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The Walker team is committed to helping technicians stay on the leading edge of emissions control diagnosis and repair for commercial vehicles. From web-based resources to live technical support, Walker is a trusted partner in the success of automotive service professionals.
WALKER® COMMERCIAL VEHICLE: Why Exhaust Systems Wear Out

Most Exhaust System Deterioration Occurs from the Inside Out
The exhaust system is one of the very few parts on a vehicle that continues to wear even though the engine is not running and the vehicle is stopped.

Many Factors Can Affect the Life of a Vehicle’s Exhaust System

WALKER® COMMERCIAL VEHICLE: Why Exhaust Systems Wear Out
Weather, temperature, road condition.
WALKER® COMMERCIAL VEHICLE: Why Exhaust Systems Wear Out
Vibrations from daily vehicle usage.
WALKER® COMMERCIAL VEHICLE: Why Exhaust Systems Wear Out
If just one component shows signs of wear, it may potentially damage other related exhaust system components.


A Major Cause of Failure for Exhaust System Parts is Internal Corrosion

WALKER® COMMERCIAL VEHICLE: Why Exhaust Systems Wear Out
Acidic condensate is produced by the combustion of air and fuel. Because these acids are in contact with the inside of the exhaust system, the resulting internal corrosion affects exhaust system parts.