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Get affordable Buick Rainier oxygen sensors you deserve. In just 10 minutes, you could save up to 80% with PartsGeek. Save time and dollars on your next Rainier o2 sensors purchase. Over 12 Years of saving people money and providing great customer service. Check our low-cost options today. The average cost for oxygen sensor replacement is between $25.98 and $75.08

Buick Rainier Oxygen Sensor Reviews
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Shop Buick Rainier Replacement Oxygen Sensor

Search our online oxygen sensor catalog and find the lowest priced discount auto parts on the web. We sell wholesale to the public. We offer high quality new, OEM, aftermarket and remanufactured Buick Rainier Oxygen Sensor parts. We specialize in a wide-variety of high-quality car parts and accessories for your car, truck or SUV. Call toll free to order or place your order online via our secure checkout system. Our online parts catalog uses real-time inventory, so you can be assured the parts you buy are in stock at the time of ordering. Most orders are shipped the same day.

We stock these Oxygen Sensor brands for the Buick Rainier: ReplacementBoschDensoWalker ProductsDIY SolutionsDelphiNTKNGKAC DelcoAPIStandard Motor Products

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Review Fitment Notes
Showing 20 of 259 Results
Replacement Oxygen Sensor - for 2004 Buick Rainier 4.2L 6 Cyl - 903-050 Click to Enlarge
4.3 Stars
Replacement 903-050
Oxygen Sensor
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Part Number: 903-050
Brand: Replacement
Notes: OE Style -- 4 Wire; Direct Fit; Correct Connector; No cutting or splicing; Correct wire length (22.8 inches or 580mm)
Product Remark: O2 OXYGEN SENSOR
Condition: New
Shipping Options: Free Ground Shipping
$32.95
with FREE Shipping
(43) In Stock
This Part Fits:
Catalog: E
Vehicle Engine Position
2004 Buick Rainier 4.2L 6 Cyl Downstream
Replacement Oxygen Sensor - for 2004 Buick Rainier 5.3L V8 - 903-037 Click to Enlarge
5 Stars
Replacement 903-037
Oxygen Sensor
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Part Number: 903-037
Brand: Replacement
Notes: Oxygen Sensor -- 4 Wire; Direct Fit; Correct Connector; No cutting or splicing; Correct wire length (15.7 Inches or 400mm)
Product Remark: O2 OXYGEN SENSOR
Condition: New
Shipping Options: Free Ground Shipping
$30.95
with FREE Shipping
(76) In Stock
This Part Fits:
Catalog: E
Vehicle Engine Position
2004 Buick Rainier 5.3L V8 Upstream
Upstream Bosch Oxygen Sensor - for 2004 Buick Rainier 5.3L V8 - 15896 Click to Enlarge
5 Stars
Bosch 15896
Oxygen Sensor
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Part Number: 15896
Brand: Bosch
Notes: Engineered 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: Upstream
Condition: New
Shipping Options: Ground
$33.43
(83) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2004 Buick Rainier 5.3L V8
Upstream Denso Oxygen Sensor - for 2004 Buick Rainier - 234-4650 Click to Enlarge
4.9 Stars
Denso 234-4650
Oxygen Sensor
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Part Number: 234-4650
Brand: Denso
Notes: OE Style -- O.E. Quality Replacement Sensor
  • Designed to detect the amount of oxygen in the exhaust system
  • Constructed from high quality material
  • Features double protection layer, aluminum oxide trap layer, PTFE filter and stainless steel housing
  • Manufactured with precision to meet OE standards
  • Easy installation
Position: Upstream
Condition: New
Sensor Type: Heated
Shipping Options: Ground
$33.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle
2004 Buick Rainier
Downstream Denso Oxygen Sensor - for 2005 Buick Rainier - 234-4651 Click to Enlarge
5 Stars
Denso 234-4651
Oxygen Sensor
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Part Number: 234-4651
Brand: Denso
Notes: OE Style -- O.E. Quality Replacement Sensor
Position: Downstream
Condition: New
Sensor Type: Heated
Shipping Options: Ground
$41.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle
2005 Buick Rainier
Downstream Walker Products Oxygen Sensor - for 2006 Buick Rainier 4.2L 6 Cyl - W0133-1894007 Click to Enlarge
Website Reviews
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Part Number: W0133-1894007
Brand: Walker Products
Notes: OE Connector
Position: Downstream
