20 Best Denso 234-9021 Oxygen Sensor in 2022 Reviews and Buying Guide

3,279 Reviews Scanned

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1 Denso 234-9021 Upstream Heated Oxygen Sensor with 4-Wire Plug and 14.17” Harness Denso 234-9021 Upstream Heated Oxygen Sensor with 4-Wire Plug and 14.17” Harness No ratings yet
2 DDenso 234-9051 Upstream 4-Wire 8.5” Air Fuel Ratio Sensor DDenso 234-9051 Upstream 4-Wire 8.5” Air Fuel Ratio Sensor No ratings yet
3 Denso 234-4260 Oxygen Sensor Denso 234-4260 Oxygen Sensor No ratings yet
4 Denso 234-4261 Oxygen Sensor Denso 234-4261 Oxygen Sensor No ratings yet
5 Denso 234-4623 Oxygen Sensor Denso 234-4623 Oxygen Sensor No ratings yet
6 Denso 234-4061 Oxygen Sensor Denso 234-4061 Oxygen Sensor No ratings yet
7 Denso 234-4622 Downstream Oxygen Sensor with 4-Terminal Plug, Black Denso 234-4622 Downstream Oxygen Sensor with 4-Terminal Plug, Black No ratings yet
8 Denso 234-4168 Downstream Oxygen Sensor with 4-Wire 13.7” Harness Denso 234-4168 Downstream Oxygen Sensor with 4-Wire 13.7” Harness No ratings yet
9 DENSO 234-4206 Oxygen Sensor DENSO 234-4206 Oxygen Sensor No ratings yet
10 Denso 234-9005 Oxygen Sensor Denso 234-9005 Oxygen Sensor No ratings yet
11 Denso 234-9012 Air-Fuel Ratio Sensor 4 Wire, Direct Fit, Heated, Wire Length: 7.09” Denso 234-9012 Air-Fuel Ratio Sensor 4 Wire, Direct Fit, Heated, Wire Length: 7.09” No ratings yet
12 Denso 234-9009 Oxygen Sensor Denso 234-9009 Oxygen Sensor No ratings yet
13 Denso 234-4516 OE Heated 4-Wire Downstream Oxygen Sensor 15.75” Denso 234-4516 OE Heated 4-Wire Downstream Oxygen Sensor 15.75” No ratings yet
14 Denso 234-4163 Oxygen Sensor Denso 234-4163 Oxygen Sensor No ratings yet
15 Sensor, Air Fuel Ratio Sensor for Toyota Avalon Sienna DENSO 234-9021 2349021 Sensor, Air Fuel Ratio Sensor for Toyota Avalon Sienna DENSO 234-9021 2349021
16 Oxygen O2 Sensor Upstream 234-9021 Compatible with Toyota Avalon 3.0L 2000-2004 Sienna Solara 3.0L... Oxygen O2 Sensor Upstream 234-9021 Compatible with Toyota Avalon 3.0L 2000-2004 Sienna Solara... No ratings yet
17 234-9021 O2 Oxygen Air Fuel Ratio Sensor for Toyota Sienna Lexus 234-9021 O2 Oxygen Air Fuel Ratio Sensor for Toyota Sienna Lexus No ratings yet
18 234-9021 Air Fuel Ratio Oxygen Sensor 4 Wire Upstream for 2001 2002 2003 2004 Toyota Avalon 3.0L... 234-9021 Air Fuel Ratio Oxygen Sensor 4 Wire Upstream for 2001 2002 2003 2004 Toyota Avalon 3.0L... No ratings yet
19 MIROZO 234-9021 Air Fuel Ratio O2 Oxygen Sensor Upstream for Lexus ES300 2000-01, for Toyota Avalon... MIROZO 234-9021 Air Fuel Ratio O2 Oxygen Sensor Upstream for Lexus ES300 2000-01, for Toyota... No ratings yet
20 Oxygen O2 Sensor Upstream 234-9021 Compatible with Lexus Es300 3.0L 2001-2002 Toyota Avalon Camry... Oxygen O2 Sensor Upstream 234-9021 Compatible with Lexus Es300 3.0L 2001-2002 Toyota Avalon Camry... No ratings yet

SaleBestseller No. 1
Denso 234-9021 Upstream Heated Oxygen Sensor with 4-Wire Plug and 14.17” Harness
  • Manufactured to detect the amount of exhaust gas air fuel ratio
  • Constructed from durable material
  • Features zirconia solid electrolyte
  • Highly accurate
  • Easy installation
Bestseller No. 2
