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Land Rover Discovery Oxygen Sensor

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$35.19 List Price $41.52 Save $6.33 Availability: In Stock
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UNIVERSAL TYPE OXYGEN SENSOR, HEATED, 4-WIRE, SOLD INDIVIDUALLY

This REPLACEMENT oxygen sensor is crafted from high quality materials - stainless steel shell, hex nut, shield, Teflon-covered insulated wires, high-temperature rubber internal and external seals, and threaded tube coated with anti-seize compound.

Tested to ensure highest level of quality and reliability; it helps to reduce harmful emissions and extends catalyst life.

Notes: May not be compatible with flanges. May require minor modifications

View Installation Instruction

Replacement brand parts are the most affordable solution for your replacement needs! Replacement specializes in a wide range of OE replacement auto parts including body parts, lighting, electrical, brakes, suspension, intake, exhaust, cooling and heating parts. All Replacement brand items are backed by 1-year, unlimited-mileage warranty.

  • SKU#: USOS-4000
  • Brand: Replacement
  • Quantity Sold: Sold Individually
  • Recommended Use: OE Replacement
  • Anticipated Ship Out Time: 1-2 Business Days
  • Includes: Butt type connectors, without plug
  • Mounting Style: Threaded-in
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Fits the following Land Rover Discovery Years:
  • 1996-2004 | All Engines | All Submodels
Rating: (see review/s)

"the first O2 sensor was faulty. Return and replacement went very smoothly. Auto Parts even paid the return postage. Definitely a reputable firm to deal with.I would buy from them in the future without any hesitation." posted by: on July 21, 2014

"It came in the mail I put it in and it worked. Just as expected." posted by: on June 6, 2014 view all 131 reviews

$89.54 List Price $241.10 Save $151.56 Availability: In Stock
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BOSCH REGULAR CLASS OXYGEN SENSOR

Bosch Regular Class Oxygen Sensor provides submersible patented connection system that protects against contamination, withstands the effects of extreme temperatures, and engine vibration. Made to improve engine performance, prevents premature failure for catalytic converter, and reduces harmful emissions.

Specifications:
  • 4-wire
  • 26.8 in.
  • Heated

Features:
  • Manufactured with a two-foot length sensor wire
  • Uses a submersible patented connection system that protects against contamination and withstands the effects of extreme temperatures and engine vibration
  • Posi-lock connectors that can be unscrewed and reconnected in case of a wiring mistake

Wire splicing required.

  • SKU#: BS15738
  • Brand: Bosch
  • Quantity Sold: Sold Individually
  • Recommended Use: OE Replacement
  • Anticipated Ship Out Time: Same day - 1 business day
  • Warranty: 12-month or unlimited-mileage Bosch limited warranty
  • Wire Length: 26.8 in.
 
Fits the following Land Rover Discovery Years:
  • 2004 | 8 Cyl 4.6L | HSE, S, SE
  • 2003 | 8 Cyl 4.6L | HSE, S, SE
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Rating: (see review/s)

"Wiring up the connection was a breeze and I saved $$'s opting for this one over the one with the plug already made on. I unplugged the old one and then spliced on the plug to the new one using the enclosed kit. Then pluged it back in!" posted by: maxsr on November 5, 2009

"I spent more time removing the old parts than I did installing the new oxygen sensors. The connections and instructions were very easy to follow.....The preformance of the new OS plugs showed immeadiatelly." posted by: OBmind on September 25, 2009 view all 3 reviews

$88.46 List Price $104.38 Save $15.92 Availability: In Stock
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DENSO REGULAR CLASS OXYGEN SENSOR

Denso Regular Class Oxygen Sensors are specifically designed to meet the challenging demands of today's engines. Each of Denso's Oxygen Sensor is constructed from the highest quality materials available. Manufactured to the OE standards and subjected to rigorous safety and performance tests.

Specifications:
  • 4-wire
  • 11.7 in. lead wire

Features:
  • Constructed from high quality stainless steel, porous polytetrafluoroethylene, fluorine rubber, aluminum oxide, high-grade platinum, and ceramics
  • Double protection layer
  • Aluminum oxide trap layer
  • Porous PTFE filter
  • Stainless steel housing
1 required per vehicle. Requires wire splicing and electrical installation. Reuse your old connector.

  • SKU#: NP2344201
  • Brand: Denso
  • Quantity Sold: Sold Individually
  • Recommended Use: OE Replacement
  • Anticipated Ship Out Time: Same day - 1 business day
  • Replaces OE Number: 9202721
  • Warranty: 12-month Denso limited warranty
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Fits the following Land Rover Discovery Years:
  • 2003-2004 | 8 Cyl 4.6L | HSE, S, SE
  • 2001-2002 | 8 Cyl 4.0L | Series II SD, Series II SE
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$120.89 List Price $142.65 Save $21.76 Availability: In Stock
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WALKER PRODUCTS OXYGEN SENSOR

Walker Products Oxygen Sensors are made to improve engine response and performance. Their typical life expectancy ranges from 30,000 to 60,000 miles if accompanied with regular preventive maintenance while heated oxygen sensors can last 100,000 miles or more.

Specifications:
  • 4-wire
  • 20.5 in. length

Features:
  • Improves car's engine response and gas mileage
  • Effectively lowers emissions upon replacing its tired old oxygen sensor
  • Exceeds OE specifications and test requirements


  • SKU#: 25024804
  • Brand: Walker Products
  • Fit Note: Without AELS
  • Quantity Sold: Sold Individually
  • Recommended Use: OE Replacement
  • Anticipated Ship Out Time: 1-2 Business Days
 
Fits the following Land Rover Discovery Years:
  • 1999 | 8 Cyl 4.0L | Series II
  • 1996-1999 | 8 Cyl 4.0L | SD
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$88.95 List Price $267.48 Save $178.53 Availability: In Stock
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NTK Oxygen Sensor

NTK is the world’s largest supplier and manufacturer of original equipment oxygen sensors. NTK oxygen sensors meet or exceed original equipment specifications and are equipped with waterproof factory fitted connectors to ensure a perfect fit every time.

