click to Enlarge
4.8 Stars
Bosch 15740
Oxygen Sensor
Loading Reviews...
Part Number: 15740
Brand: Bosch
Notes: Universal Oxygen Sensor
  • Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
  • Includes Smart Link Connector, no soldering required
  • No special tools required for installation
  • Seared protection tube due to 100% functional quality test
  • Performance meets or exceeds OE specifications
Position: Downstream
Condition: New
Shipping Options: Ground
$40.43
(60) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2005 Mazda RX8 1.3L Rotary
Downstream Denso Oxygen Sensor - for 2004 Mazda RX8 - W0133-1938351 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: W0133-1938351
Brand: Denso
Notes: OE Connector
Detailed Notes: May also be referred to as a Air Fuel Ratio Sensor.
Position: Downstream
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$241.95
Our Price: $149.58
(4) In Stock
This Part Fits:
Catalog: A
Vehicle Transmission
2004 Mazda RX8 Automatic
Downstream NGK Oxygen Sensor - for 2011 Mazda RX8 1.3L Rotary - 22506 Click to Enlarge
Website Reviews
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Part Number: 22506
Brand: NGK
Notes: Direct Fit Oxygen Sensor -- B1S2; OE Equivalent Design
  • NTK oxygen sensors heat up rapidly to meet requirements of the vehicle to improve fuel economy and reduce emissions. NTK's proprietary ceramic element overcoat protects against sensor failure.
  • NTK oxygen sensors are equipped with OEM specified connectors and attaching hardware for easy installation. Dual-coated platinum element to increase longevity and ensure the quickest response time.
  • NTK is constantly improving sensor designs to provide excellent performance and improve resistance to failure. NTK works with their OEM manufacturers through each phase of development from concept to production.
Position: Downstream
Condition: New
Shipping Options: Ground
$108.08
(5) In Stock
This Part Fits:
Catalog: H
Vehicle Engine Transmission
2011 Mazda RX8 1.3L Rotary Automatic
Downstream DIY Solutions Oxygen Sensor - for 2010 Mazda RX8 - EMS00599 Click to Enlarge
Website Reviews
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Part Number: EMS00599
Brand: DIY Solutions
Notes: Oxygen Sensor -- Automatic Transmission; Downstream
  • Quality Tested - built to a strict level of product standards.
  • Direct Fit Replacement
Position: Downstream
Condition: New
Shipping Options: Free Ground Shipping
$89.95
with FREE Shipping
(2) In Stock
This Part Fits:
Catalog: Q
Vehicle Transmission
2010 Mazda RX8 Automatic

Related Fuel Injection Parts

Oxygen Sensors available for the following Mazda RX8 years: 2011, 2010, 2009, 2008, 2007, 2006, 2005, 2004, 11, 10, 09, 08, 07, 06, 05, 04. This part is also sometimes called Mazda RX8 O2 Sensor. We stock oxygen sensor parts for most Mazda models including 3, Miata, MPV, Protege, 6, 626, 5, Protege5, Tribute, Millenia, CX7, MX5 Miata, RX7, B2600, B4000, MX6, B3000, B2300, B2500, CX9, 3 Sport, B2200, CX5, MX3, B2000, 2, 323, 929, CX-3, Navajo and GLC.

Mazda RX8 Oxygen Sensor Reviews
5 of 5
Verified Customer
7/5/13 07:36 AM - USA

The parts I purchased from your company saved me almost $200 from the cost that my local o'reilly's was asking. The parts were shipped very quickly and it was a great deal with the free shipping. Thank you and I will use your company from now on for purchases for my vehicles. - Ticia

- 2004 Mazda RX8 Oxygen Sensor
5 of 5
Verified Customer
10/30/13 10:33 PM - USA

works and fits as described great value. best deal i could find - michaelr

- 2004 Mazda RX8 Oxygen Sensor
5 of 5
Verified Customer
2/15/14 05:22 PM - USA

i have been looking everywhere for oxygen sensors for my car. And I must say that parts geek has the best prices out there. thank you for not only saving me money but getting me the right part!!! - chantel

- 2005 Mazda RX8 Oxygen Sensor
3 of 5
Verified Customer
3/23/14 04:57 PM - USA

I am going to use this site for the first time and i hope they will come through - brad koehler

- 2005 Mazda RX8 Oxygen Sensor
5 of 5
Verified Customer
5/20/14 10:28 AM - USA

Works perfect. Fast shipping. Low prices. Great site! - Great website

- 2005 Mazda RX8 Oxygen Sensor
5 of 5
Verified Customer
5/23/14 01:11 PM - USA

Ordered the 02 censor for my rx8 and I am satisfied with the 3day delivery - Manny

- 2004 Mazda RX8 Oxygen Sensor