You’ll want OE-fit breathers and CCVs that control oil mist, match CV52001/68002433/904-418 cross‑refs, and resist heat, oil and corrosion. Pick Fleetguard, Dorman, Doc’s Diesel, Marsram or equivalent direct-fit units with premium multi-layer media and proper open/closed CCV type for your 6.7L Cummins. Change intervals run ~50k–67.5k miles; shorten for towing or dusty use. Keep OEM part numbers and thread/gasket fit in mind — continue for full fitment, kit and warranty details.
| Crankcase Breather Filter for 6.7L Cummins Ram |
| OE-Grade Replacement | Compatibility / Fitment: 6.7L Cummins ISB (Ram 2008–2024; select Ford, Freightliner, others) | OEM / Replacement Part Numbers (cross-reference): CV52001, 904-418, 68002433AC/AA/AB, 4936636, 904418 | Filtration Function / Purpose: Filters oil vapor / protects crankcase ventilation | VIEW LATEST PRICE | Read Our Analysis |
| Fleetguard CV52001 Crankcase Filter |
| Emissions Protector | Compatibility / Fitment: 6.7L Cummins (Ram 2007+ models; most 6.7L Cummins engines) | OEM / Replacement Part Numbers (cross-reference): CV52001, 4936636, 68002433AB | Filtration Function / Purpose: Open crankcase ventilation; reduces oil mist, emissions removal | VIEW LATEST PRICE | Read Our Analysis |
| 6.7L Cummins CCV Crankcase Ventilation Breather Filter |
| DIY-Friendly Choice | Compatibility / Fitment: 6.7L Cummins ISB (Ram 2008–2021) | OEM / Replacement Part Numbers (cross-reference): CV52001, 68002433AA/AB, 904-418 | Filtration Function / Purpose: Captures contaminants; prevents oil mist buildup; maintains ventilation flow | VIEW LATEST PRICE | Read Our Analysis |
| Doc’s Diesel CCV Filter for 6.7L Cummins RAM |
| Warranty-Backed Pick | Compatibility / Fitment: 6.7L Cummins (Ram 2007.5–2025) | OEM / Replacement Part Numbers (cross-reference): Replaces Mopar/Fleetguard CV52001; Dorman 904-418 | Filtration Function / Purpose: CCV filter; traps vapors/blow-by gases; reduces sludge and oil breakdown | VIEW LATEST PRICE | Read Our Analysis |
| 6.7L Cummins CCV Crankcase Ventilation Filter (2008-2021) |
| Heavy-Duty Durability | Compatibility / Fitment: 6.7L ISB (Ram 2008–2020; Ford, Freightliner, International, Blue Bird variants) | OEM / Replacement Part Numbers (cross-reference): CV52001, 4936636, 904-418, 68002433AA/AB/AC | Filtration Function / Purpose: Captures contaminants; prevents engine wear and clogging; maintains airflow | VIEW LATEST PRICE | Read Our Analysis |
| Dorman Crankcase Ventilation Filter (904-418) |
| Trusted OEM Alternative | Compatibility / Fitment: Select vehicles using original specified engines (confirm fit with vehicle tool; matches OEM locations) | OEM / Replacement Part Numbers (cross-reference): 904-418 (Dorman part reference; matches original breather) | Filtration Function / Purpose: Restores breather performance; maintains crankcase ventilation | VIEW LATEST PRICE | Read Our Analysis |
| Marsram 6.7L Cummins Crankcase Ventilation Filter |
| One-Year Warranty | Compatibility / Fitment: 6.7L Cummins ISB (Ram 2007.5–2023 / 2008–2022 variation) | OEM / Replacement Part Numbers (cross-reference): CV52001, 904418, 4936636, 4812041782, 68002433AA/AB | Filtration Function / Purpose: OEM-level filtration; reduces oil consumption and mist buildup | VIEW LATEST PRICE | Read Our Analysis |
| 6.7L Crankcase Ventilation Filter for Ram Trucks |
| All-Model Fit | Compatibility / Fitment: 6.7L ISB (Ram 2500/3500/4500/5500 2007–2024 variants) | OEM / Replacement Part Numbers (cross-reference): CV52001, 68002433AA/AB/AC, 4936636, 904-418 | Filtration Function / Purpose: Captures dirt and oil mist; maintains engine efficiency | VIEW LATEST PRICE | Read Our Analysis |
| Crankcase Breather & Fuel Filter Kit for Ram 2019-2024 |