Every NTK oxygen sensor is individually tested to ensure the highest level of quality and reliability.
  • OE-Equivalent.
  • Direct fit for easy installation.
  • Extensively Tested During Manufacture to Guarantee Quality and Reliability
  • Supplied With a Factory-Fitted OEM Connector for Easy Installation
  • Precision manufactured with a sensing element incorporating NTK's premier technical ceramics
Installation Notes: Vehicles equipped with Air Fuel Ratio Sensors may look very similar to the Oxygen Sensor. Please confirm the correct part before ordering and if the connector does not match, do not install.

Warranty Information:
12 month - 12,000 mile limited warranty against defects in material and workmanship.


  • SKU#: W0133-1612981
  • Brand: NTK
  • Fit Note: w/ Advance Evaporative Loss
  • Notes: Ships to U.S. addresses only. Cannot be shipped internationally.
 
Fits the following Land Rover Discovery Years:
  • 1999 | All Engines | SD
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$57.80 List Price $68.20 Save $10.40 Availability: In Stock
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DELPHI OXYGEN SENSORS, 4-WIRE -- 22.83 in. overall length, 18 x 1.5 mm thread size, 0.88 in. wrench size, square-4 blade connector type, 100,000 miles inspection interval, heated; OE connectors and wire length are within 3 inches of OE specifications; Unique sensor coatings to resist contamination and ensures long lasting reliable operation; With 1-year or 12,000-mile Delphi warranty.
  • SKU#: DELES10896
  • Brand: Delphi
  • Quantity Sold: Sold Individually
  • Recommended Use: OE Replacement
  • Anticipated Ship Out Time: Same day - 1 business day
  • Thread Size: 18 x 1.5 mm
  • Warranty: 1-year or 12,000-mile Delphi limited warranty
(see more)
Fits the following Land Rover Discovery Years:
  • 2003-2004 | 8 Cyl 4.6L | HSE, S, SE
  • 2001-2002 | 8 Cyl 4.0L | Series II SD, Series II SE
(see more)
$98.26 List Price $115.95 Save $17.69 Availability: In Stock
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STANDARD OXYGEN SENSOR, SOLD INDIVIDUALLY

1 terminal; A high quality, OE replacement oxygen sensor.

  • SKU#: SISG1717
  • Brand: Standard
  • Quantity Sold: Sold Individually
  • Recommended Use: OE Replacement
  • Anticipated Ship Out Time: Same day - 1 business day
  • Warranty: 3-year or 36,000-mile Standard limited warranty
  • Wire Length: 22.4 in.
 
Fits the following Land Rover Discovery Years:
  • 2000-2004 | All Engines | All Submodels
  • 1999 | All Engines | Series II
View Less
Thanks to its outstanding engine, the Land Rover Discovery is one of the first choices of English royals when it comes to off-road SUVs. This, however, will not be possible without the Land Rover Discovery oxygen sensor. This small device found in different parts of the exhaust system detects rich and lean oxygen-fuel mixture. Through this function, the engine runs more efficiently and only the right amount of fuel is used. A faulty oxygen sensor will make the Land Rover Discovery computer guessing, leading to poor engine performance and increased fuel consumption. With this, a damaged oxygen sensor should be replaced the soonest.

Frequently Asked Questions

Ask APW
  • How long does the Land Rover Discovery oxygen sensor replacement normally take place?
    Answer: Because there are four or more oxygen sensors inside the Land Rover Discovery, replacing these can last from 30 minutes to an hour depending on the DIY skill level of the owner. The replacement involves working under the Land Rover Discovery. Tools to be used include screwdrivers, a ratchet wrench, and an anti-seize compound. Almost anyone can do it as long as guided properly.
  • What is wrong when trouble code P0174 continues to flash even after replacing the oxygen sensor?
    Answer: The P0174 code generally means that an oxygen sensor in the Land Rover Discovery has been detecting a lean mixture in the exhaust system. The initial thing to do is check the engine and exhaust system because the fault may not be with the new oxygen sensor. A probable cause of this issue is through a leak in the exhaust system. This leak can bring in more air for the oxygen sensor to detect, resulting in a lean mixture.
  • How difficult is cleaning an oxygen sensor in the Land Rover Discovery?
    Answer: Varnish, gums, and other contaminants in the exhaust system can cover the oxygen sensor and keep it from working. A dirty Land Rover Discovery oxygen sensor can lead into more serious problems from the catalytic converter and the engine. To make sure that the oxygen sensor is working properly, it is recommended to constantly clean it. Good news is that cleaning the oxygen sensor is fairly easier than cleaning most parts in an automobile. The best way is by adding an auto marine motor treatment to the fuel tank and driving the Land Rover Discovery. The strong solution will break down the build-up in the oxygen sensor. However, the solution contains petroleum distillates that can harm eyes and skin and damage the vehicle's paint. With this, appropriate care should be applied when using the auto marine motor treatment.
  • What are the tools needed in testing the Land Rover Discovery oxygen sensor?
    Answer: The only thing needed in testing the oxygen sensor is an oscilloscope. This is basically a device that measures the changes in signal voltages in electronic devices such as the oxygen sensor. Testing the device involves attaching the oscilloscope to it and driving the Land Rover Discovery for up to 2000 rpm. An oxygen sensor should be replaced if the oscilloscope shows no change or slow response time.