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Mazda CX7 Replacement Air Fuel Ratio Sensor Information


Oxygen sensors are common in today's passenger vehicles like your Mazda CX7, with many models now using three or four to provide feedback to the engine control computer regarding the oxygen content of exhaust gases. First utilized in the 1970s, front (or upstream) O2 sensors provide data to the engine computer that allows it to fine-tune the air/fuel mixture being delivered for combustion. As technology has improved, the response of O2 sensors has become better, though they currently are still useful primarily during idle, mild acceleration and at cruising speeds. During heavy acceleration, however, they are basically ignored by the engine control computer, which is why the more accurate AFR, or air fuel ration sensor, came into being.

Your 2007-2012 is equipped with an upstream air fuel ratio sensor that, just like an oxygen sensor, may go bad and require replacement. PartsGeek.com has the exact replacement part you need.


They are available for the following Mazda CX7 years: 2012, 2011, 2010, 2009, 2008, 2007, 12, 11, 10, 09, 08, 07. This part is also sometimes called Mazda CX7 Wide Range Air Fuel Sensors. We stock air fuel ratio sensor parts for most Mazda models including 3, 6, RX8, MX5 Miata, 5 and Tribute.

We stock these Air Fuel Ratio Sensor brands for the Mazda CX7: Denso, NGK and Walker Products.


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(Read reviews)
Sale Price: $96.23
(>35) In Stock
Product SKU: 234-5012
Product Note: OE Style -- O.E. Quality Replacement Sensor
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Ground
Additional Fitment Information: Warehouse: B
Vehicle Engine
• 2007 (07) Mazda CX7 2.3L 4 Cyl 

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(Read reviews)
Sale Price: $92.63

Product SKU: 24356
Product Note: OE Type 5-Wire Wideband A/F Sensor -- Upstream; NTK is Original Equipment
Condition: New

Shipping Options:
Ground
Additional Fitment Information: Warehouse: C
Vehicle Engine
• 2007 (07) Mazda CX7 2.3L 4 Cyl 

Click to Enlarge
(Read reviews)
Sale Price: $96.23
(>35) In Stock
Product SKU: 234-5012
Product Note: OE Style -- O.E. Quality Replacement Sensor
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Ground
Additional Fitment Information: Warehouse: B
Vehicle Engine
• 2008 (08) Mazda CX7 2.3L 4 Cyl 

Click to Enlarge
(Read reviews)
Sale Price: $92.63

Product SKU: 24356
Product Note: OE Type 5-Wire Wideband A/F Sensor -- Upstream; NTK is Original Equipment
Condition: New

Shipping Options:
Ground
Additional Fitment Information: Warehouse: C
Vehicle Engine
• 2008 (08) Mazda CX7 2.3L 4 Cyl 

Click to Enlarge
(Read reviews)
Sale Price: $96.23
(>35) In Stock
Product SKU: 234-5012
Product Note: OE Style -- O.E. Quality Replacement Sensor
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Ground
Additional Fitment Information: Warehouse: B
Vehicle Engine
• 2010 (10) Mazda CX7 2.3L 4 Cyl 

Click to Enlarge
(Read reviews)
Sale Price: $92.63

Product SKU: 24356
Product Note: OE Type 5-Wire Wideband A/F Sensor -- Upstream; NTK is Original Equipment
Condition: New

Shipping Options:
Ground
Additional Fitment Information: Warehouse: C
Vehicle Engine
• 2009 (09) Mazda CX7 2.3L 4 Cyl 

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(Read reviews)
Sale Price: $128.23
with FREE Shipping

Product SKU: 234-5043
Product Note: OE Style -- O.E. Quality Replacement Sensor
Position of Product: Upstream
Condition: New

Shipping Options:
Free Ground Shipping
Additional Fitment Information: Warehouse: B
Vehicle Engine
• 2010 (10) Mazda CX7 2.5L 4 Cyl 

