KOROP 6.7L Cummins CCV Crankcase Vent Filter for 2008–2021 Ram 2500/3500 — Direct Fit, OEM Cross-Reference

The KOROP 6.7 Cummins Crankcase Ventilation (CCV) Filter is a direct-fit replacement designed to restore crankcase breathing, reduce oil contamination, and maintain engine performance on 6.7L ISB diesel applications.

When your Cummins 6.7L ISB engine begins to show signs of crankcase pressure, oil leaks at seals, or increased blow-by residues, replacing the CCV filter is one of the most effective maintenance steps. This KOROP element matches common OEM part numbers and fits a broad range of heavy-duty trucks, buses, and chassis using the 6.7L ISB platform from model years 2008–2021. Built with durable materials and engineered to meet or exceed OEM fitment, it helps trap oil aerosols and contaminants before they re-enter the intake or crankcase system.

How does this filter fit my vehicle and which models are covered?

This KOROP CCV filter is manufactured to match the dimensions and connection points of popular OEM replacements, so it installs in the same location as factory parts. It replaces multiple OEM numbers, making it a straightforward swap for many platforms.

• Direct replacement for CV52001, 68002433AA/AB/AC, 4936636, 904-418.
• Fits 6.7L Cummins ISB engines in 2008–2021 Dodge Ram 2500/3500/4500/5500.
• Also compatible with select Ford F650/F750, Blue Bird, and Freightliner models listed in product fitment.
• Designed for bolt-in installation—no permanent modifications required.

What performance benefits can I expect after installing this CCV filter?

Replacing a clogged or aged crankcase vent filter reduces crankcase pressure, limits oil contamination of intake components, and supports cleaner PCV system operation. The result is smoother idling, reduced oil consumption into the intake, and less soiling of sensors and turbo components.

• Reduces oil aerosol recirculation and intake contamination.
• Helps prevent seal leaks caused by elevated crankcase pressure.
• Supports consistent engine breathing and idle quality.
• Protects turbocharger and EGR components from oil buildup.

How durable is the KOROP CCV element and what quality assurances are provided?

The filter is constructed from high-quality materials and undergoes testing to align with OEM expectations for fit and filtration. KOROP emphasizes durability and offers a limited warranty to back the part’s reliability for regular service intervals.

• Made from robust filtration media and housing materials for long service life.
• Manufactured to match OEM dimensions and connection points.
• Comes with a 6-month limited warranty and return policy for buyer protection.
• Engineered to meet or exceed typical dealer quality at a lower price point.

How do I install and maintain this replacement CCV filter?

Installation is a straightforward maintenance task for most technicians and DIYers comfortable with basic engine service. Regular inspection and replacement according to operating conditions will keep crankcase ventilation functioning properly.

• Remove the old CCV element from the valve cover or housing, noting orientation.
• Clean the sealing surfaces and mating areas before fitting the new element.
• Install the KOROP filter until fully seated; ensure any clamps or fasteners are secure.
• Replace during scheduled service or when symptoms of restricted ventilation appear.

Who is this for: This replacement CCV filter is aimed at owners and technicians working on 6.7L Cummins ISB diesel engines in Dodge Rams, Class 6–7 trucks, school buses, and vocational chassis that match the listed fitment. If you need an OEM-equivalent crankcase breather element to reduce oil re-circulation, restore engine breathing, and maintain service intervals without paying dealer prices, this KOROP filter is a practical, warranty-backed option.