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$114.85
Our Price: $53.58
(1) In Stock
This Part Fits:
Catalog: A
Vehicle Engine
2006 Buick Rainier 4.2L 6 Cyl
Upstream Denso Oxygen Sensor - for 2005 Buick Rainier - 234-4668 Click to Enlarge
4.9 Stars
Denso 234-4668
Oxygen Sensor
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Part Number: 234-4668
Brand: Denso
Notes: OE Style -- DENSO is the O.E. Manufacturer / Oxygen Sensor
Position: Upstream
Condition: New
Sensor Type: Heated
Shipping Options: Ground
$31.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle
2005 Buick Rainier
Downstream DIY Solutions Oxygen Sensor - for 2006 Buick Rainier 4.2L 6 Cyl - EMS00323 Click to Enlarge
Website Reviews
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Part Number: EMS00323
Brand: DIY Solutions
Notes: Oxygen Sensor -- L6 4.2L; Downstream
Position: Downstream
Condition: New
Shipping Options: Free Ground Shipping
$43.95
with FREE Shipping
View Details
This Part Fits:
Catalog: Q
Vehicle Engine
2006 Buick Rainier 4.2L 6 Cyl
Front Delphi Oxygen Sensor - for 2004 Buick Rainier 5.3L V8 - ES20095 Click to Enlarge
Website Reviews
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Part Number: ES20095
Brand: Delphi
Notes: Oxygen Sensor -- 24in Length
  • 100 years of OE experience, supplier to the world's top automakers, OE Heritage and knowledge built into every aftermarket part.
  • Smart design consolidates SKUs without using long wires
  • Delphi planar technology covers older, conical design sensors
  • Patented protective sensor coating helps prevent contamination
  • OE tested to 150,000 miles, plus 2,000 hours severe thermal testing
  • Validated for all fuel types, including ethanol blends like E85
  • Delphi is a global OE manufacturer for oxygen sensor and all oxygen sensors are built to Delphi's OE standards
Position: Front
Condition: New
Position(s): Front, Front Right, Rear, Rear Left. For the position specific to your vehicle, refer to the Application tab.
Shipping Options: Ground
$55.43
(87) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2004 Buick Rainier 5.3L V8
Upstream Walker Products Oxygen Sensor - for 2004 Buick Rainier 4.2L 6 Cyl - W0133-1894506 Click to Enlarge
5 Stars
Walker Products W0133-1894506
Oxygen Sensor
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Part Number: W0133-1894506
Brand: Walker Products
Notes: OE Connector
Position: Upstream
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$106.49
Our Price: $71.58
(2) In Stock
This Part Fits:
Catalog: A
Vehicle Engine
2004 Buick Rainier 4.2L 6 Cyl
Upstream Denso Oxygen Sensor - for 2004 Buick Rainier - 234-4119 Click to Enlarge
5 Stars
Denso 234-4119
Oxygen Sensor
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Part Number: 234-4119
Brand: Denso
Notes: OE Style -- O.E. Quality Replacement Sensor
Position: Upstream
Condition: New
Sensor Type: Heated
Shipping Options: Ground
$39.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle
2004 Buick Rainier
Downstream Denso Oxygen Sensor - for 2004 Buick Rainier - 234-4647 Click to Enlarge
5 Stars
Denso 234-4647
Oxygen Sensor
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Part Number: 234-4647
Brand: Denso
Notes: OE Style -- O.E. Quality Replacement Sensor
Position: Downstream
Condition: New
Sensor Type: Heated
Shipping Options: Ground
$35.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle
2004 Buick Rainier
Upstream Bosch Oxygen Sensor - for 2006 Buick Rainier 5.3L V8 - 15128 Click to Enlarge
5 Stars
Bosch 15128
Oxygen Sensor
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Part Number: 15128
Brand: Bosch
Notes: Engineered 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: Upstream
Condition: New
Shipping Options: Ground
$37.43
(39) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2006 Buick Rainier 5.3L V8
Downstream NTK Oxygen Sensor - for 2004 Buick Rainier 4.2L 6 Cyl - W0133-1843334 Click to Enlarge
Website Reviews
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Part Number: W0133-1843334
Brand: NTK
Notes: OE Connector
Product Remark: OE Type
Position: Downstream
Condition: New
Shipping Options: Ground, Overnight, 2 Day
OEM
List Price:
$111.42
Our Price: $61.58
(15) In Stock
This Part Fits:
Catalog: A
Vehicle Engine
2004 Buick Rainier 4.2L 6 Cyl
Rear Delphi Oxygen Sensor - for 2004 Buick Rainier CXL 4.2L 6 Cyl Naturally Aspirated GAS - ES20113 Click to Enlarge
