Denso® - Oxygen Sensor

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1988 Volkswagen Cabriolet
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Product Details

Volkswagen Cabriolet 1988, Oxygen Sensor by Denso®. Position: Upstream. 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.


O2 Sensor Configuration: Direct Fit
Position: Upstream
Sensor Type: Heated
Connector Gender: Male Female
Wires Quantity: 3 Wire Leads
Installation Type: Screw
Wire Harness Length: 49.49" (1257 mm)
Thread Diameter: 0.71" (18 mm)


  • Corrosion-resistant stainless steel construction
  • PTFE filter blocks efficiency-robbing contaminants
  • Refined zirconia element improves sensor response
  • Superior design maximizes engine performance and fuel efficiency while reducing fuel consumption and harmful emissions
  • Ensures smog test compliance

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 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 O2 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 driveability 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. The Denso oxygen sensor catalog offers one of the most complete product lines in the industry, from Acura to Volvo.

Denso® factories are QS9000 and ISO9000 certified worldwide, just one of the many reasons why zero defects for parts produced in the millions is a reality for DENSO. A recipient of the prestigious Deming Award for quality in 1961, Denso spent over five decades perfecting technology and processes, a claim that few automotive manufacturers can make. Denso First Time Fit™ products — including A/C compressors, starters, alternators, oxygen sensors, ignition wire sets, fuel pumps, cabin air, oil and air filters, wiper blades and more — are products built and tested to OE-standard offered for the aftermarket by DENSO. Each of these products is precision-built for exact replacement so you don't have to worry about doing the same job twice.

Part Number:

Warranty Information

Limited warranty policy

For First Time Fit replacement light-duty automotive products

Denso Sales California, Inc. (“Denso”) warrants to the end user that the Denso First Time Fit brand aftermarket products, described below, shall be free of defects in materials and workmanship and will function in accordance with Denso’s published specifications, under ordinary intended use and service, for a period of twelve (12) months/unlimited miles after delivery to the end-user. Denso shall replace any defective product covered by this warranty. Such remedy shall be the end-user’s sole remedy with respect to any covered defect in the products.

This warranty does not cover defects or malfunctions, which result from causes beyond Denso’s control, including, without limitation, (1) unusual physical or electrical stress; (2) an accident, neglect, abuse, misuse or other abnormal use; (3) a failure to perform routine maintenance in accordance with specific vehicle manufacturer’s recommended procedures; (4) normal wear and tear; (5) product repairs or attempted product repairs by an unauthorized person; (6) alterations or modifications to the product; or (7) improper servicing. This warranty shall extend only to the original end-user.

The aforesaid warranty is the only warranty made by Denso with respect to the products and is in lieu of all obligations or liabilities on the part of Denso for damages arising out of or in connection with the sale, use or performance of the products, including, without limitation, any consequential, incidental, special or exemplary damages of any kind. Denso disclaims all other warranties with regard to the products, including all implied warranties of merchantability and fitness for use. There are no warranties that extend beyond the description contained herein.

This warranty supersedes any other warranty statement and may also give you specific legal rights which may vary from state to state.

Excluded from this warranty are products which are subject to normal wear and tear, such as filters, ignition wires, oxygen sensors, spark plugs, wiper blades, etc.

Warrantable products

  • Air conditioning system: evaporators, compressors, compressor clutches, condensers
  • Engine cooling system: radiators
  • Fuel delivery system: fuel injectors, fuel pump assemblies, fuel pumps, fuel sending units
  • Ignition system: direct ignition coils (C.O.P.)
  • Rotating electrical: alternators, starters
Magnuson-Moss Warranty Act:
Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)) Learn More

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Low Prices Price match guarantee
In-House Experts We know our products
Guaranteed Fitment Always the correct part
Easy Returns Quick & Hassle Free

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