2015 Freightliner Columbia Diesel Emission Components
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- Walker Products®Nitrogen Oxide SensorFreightliner Columbia Series 60 Engine 2015, Nitrogen Oxide Sensor by Walker Products®. The Exhaust Gas Recirculation Valve, also referred to as EGR, meters the exhaust gas that is being recirculated into the intake manifold. This...Valve gets stuck in the closed or open position due to a build-up of dirt, debris, or carbonClogged catalytic converter$387.77