DENSO Auto Parts 234-4314 Oxygen Sensor

Corrosion-Resistant Stainless Steel Construction Porous PTFE Filter - Allows Atmospheric Oxygen To Enter The Sensor Without Permitting Water Or Engine Contaminants To Seep Into The Casing Refined Zirconia Element Improves Sensor Response Robotic Laser Weld Double Protection Cover - Maintains Proper Unit Temperature For Quicker Response Times And Protects The Ceramic Element Against Silicone And Lead Poisoning Stainless Steel Housing - Resists Corrosion And Contamination With A Rugged Watertight Body Aluminum-Oxide Trap Layer - Keeps Silicone And Lead Outside The Ceramic Element Through DENSO's Exclusive Design Preventing Damage To The Platinum Electrode Superior Design Maximizes Engine Performance While Reducing Fuel Consumption And Harmful Emissions Ensures Smog Test Compliance Limited 90 Day Warranty

Specifications

Type - Heated
Connector Style - 4 Wire
Voltage Range - OEM
Includes Adapter Fittings - No
Includes Weather Pack Harness - Yes
Includes Weld Fitting - No

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. 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 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.

This Fits

Year	Make	Model
2004-2004	Nissan	Pathfinder