DPF Comp

Keeping your semi-truck's DPF system in tip-top shape is essential for hitting emissions standards and staying road-ready. You'll find everything from filters to sensors and regeneration systems, all working together to keep your engine humming efficiently. Regular maintenance is key—replace parts on time to avoid hefty repairs and boost performance. With a mix of trusty aftermarket and OEM options, pick what fits best for your truck and the environment. It's all about keeping things running smoothly and cleanly on the highway! Find what you need at 4 State Trucks!

Shop Aftertreatment System Parts (DPF, DOC & SRC)

Discover our selection of semi-truck diesel particulate filter (DPF) components and related aftertreatment assemblies. We stock durable, OEM-equivalent parts and aftermarket brands that feature essential replacement DPFs and DPF hardware accessories like gaskets and clamps. Replace your semi truck’s primary aftertreatment components with BESTfit diesel oxidation catalysts, diesel 1-box assemblies, and individual parts for the selective catalytic reduction catalyst.

DPF Sensors & Electronic Entities

Monitor the DPF system and get proper diagnostics with NOx sensor replacements, DPF differential pressure sensors, exhaust gas temperature (EGT) sensors, and DEF doser injection valves. Filter by manufacturer brands, material type, and sem truck make/model to narrow the product selection.

DPF Comp

Shop Aftertreatment System Parts (DPF, DOC & SRC)

DPF Sensors & Electronic Entities

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