| Complete Service Kit | Compatibility / Fitment: 6.7L Turbo Diesel (Ram 2019–2024; kit includes CCV for listed Rams) | OEM / Replacement Part Numbers (cross-reference): CV52001, 68157291AA, 68436631AA, 5083285AA (kit cross-references CV52001) | Filtration Function / Purpose: Replaces CCV to prevent oil leaks/mist; maintains crankcase pressure and ventilation | VIEW LATEST PRICE | Read Our Analysis |
More Details on Our Top Picks
Crankcase Breather Filter for 6.7L Cummins Ram
Should you drive a 2008–2024 Ram with the 6.7L Cummins ISB (or operate compatible heavy-duty Ford, Freightliner, or industrial equipment), this crankcase breather filter is built to match OE fit and function so you can keep oil vapor out of the PCV system and maintain engine performance. You’ll get exact sizing for Rams, Ford F-series and Freightliner models using the 6.7 ISB, with OEM-compatible numbers like CV52001 and 68002433AC. Made with oil-, heat- and corrosion-resistant materials and premium media, each unit’s tested to OE specs. Install confidently—customer support and warranty back the product should you require assistance.
- Compatibility / Fitment:6.7L Cummins ISB (Ram 2008–2024; select Ford, Freightliner, others)
- OEM / Replacement Part Numbers (cross-reference):CV52001, 904-418, 68002433AC/AA/AB, 4936636, 904418
- Filtration Function / Purpose:Filters oil vapor / protects crankcase ventilation
- Construction / Material Qualities:Oil-, heat-, corrosion-resistant; premium filter media
- Installation / Fit (Ease of Replacement):Exact sizing for proper fit; manufactured to OE spec (direct fit)
- Quality Control / Support / Warranty:Units tested during manufacturing; customer service & confidence messaging
- Additional Feature:Universal 2008–2024 fitment
- Additional Feature:Oil/heat/corrosion resistant
- Additional Feature:OE-spec exact sizing
Fleetguard CV52001 Crankcase Filter
In case you drive a 2007-or-newer Ram with the 6.7L Cummins, the Fleetguard CV52001 crankcase filter is a direct-fit, OE-compatible choice that cuts oil mist and protects engine internals. You’ll fit CV52001 to most Ram 2500–5500 trucks and match OE numbers 4936636 or 68002433AB. This open crankcase ventilation (OCV) unit removes emissions while controlling oil: it reduces consumption, stops mist and aerosol vapors, and prevents oil drip in the engine bay. Through keeping contaminants out and the compartment cleaner, it helps preserve engine life and performance with a simple, OEM-grade swap.
- Compatibility / Fitment:6.7L Cummins (Ram 2007+ models; most 6.7L Cummins engines)
- OEM / Replacement Part Numbers (cross-reference):CV52001, 4936636, 68002433AB
- Filtration Function / Purpose:Open crankcase ventilation; reduces oil mist, emissions removal
- Construction / Material Qualities:Durable filter media engineered for OCV application
- Installation / Fit (Ease of Replacement):Direct fit for most 6.7L Cummins applications (OCV direct replacement)
- Quality Control / Support / Warranty:Fleetguard OE-grade product (manufacturer backing for application)
- Additional Feature:Open-crankcase ventilation (OCV)
- Additional Feature:Reduces oil consumption
- Additional Feature:Eliminates oil mist
6.7L Cummins CCV Crankcase Ventilation Breather Filter
Opt for the L Cummins CCV breather filter should you own a 2008–2021 Dodge Ram with the 6.7L ISB diesel — it’s a direct OEM replacement (CV52001, 68002433AA/AB, 904-418) that fits your factory ventilation system. You’ll get premium filtration that traps contaminants and prevents oil mist buildup, keeping crankcase airflow clean and reducing deposits on internals. That improves ventilation efficiency, helps stabilize power output, and can aid fuel economy through maintaining cleaner operation. Installation’s straightforward — no special tools or pro help required — so you can swap it during routine maintenance. Built to OEM dimensions for reliable, long service life.
