WCFab WCF100717 Air Filter 4" Inlet (Dry) (2001-2024 6.6L Duramax; 2003-2018 5.9/6.7L Cummins; 2003-2007 6.0L PowerStroke))

Fitment

This filter matches the WCFab kit, not a specific engine. It is the correct replacement dry air filter for WCFab 4" intake kits and S300 turbo single install kits. Both the title and our engine tags list 2003-2007 5.9L Cummins and 2007.5-2018 6.7L Cummins trucks (Cummins parts), plus 2003-2007 trucks with the 6.0L Power Stroke (Power Stroke parts).

The title also lists 2001-2024 6.6L Duramax trucks, and the listing is tagged for other Power Stroke years as well. Because the title and tags don't line up exactly, verify fitment by VIN and confirm which WCFab kit is on your truck before you order. If you run a WCFab 4" intake or S300 single kit, this is the filter it takes.

Why this part

A dry filter does its job until the media wears out. This one gives you airflow comparable to cotton filters and exceptional filtration that keeps harmful debris out of your engine. On the highway it lasts up to 30,000 miles, and blowing it out with compressed air between services extends its life. Because it is the correct replacement for WCFab's 4" kits, you don't have to guess at the size. When the pleats start to collapse, it is time for a new one. You'll find the kits it fits on our intakes page.

What you get

• One WCFab WCF100717 dry air filter with a 4" inlet

Specifications

• Correct Replacement Dry Air Filter for WCFab 4" Intake kits and S300 Turbo Single Install Kits
• Dry Air Filter 4" Inlet
• Airflow comparable to cotton filters
• Exceptional filtration keeps your engine protected from harmful debris
• Lasts up to 30,000 miles on the highway
• Extend the life of the filter using compressed air

Installation notes

Maintenance: The cleaning and replacement interval depends on your driving conditions. Inspect your air filter every 5,000 miles by removing the filter cover and examining the pleats. Keeping your filter cover clean and blowing out your dry air filter with compressed air helps extend the life of the primary filter media. Depending on use conditions, replace the dry filter every 15-30,000 miles or when you notice that the filter pleats are starting to collapse.

Cleaning: Your WCFab air filter is a DRY media filter. IT IS NOT WASHABLE. To clean it and extend the life between replacement intervals, use compressed air to blow off the outside of the dry filter, keeping the air nozzle moving and no closer than 6 inches to the media. You can do this with the filter still in the vehicle. To blow it out further, remove the filter from the intake, take it to a space away from the vehicle and any openings into the engine, and blow compressed air through the filter from the inside out. Don't concentrate the compressed air in one location on the media.

About Wehrli Custom Fabrication

WCFab (Wehrli Custom Fabrication) has built fabricated diesel parts in DeKalb, Illinois since 2010, including the 4" cold air intake kits with air box that this filter services. The catalog also covers intercooler piping, High Flow bundle kits, cooling parts and traction bars for Duramax, Cummins and Powerstroke trucks.

Frequently asked questions

Can I wash this filter?

No. It is a dry media filter and it is not washable. Clean it with compressed air only, keeping the nozzle moving and no closer than 6 inches to the media.

How often should I replace it?

Inspect it every 5,000 miles. Depending on use conditions, replace it every 15-30,000 miles, or sooner if the pleats start to collapse. On the highway it can last up to 30,000 miles.

Will it fit my WCFab S300 single turbo kit?

Yes. It is the correct replacement dry filter for WCFab S300 turbo single install kits as well as WCFab 4" intake kits.

Questions on fitment? Call the shop at the number in the header. We install everything we sell.