DDenso 234-9051 Upstream 4-Wire 8.5” Air Fuel Ratio Sensor
  • Manufactured to detect the amount of exhaust gas air fuel ratio
  • Constructed from durable material
  • Features zirconia solid electrolyte
  • Highly accurate; Thread Diameter: 18mm
  • Easy installation
Bestseller No. 3
Denso 234-4260 Oxygen 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
Bestseller No. 4
Denso 234-4261 Oxygen Sensor
  • Designed to detect the amount of oxygen in the exhaust system , thread diameter - 18 mm
  • 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
SaleBestseller No. 5
Denso 234-4623 Oxygen Sensor
  • Efficient Fuel Consumption
  • Easy installation
  • Constructed from high quality material
  • Manufactured with precision to meet OE standards
SaleBestseller No. 6
Denso 234-4061 Oxygen 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.Connector Gender: Male
  • Manufactured with precision to meet OE standards
  • Easy installation
Bestseller No. 7
Denso 234-4622 Downstream Oxygen Sensor with 4-Terminal Plug, Black
  • Designed to detect the amount of oxygen in the exhaust system. The mounting type is threaded
  • Constructed from high quality material. The type of sensor is thimble and the thread diameter is 18mm
  • Features double protection layer, aluminum oxide trap layer, PTFE filter and stainless steel housing
  • Manufactured with precision to meet OE standards
  • Easy installation. Material- Zirconium
Bestseller No. 8
Denso 234-4168 Downstream Oxygen Sensor with 4-Wire 13.7” Harness
  • Efficient Fuel Consumption
  • Easy installation
  • Constructed from high quality material
  • Manufactured with precision to meet OE standards
SaleBestseller No. 9
DENSO 234-4206 Oxygen Sensor
  • Universal 4 wire oxygen sensor, flanged -44mm 7.83 in lead wire
  • Sample Image Provided May Differ From Actual Product.
SaleBestseller No. 10
Denso 234-9005 Oxygen Sensor
  • Efficient Fuel Consumption
  • Highly accurate
  • Easy installation
  • Constructed from durable material
Bestseller No. 11
Denso 234-9012 Air-Fuel Ratio Sensor 4 Wire, Direct Fit, Heated, Wire Length: 7.09”
  • Efficient Fuel Consumption
  • Package Dimensions: 4.826 L x 5.588 H x 14.986 W (centimeters)
  • Package Weight: 0.15 pounds
  • Country of Origin : United States
  • Position:Upstream Rear:2004-2006 Toyota Sienna,Position:Upstream Right:2007-2010 Toyota Sienna
Bestseller No. 12
Denso 234-9009 Oxygen Sensor
  • Product Type:Auto Part
  • Item Package Weight:0.136 Kilograms
  • Item Package Dimension:5.588 cm L X14.986 cm W X5.08 cm H
  • Fit Type: Vehicle Specific
Bestseller No. 13
Denso 234-4516 OE Heated 4-Wire Downstream Oxygen Sensor 15.75”
  • 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
Bestseller No. 14
Denso 234-4163 Oxygen 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
Bestseller No. 15
Sensor, Air Fuel Ratio Sensor for Toyota Avalon Sienna DENSO 234-9021 2349021
  • 【Excellent Material】: Designed with high quality materials and every single Sensor is 100% tested throughout the entire manufacturing process
  • 【Function】: Designed to detect the amount of in the exhaust system. Improve fuel economy and increase engine response. High level of accuracy and...