- Compatibility / Fitment:6.7L Cummins ISB (Ram 2008–2021)
- OEM / Replacement Part Numbers (cross-reference):CV52001, 68002433AA/AB, 904-418
- Filtration Function / Purpose:Captures contaminants; prevents oil mist buildup; maintains ventilation flow
- Construction / Material Qualities:High-quality construction engineered to OEM dimensions
- Installation / Fit (Ease of Replacement):Direct OEM replacement; simple straightforward installation (DIY-friendly)
- Quality Control / Support / Warranty:Engineered to match OEM performance; described as high-quality/reliable
- Additional Feature:DIY-friendly installation
- Additional Feature:Maintains fuel economy
- Additional Feature:OEM direct-replacement
Doc’s Diesel CCV Filter for 6.7L Cummins RAM
Provided you run a Ram with the 6.7L Cummins and want a direct-fit CCV that traps blow-by and cuts sludge buildup, Doc’s Diesel D804418 is made for you — it replaces Mopar CV52001 and Dorman 904-418 and installs without modification. You’ll get a brushed metal, vehicle-specific CCV for 2007.5–2025 6.7L Cummins 2500–5500 trucks that meets or exceeds OEM standards. The closed CCV captures harmful vapors, reduces oil breakdown and engine wear, and promotes cleaner oil and fewer repairs. Change it per manufacturer guidance — roughly every 50,000–60,000 miles (max 67,500). Docs Diesel backs it with standard support.
- Compatibility / Fitment:6.7L Cummins (Ram 2007.5–2025)
- OEM / Replacement Part Numbers (cross-reference):Replaces Mopar/Fleetguard CV52001; Dorman 904-418
- Filtration Function / Purpose:CCV filter; traps vapors/blow-by gases; reduces sludge and oil breakdown
- Construction / Material Qualities:Metal exterior; brushed outer material; replacement-grade construction
- Installation / Fit (Ease of Replacement):Vehicle-specific fit; direct replacement for Mopar/Fleetguard/Dorman references
- Quality Control / Support / Warranty:Brand warranty/support details (Amazon return guarantee; manufacturer warranty info)
- Additional Feature:Brushed metal exterior
- Additional Feature:Vehicle-specific fit
- Additional Feature:50k–67.5k mile interval
6.7L Cummins CCV Crankcase Ventilation Filter (2008-2021)
Should you run a 6.7L ISB-equipped truck and need rugged, oil-resistant filtration that keeps blow-by contaminants from fouling intake systems, this L Cummins CCV filter is a strong choice. You’ll fit it to 2008–2021 6.7L ISB applications across Ram, Ford F-series, Freightliner, Blue Bird, and International models. It replaces OEM numbers like CV52001, 4936636, and 68002433AA/AB/AC. The advanced, high-temp media traps contaminants, maintains airflow for efficient combustion, and helps prevent engine wear and clogging. Corrosion-resistant, precision-engineered housing guarantees leak-free, OEM-level durability in extreme environments. Warranty and responsive after-sales support back the product.
- Compatibility / Fitment:6.7L ISB (Ram 2008–2020; Ford, Freightliner, International, Blue Bird variants)
- OEM / Replacement Part Numbers (cross-reference):CV52001, 4936636, 904-418, 68002433AA/AB/AC
- Filtration Function / Purpose:Captures contaminants; prevents engine wear and clogging; maintains airflow
- Construction / Material Qualities:Oil-resistant, high-temp materials; corrosion-resistant housing
- Installation / Fit (Ease of Replacement):Precision-engineered direct-fit design for leak-free operation
- Quality Control / Support / Warranty:Warranty provided for quality issues; after-sales assistance available
- Additional Feature:Wide OEM cross-coverage
- Additional Feature:Exceeds factory durability
- Additional Feature:Corrosion-resistant construction
Dorman Crankcase Ventilation Filter (904-418)
In case you need a direct, reliable replacement that matches original breather fit and function, the Dorman 904-418 is a strong choice for technicians and DIYers working on the compatible vehicle models. You’ll confirm fit through inputting your vehicle into the garage tool and checking the Confirmed Fit bar; hover the blue “i” for fitment notes. The patented filter restores breather performance whenever the original is missing, cracked, or clogged and’s designed for crankcase ventilation systems. It’s built to strict specs for dependable service, backed up by U.S.-based experts and a manufacturer with over a century of automotive experience. Verify fit prior to installing.