Website Reviews
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Part Number: ES20113
Brand: Delphi
Notes: Oxygen Sensor -- 9in Length
  • 100 years of OE experience, supplier to the world's top automakers, OE Heritage and knowledge built into every aftermarket part.
  • Smart design consolidates SKUs without using long wires
  • Delphi planar technology covers older, conical design sensors
  • Patented protective sensor coating helps prevent contamination
  • OE tested to 150,000 miles, plus 2,000 hours severe thermal testing
  • Validated for all fuel types, including ethanol blends like E85
  • Delphi is a global OE manufacturer for oxygen sensor and all oxygen sensors are built to Delphi's OE standards
Position: Rear
Condition: New
Position(s): Front, Front Left, Front Right, Rear, Rear Left, Rear Right. For the position specific to your vehicle, refer to the Application tab.
Shipping Options: Ground
$46.43
(99) In Stock
This Part Fits:
Catalog: B
Vehicle Sub Model Engine
2004 Buick Rainier CXL 4.2L 6 Cyl Naturally Aspirated GAS
Downstream NGK Oxygen Sensor - for 2005 Buick Rainier 4.2L 6 Cyl - 21044 Click to Enlarge
5 Stars
NGK 21044
Oxygen Sensor
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Part Number: 21044
Brand: NGK
Notes: Direct Fit Oxygen Sensor -- B1S2; OE Manufacturer: NTK
  • 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.
  • 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 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.
Position: Downstream
Condition: New
Shipping Options: Ground
$25.98
(7) In Stock
This Part Fits:
Catalog: F
Vehicle Engine
2005 Buick Rainier 4.2L 6 Cyl
Downstream Bosch Oxygen Sensor - for 2006 Buick Rainier 4.2L 6 Cyl - 15132 Click to Enlarge
Website Reviews
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Part Number: 15132
Brand: Bosch
Notes: OE Style Oxygen Sensor -- Bosch validated
Position: Downstream
Condition: New
Shipping Options: Ground
$75.08
(1) In Stock
This Part Fits:
Catalog: H
Vehicle Engine
2006 Buick Rainier 4.2L 6 Cyl
Downstream AC Delco Oxygen Sensor - for 2006 Buick Rainier 5.3L V8 LH6 VIN: M - 213-3537 Click to Enlarge
5 Stars
AC Delco 213-3537
Oxygen Sensor
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Part Number: 213-3537
Brand: AC Delco
Notes: Oxygen Sensor -- New; POST CONVERTER; 1st Design; STAMPED WITH PART NUMBER 19209805) (FOR 2ND DESIGN SEE 19209816
Position: Downstream
Condition: New
Shipping Options: Ground
$62.98
(2) In Stock
This Part Fits:
Catalog: T
Vehicle Engine
2006 Buick Rainier 5.3L V8 LH6 VIN: M
Downstream Left API Oxygen Sensor - for 2005 Buick Rainier 5.3L V8 VIN: M FI Naturally Aspirated GAS - 1900-482151 Click to Enlarge
5 Stars
API 1900-482151
Oxygen Sensor
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Part Number: 18283-07421837
Brand: API
Notes: Oxygen Sensor -- Heated Sensor
Position: Downstream Left
Condition: New
Shipping Options: Ground
$36.98
(45) In Stock
This Part Fits:
Catalog: P
Vehicle Engine
2005 Buick Rainier 5.3L V8 VIN: M FI Naturally Aspirated GAS
Standard Motor Products Oxygen Sensor - for 2007 Buick Rainier 5.3L V8 - SG300 Click to Enlarge
4.8 Stars
Standard Motor Products SG300
Oxygen Sensor
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Part Number: SG300
Brand: Standard Motor Products
Notes: Oxygen Sensor -- Universal Upstream
Condition: New
Shipping Options: Ground
$53.98
(1) In Stock
This Part Fits:
Catalog: N
Vehicle Engine
2007 Buick Rainier 5.3L V8

Related Fuel Injection Parts

Oxygen Sensors available for the following Buick Rainier years: 2007, 2006, 2005, 2004, 07, 06, 05, 04. This part is also sometimes called Buick Rainier O2 Sensor. We stock oxygen sensor parts for most Buick models including LeSabre, Century, Rendezvous, Regal, LaCrosse, Park Avenue, Enclave, Lucerne, Encore, Verano, Roadmaster, Riviera, Terraza, Reatta, Skylark, Envision, Electra, Skyhawk, Allure, Estate Wagon, Commercial Chassis, Somerset, Somerset Regal and Opel.

Buick Rainier Oxygen Sensor Reviews
5 of 5
Verified Customer
11/14/17 12:27 PM - USA

Very nice site to get auto parts! I will be back as I do have a older truck! - DAN G

- 2004 Buick Rainier Oxygen Sensor
5 of 5
Verified Customer
8/15/20 08:44 PM - USA

Exact fit and satisfied. Easy to change out. Half the price of local stores. - Rainer API O-2 Sensor

- 2004 Buick Rainier Oxygen Sensor