Denso 234-4201 Oxygen Sensor Heated Fits 1997-2010 BMW M5 540i

$105.99 USD

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DENSO's light duty oxygen sensor started to appear on vehicles with the development of fuel injection systems. The basic job of the sensor is to monitor the air fuel mixture under idle, moderate acceleration and cruise conditions. Under heavy acceleration the oxygen sensor goes into "open loop," which basically means that the engine management computer system ignores the oxygen sensor. Oxygen sensors have a smaller range of limits in detecting and adjusting the difference from an optimum air/fuel ratio. As the automotive industry continues to improve on their standards DENSO is keeping the pace with advancements in our engineering to meet the demands from the industry. Also, as car owners are holding on to their vehicles for longer periods, DENSO continues to make auto parts available for those critical replacement parts for all applications. Oxygen sensors, also known as Lambda sensors or oxygen sensors among some vehicle manufacturers, are among the most sensitive and critical components on your car's engine. Earlier fuel injection systems employed one oxygen sensor in the exhaust system to maintain closed-loop air/fuel mixture control. However, today's engines may use as many as four sensors, which monitor not only exhaust gas oxygen content but catalytic converter efficiency as well. In order to perform these functions properly, the sensors must adhere to OE standards within incredibly close tolerances. A malfunctioning or incorrectly calibrated oxygen sensor can hurt drivability and illuminate the malfunction indicator, resulting in costly and time-consuming repairs. DENSO First Time Fit® oxygen sensors are designed to meet those tolerances and more.

Features:
Stainless Steel Housing Resists Corrosion And Contamination With A Rugged, Watertight Body
Robotic Laser Weld
Porous PTFE Filter Blocks Efficiency-Robbing Contaminants
Refined Zirconia Element Improves Sensor Response
Double Protection Cover Maintains Proper Unit Temperature For Quicker Response Times And Protects The Ceramic Element Against Silicone And Lead Poisoning
Aluminum-Oxide Trap Layer Keeps Silicone And Lead Outside The Ceramic Element Through DENSO's Exclusive Design, Preventing Damage To The Platinum Electrode

Specifications:
Type: Heated
Connector Style: 4 Wire

Vehicle Fitment

DENSO 234-4201 fits the following vehicles:

Audi 100 1994–1994

Audi 100 Quattro 1994–1994

Audi A4 1996–1999

Audi A4 Quattro 1996–2000

Audi A6 1996–1999

Audi A6 Quattro 1996–1999

Audi A8 1997–1999

Audi A8 Quattro 1997–1999

Audi Cabriolet 1994–1998

BMW 318i 1996–1998

BMW 318is 1996–1997

BMW 318ti 1996–1999

BMW 323Ci 2000–2000

BMW 323i 1999–2000

BMW 325Ci 2001–2002

BMW 325Ci 2004–2006

BMW 325i 2001–2005

BMW 325xi 2001–2005

BMW 328Ci 2000–2000

BMW 328i 1999–2000

BMW 330Ci 2001–2006

BMW 330i 2001–2005

BMW 330xi 2001–2005

BMW 525i 2001–2005

BMW 528i 1999–2000

BMW 530i 2001–2005

BMW 540i 1997–2003

BMW 545i 2004–2005

BMW 645Ci 2004–2005

BMW 740i 1997–2001

BMW 740iL 1996–2001

BMW 745i 2002–2005

BMW 745Li 2002–2005

BMW 750iL 1995–2001

BMW 760i 2004–2006

BMW 760Li 2003–2006

BMW 840Ci 1996–1997

BMW 850Ci 1995–1997

BMW Alpina B7 2007–2008

BMW M3 2001–2006

BMW M5 2000–2003

BMW M5 2006–2010

BMW M6 2006–2010

BMW X3 2004–2006

BMW X5 2000–2006

BMW Z3 1996–2002

BMW Z4 2003–2008

BMW Z8 2000–2003

Cadillac Catera 1997–1998

Hyundai Accent 1995–1999

Hyundai Elantra 1996–2000

Hyundai Tiburon 1997–2001

Kia Sephia 1998–2001

Kia Spectra 2000–2002

Kia Sportage 1996–2002

Land Rover Discovery 1999–2004

Land Rover Freelander 2002–2005

Land Rover Range Rover 1999–2005

Mercedes-Benz C230 1997–2000

Mercedes-Benz C280 1997–2000

Mercedes-Benz C36 AMG 1997–1997

Mercedes-Benz C43 AMG 1998–2000

Mercedes-Benz CL500 1998–2000

Mercedes-Benz CL600 1998–1999

Mercedes-Benz CLK320 1998–2000

Mercedes-Benz CLK430 1999–2000

Mercedes-Benz E320 1997–2000

Mercedes-Benz E420 1997–1997

Mercedes-Benz E430 1998–2000

Mercedes-Benz E55 AMG 1999–2001

Mercedes-Benz ML320 1998–2000

Mercedes-Benz ML430 1999–2000

Mercedes-Benz ML55 AMG 2000–2003

Mercedes-Benz S320 1997–1999

Mercedes-Benz S420 1996–1999

Mercedes-Benz S430 2000–2000

Mercedes-Benz S500 1996–2000

Mercedes-Benz S600 1996–1999

Mercedes-Benz SL320 1996–1997

Mercedes-Benz SL500 1996–2002

Mercedes-Benz SL600 1996–2002

Mercedes-Benz SLK230 1998–1999

Porsche 911 1994–2001

Porsche Boxster 1997–2002

Rolls-Royce Phantom 2004–2007

Saab 9-3 1999–1999

Saab 9-5 1999–1999

Saab 900 1996–1998

Saab 9000 1996–1998

Volkswagen Cabrio 1995–1999

Volkswagen Corrado 1992–1994

Volkswagen EuroVan 1997–1997

Volkswagen EuroVan 1999–2000

Volkswagen Golf 1993–1998

Volkswagen Jetta 1993–1999

Volkswagen Passat 1993–2001

Volvo 850 1993–1997

Volvo 960 1995–1997

Volvo C70 1998–1998

Volvo S70 1998–1998

Volvo S90 1997–1998

Volvo V70 1998–1998

Volvo V90 1997–1998

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Returns

Returns accepted within 30 days of delivery, with no restocking fees. Items must be unused and in their original packaging. Return shipping is paid by the customer.