  • 【Great Performance】: Lower emissions and environment-friendly. The engine will run well in air-gas ratio
  • 【Easy Installation】: Durable and easy installation. Fit for Solara Toyota Avalon Sienna
  • 【Friendly Notice】Please check part number, key parameter and information carefully before placing order this item
Bestseller No. 16
Oxygen O2 Sensor Upstream 234-9021 Compatible with Toyota Avalon 3.0L 2000-2004 Sienna Solara 3.0L...
  • Part Number Fitment: 234-9021, 2349021, 8946741030, 89467-41030, 89467-41040, 8946741040, 8946733030, 89467-33030, 5S3572, OS1499, SG745, SG779,...
  • Please confirm your car model and the OE of the part before purchasing to avoid buying the wrong.
  • Please confirm your part picture before purchasing to avoid buying the wrong.
  • It could correctly replace the original part.
  • Thank you!
Bestseller No. 17
234-9021 O2 Oxygen Air Fuel Ratio Sensor for Toyota Sienna Lexus
  • [OEM]: 234-9021, Pls carefully verify your year & make & model in the product description or check your parts pictures & parts No. with ours before...
  • [Compatible]: For TOYOTA (More models are below);
  • [Premium Quality]:Cheap and cheerful, easy to install with related installation video, durable, engineered from high-quality materials to improve...
  • [Installation]:Searching related installation video on the internet will be recommended and always wear eye protection and start with installation...
  • [Note]:Please make sure your original part number matches before purchasing to ensure fitment. If you buy a wrong type for your vehicle, please not...
Bestseller No. 18
234-9021 Air Fuel Ratio Oxygen Sensor 4 Wire Upstream for 2001 2002 2003 2004 Toyota Avalon 3.0L...
  • √ 【Interchange Part No.】Replaces # Denso 234-9021
  • √ 【Fitment】 - Air Fuel Ratio Sensor for 2000-2001 Lexus ES300 3.0L,for 2000-2004 Toyota Avalon Camry Sienna Solara 3.0L
  • √ 【Features】 - O2 Sensor can improve engine efficiency performance and fuel economy,reduce CO2 and other harmful emissions,extend expensive...
  • √ 【You:ll Get】 - 1 Piece of Oxygen Sensor.
  • √ 【Important Note】 - Front and rear oxygen sensors are different do please confirm up and down in the description
SaleBestseller No. 19
MIROZO 234-9021 Air Fuel Ratio O2 Oxygen Sensor Upstream for Lexus ES300 2000-01, for Toyota Avalon...
  • FEATURES OF THE MIROZO OXYGEN SENSOR - Internal Ceramic Insulation for optimal sensor performance; Laser welded sensor body to keep out contaminants;...
  • ADVANTAGES OF THE MIROZO OXYGEN SENSOR: Improve Engine Response & Performance; Save money in fuel costs; Reduce harmful emissions.
  • FITMENT: for Lexus ES300 2000 2001, for Toyota Avalon 2000 2001 2002 2003 2004, for Toyota Camry 2001, for Toyota RAV4 2001 2002 2003, for Toyota...
  • TIPS: If you are not sure whether this product is suitable for your model, please check detail page, or inform us your vehicle part number to let us...
  • An OBD Scan Tool will usually identify Oxygen (O2) Sensors by the Bank Number (B1 = Bank 1; B2 = Bank 2) and Sensor Number (S1 = Sensor 1; S2 = Sensor...
Bestseller No. 20
Oxygen O2 Sensor Upstream 234-9021 Compatible with Lexus Es300 3.0L 2001-2002 Toyota Avalon Camry...
  • 234-9021.
  • Easy Installation.
  • Fitment Info In The Product description.
  • Fast Shipment.
  • If you have any questions, please tell us .
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