Walker is an OE supplier to many major nameplate vehicle manufacturers.
Trust Walker, an industry leader, for the finest emission control technologies for import and domestic vehicles.
Fits Like OE Because We Make OE.
Walker offers complete coverage: direct-fit mufflers, converters, pipes, resonators and accessories.
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WALKER® EXHAUST SYSTEMS: Air Gap Pipe
Learn about Walker's exclusive Gap Pipe Technology.
WALKER® EXHAUST SYSTEMS: Air-Gap Pipe

Walker air gap pipe, is double walled pipe with an "air gap" between layers of pipe to promote insulation and allow faster converter light-off, for reduced emissions. Walker incorporates air gap pipe into designs where the OE uses that technology (or a full 360° heat shield), and also where the front pipe is integral part of the converter assembly. Using air gap pipe also assures that there are no jagged edges and no possibility of the heat shield weld coming loose to cause noise.

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Walker part numbers constructed using air gap pipe technology are identified in the catalog by foot note .