Application Guide

ManualsBrandsBosch ManualsAutomotiveBosch 13055 Oxygen Sensor, OE Fitment (Saturn)

What is the difference between Wideband and Air Fuel

ratio sensors?

A Bosch Premium Oxygen Sensor will tell you if your engine is

running rich or lean. A Bosch Wideband Oxygen Sensor is able

to measure the precise amount of oxygen in the exhaust to tell

your ECU exactly how much fuel your engine needs to operate

at optimal combustion. Technical advances like the Bosch

Wideband Oxygen Sensor have allowed vehicle manufacturers

to increase fuel economy as well as engine performance.

Trust the experience of Bosch

Bosch invented the automotive oxygen sensor and has manufactured 400 million

sensors since 1976. Today it is the world’s largest producer of oxygen sensors and

currently supplies them to virtually all vehicle manufacturers in the world.

Did You Know?

Bosch Oxygen Sensors are an exclusive NASCAR Performance® product.

When to replace an oxygen sensor

Exposure to carbon, soot, harmful gases, antifreeze,

chemicals, and thermal and physical shock will shorten the

life of an oxygen sensor. A worn sensor can result in reduced

gas mileage, poor engine

performance, and/or

emissions test failure.

That’s why checking, and

if needed, replacing a

worn-out oxygen sensor

with a Bosch Premium

Oxygen Sensor is an

important part of every

routine tune-up.

Side effects of a worn-out oxygen sensor Beneﬁts of replacing an oxygen sensor

Wastes fuel Saves money in fuel costs

Can cause engine performance problems, such as surging

and hesitating

Improves engine performance

Is the number one cause of excessive harmful exhaust

emissions

Dramatically reduces harmful emissions

Accelerates catalytic converter damage Prevents premature failure of the catalytic converter

Why do i need to replace my oxygen sensor?

It is important to replace your oxygen sensors at the

manufacturer’s suggested intervals or upon failure, whichever

occurs ﬁrst. Prompt replacement will save you money in the

long term. Here’s how:

f If an oxygen sensor is not functioning properly, it may not

accurately measure the amount of fuel being consumed and

cannot efﬁciently regulate the consumption. This results in

lower MPG.

f A faulty oxygen sensor can cause your catalytic converter

to fail prematurely. The catalytic converter is responsible

for removing the harmful emissions from your exhaust gas.

Replacing a catalytic converter can cost thousands of

dollars, signiﬁcantly more than most oxygen sensor

replacements.

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