Click to Enlarge
(Read reviews)
Sale Price: $97.63
(5) In Stock
Product SKU: 24363
Product Note: OE Type 5-Wire Wideband A/F Sensor -- Upstream; NTK is Original Equipment
Inventory: In Stock
Condition: New

Shipping Options:
Ground
Additional Fitment Information: Warehouse: C
Vehicle Engine
• 2011 (11) Mazda CX7 2.5L 4 Cyl 

Click to Enlarge
(Read reviews)
Sale Price: $96.23
(>35) In Stock
Product SKU: 234-5012
Product Note: OE Style -- O.E. Quality Replacement Sensor
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Ground
Additional Fitment Information: Warehouse: B
Vehicle Engine
• 2009 (09) Mazda CX7 2.3L 4 Cyl 

Click to Enlarge
(Read reviews)
Sale Price: $108.23
(4) In Stock
Product SKU: 24392
Product Note: OE Type 5-Wire Wideband A/F Sensor -- Upstream; NTK is Original Equipment
Inventory: In Stock
Condition: New

Shipping Options:
Ground
Additional Fitment Information: Warehouse: B
Vehicle Engine
• 2012 (12) Mazda CX7 2.3L 4 Cyl 

Click to Enlarge
(Read reviews)
Retail Price:
$242.13
Sale Price: $183.33
with FREE Shipping
(5) In Stock
Product SKU: W0133-1975165
Product Note: Located in primary Catalyst - (Turbocharger Outlet)
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping or (Overnight and 2-Day Shipping)
Additional Fitment Information: Warehouse: A
Vehicle Engine
• 2011 (11) Mazda CX7 2.3L 4 Cyl 

Click to Enlarge
(Read reviews)
Sale Price: $108.23
(4) In Stock
Product SKU: 24392
Product Note: OE Type 5-Wire Wideband A/F Sensor -- Upstream; NTK is Original Equipment
Inventory: In Stock
Condition: New

Shipping Options:
Ground
Additional Fitment Information: Warehouse: B
Vehicle Engine
• 2010 (10) Mazda CX7 2.3L 4 Cyl 

Click to Enlarge
(Read reviews)
Retail Price:
$242.13
Sale Price: $183.33
with FREE Shipping
(5) In Stock
Product SKU: W0133-1975165
Product Note: Located in primary Catalyst - (Turbocharger Outlet)
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping or (Overnight and 2-Day Shipping)
Additional Fitment Information: Warehouse: A
Vehicle Engine
• 2012 (12) Mazda CX7 2.3L 4 Cyl 

Click to Enlarge
(Read reviews)
Sale Price: $108.23
(4) In Stock
Product SKU: 24392
Product Note: OE Type 5-Wire Wideband A/F Sensor -- Upstream; NTK is Original Equipment
Inventory: In Stock
Condition: New

Shipping Options:
Ground
Additional Fitment Information: Warehouse: B
Vehicle Engine
• 2011 (11) Mazda CX7 2.3L 4 Cyl 

Click to Enlarge
(Read reviews)
Retail Price:
$242.13
Sale Price: $183.33
with FREE Shipping
(5) In Stock
Product SKU: W0133-1975165
Product Note: Located in primary Catalyst - (Turbocharger Outlet)
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping or (Overnight and 2-Day Shipping)
Additional Fitment Information: Warehouse: A
Vehicle Engine
• 2010 (10) Mazda CX7 2.3L 4 Cyl 


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Some of our Customer Reviews
Very Satisfied
Reviewer: maniek

9/24/10 04:43 PM

This is my third purchase with Parts Geek and I will buy from them again and again. Very easy to find what I was looking for. I simply Google for parts and Parts Geek comes always in top 10 results...

Order Date | 9/17/10

Very Satisfied
Reviewer: aur

11/30/08 07:06 PM

Thanks for making my purchase so easy! I received my part days before I expected it. I have already told my friends about your website and how hassle free it is to place and receive an order! Will purchase all my AUDI parts from PartsGeek! I would highly recommend this web site and company to friends

Order Date | 11/23/08



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