DPF Back Exhaust Systems for Cummins, Duramax & Powerstroke Diesels

What This DPF Back Collection Covers

This catalog covers modern diesel pickups including Ram Cummins, GM Duramax and Ford Super Duty Powerstroke applications. It also includes selected EcoDiesel, Nissan Titan XD and Mercedes-Benz Sprinter DPF-back systems.

Retained Emissions Equipment

A DPF-back system begins after the factory diesel particulate filter. It retains upstream emissions equipment and is a practical exhaust upgrade where the vehicle must keep factory aftertreatment hardware.

Pipe Size and Material

Four inch systems are common for diesel pickups, while five inch systems provide a larger outlet on select applications. Aluminized steel and stainless steel options offer different price, appearance and corrosion-resistance priorities.

Exit Style and Sound

Single side exit, dual exit, no-muffler and muffled options let owners tailor the appearance and sound. Confirm tip location, spare tire clearance and bumper configuration for the selected system.

Diesel Truck Fitment

Match the truck year, engine, cab, bed length and wheelbase to the application. Diesel exhaust routing can change between model years even when the truck body looks similar.

Popular DPF Back Options

• 4 inch DPF-back systems
• 5 inch DPF-back systems
• 409 stainless steel exhaust kits
• 304 stainless steel exhaust kits
• aluminized steel exhaust kits
• single side exit systems
• dual exit systems
• black and polished exhaust tips

How to Choose the Correct DPF Back

• Confirm the exact diesel engine and model year
• Match the cab and bed length where the listing requires it
• Choose 4 inch or 5 inch tubing for the specific application
• Select stainless steel or aluminized steel based on use
• Check single or dual exit bumper compatibility
• Verify the system starts behind the factory DPF
• Review muffler or no-muffler configuration
• Confirm tip finish and outlet position
• Inspect clearance for spare tire and hitch equipment
• Follow all local emissions and sound regulations

Common Questions

What is a DPF-back exhaust system?

A DPF-back system replaces exhaust components behind the diesel particulate filter. The factory DPF and upstream aftertreatment components remain in place.

Does a DPF-back system remove the DPF?

No. A DPF-back system connects after the DPF, so it does not replace the diesel particulate filter.

Should I choose 4 inch or 5 inch DPF-back exhaust?

Choose the diameter offered for the exact vehicle and the sound, clearance and material preferences for your build. Product-specific fitment is the deciding factor.

Will a DPF-back exhaust fit every Duramax?

No. Duramax exhaust routing changes by engine generation, cab, bed length and wheelbase. Use the exact truck fitment details.

Do these exhausts fit Powerstroke and Cummins trucks?

The collection includes applications for Powerstroke and Cummins trucks, but every system is vehicle-specific. Verify the engine and model year before ordering.

What materials are available?

Many systems use aluminized steel, 409 stainless steel or 304 stainless steel. Each offers different corrosion resistance and price points.

Can I keep my factory exhaust tip?

Some systems include a tip and others use their own outlet configuration. Check the listing to see whether factory tip reuse is supported.

Does cab or bed length affect diesel exhaust fitment?

Yes. Wheelbase changes can alter pipe length and hanger locations. Match the cab and bed configuration shown in the listing.

Can I install a DPF-back exhaust at home?

Many systems are bolt-on, but access, rust and vehicle lift requirements can make professional installation useful. Follow the product instructions.

How do I get exhaust fitment help?

Provide the year, make, model, engine, cab and bed length to Black Ops Auto Works before ordering.

Why Buy DPF Back from Black Ops Auto Works

Black Ops Auto Works stocks 104 DPF Back SKUs with real fitment data, competitive pricing and support from staff who build these vehicles themselves. Products are filterable by year, make, model, trim, engine and drivetrain to confirm the correct application before ordering.

For focused shopping, browse our cat-back exhaust systems, diesel downpipes, turbo-back exhaust systems, MBRP exhaust systems, Banks Power diesel upgrades, aFe diesel performance parts.