Western Star Semi Truck Diesel Emission Components
- Bosch®Diesel Emissions Fluid (DEF) Filter (1457436088)Diesel Emissions Fluid (DEF) Filter (1457436088) by Bosch®. Protect your engine with Bosch fuel filters.Dirt-holding capacity of 15 gramsRobust aluminum-, plastic-, or surface-treated steel filter housing$33.74
- Walker Products®Nitrogen Oxide Sensor (1004-1034)Nitrogen Oxide Sensor (1004-1034) by Walker Products®. Location: SCR Catalyst Inlet. The Exhaust Gas Recirculation Valve, also referred to as EGR, meters the exhaust gas that is being recirculated into the intake manifold. This exhaust...Valve gets stuck in the closed or open position due to a build-up of dirt, debris, or carbonClogged catalytic converter$310.21
- Walker Products®Nitrogen Oxide Sensor (1004-1077)Nitrogen Oxide Sensor (1004-1077) by Walker Products®. Location: SCR Catalyst Outlet. The Exhaust Gas Recirculation Valve, also referred to as EGR, meters the exhaust gas that is being recirculated into the intake manifold. This exhaust...Valve gets stuck in the closed or open position due to a build-up of dirt, debris, or carbonClogged catalytic converter$387.77