- Compatibility / Fitment:Select vehicles using original specified engines (confirm fit with vehicle tool; matches OEM locations)
- OEM / Replacement Part Numbers (cross-reference):904-418 (Dorman part reference; matches original breather)
- Filtration Function / Purpose:Restores breather performance; maintains crankcase ventilation
- Construction / Material Qualities:Durable construction to strict specifications (patented design)
- Installation / Fit (Ease of Replacement):Direct replacement; install as part of breather service; verify fitment
- Quality Control / Support / Warranty:Backed by U.S.-based product experts; longstanding manufacturer support
- Additional Feature:Patented design
- Additional Feature:U.S.-based support
- Additional Feature:Garage-fit confirmation tool
Marsram 6.7L Cummins Crankcase Ventilation Filter
Should you drive a Ram 2500–5500 with the Cummins 6.7L ISB engine and want a direct-fit, OEM-quality replacement that cuts oil consumption and prevents oil-mist buildup, the Marsram 6.7L crankcase ventilation filter is a smart choice. You’ll get a direct-fit for 2007.5–2023 Ram models using the 6.7L ISB without modifications. It cross-replaces CV52001, 904418, 4936636, 4812041782, 68002433AA/AB and meets OE material and performance standards. Expect OEM-level filtration to reduce oil use and engine wear. Replace it every 67,500 miles or on a clog alert. Marsram includes testing, a one-year warranty, and support.
- Compatibility / Fitment:6.7L Cummins ISB (Ram 2007.5–2023 / 2008–2022 variation)
- OEM / Replacement Part Numbers (cross-reference):CV52001, 904418, 4936636, 4812041782, 68002433AA/AB
- Filtration Function / Purpose:OEM-level filtration; reduces oil consumption and mist buildup
- Construction / Material Qualities:Manufactured to OE standards with high-quality materials
- Installation / Fit (Ease of Replacement):Direct-fit design; no modifications required (vehicle-specific)
- Quality Control / Support / Warranty:1-year warranty; filters tested during manufacturing; customer support
- Additional Feature:1-year warranty
- Additional Feature:Manufacturing quality testing
- Additional Feature:67,500-mile recommendation
6.7L Crankcase Ventilation Filter for Ram Trucks
In case you drive a Ram with the 6.7L ISB diesel, this CCV filter is your best choice for cutting oil mist and trapping crankcase contaminants before they foul intake components. You’ll get a vehicle-specific fit for Ram 2500, 3500, 4500, and 5500 models (2007–2024), plus other compatible variants shown in the image. It replaces OE numbers like CV52001 and 68002433AA/AB/AC and offers advanced media that captures dust and debris while keeping smooth airflow. The reinforced housing guarantees reliable installation and durability. Package includes one filter and a 1-year warranty to safeguard long-term engine performance.
- Compatibility / Fitment:6.7L ISB (Ram 2500/3500/4500/5500 2007–2024 variants)
- OEM / Replacement Part Numbers (cross-reference):CV52001, 68002433AA/AB/AC, 4936636, 904-418
- Filtration Function / Purpose:Captures dirt and oil mist; maintains engine efficiency
- Construction / Material Qualities:Reinforced housing; advanced filter media; corrosion-resistant
- Installation / Fit (Ease of Replacement):Vehicle-specific fit engineered for proper installation (includes one CCV)
- Quality Control / Support / Warranty:1-year warranty; tested/engineered; customer support available
- Additional Feature:Reinforced housing
- Additional Feature:Includes one CCV unit
- Additional Feature:1-year warranty
Crankcase Breather & Fuel Filter Kit for Ram 2019-2024
Owners of 2019–2024 Ram 2500–5500 trucks with the 6.7L Cummins who need a direct-fit replacement will find this Crankcase Breather & Fuel Filter Kit ideal, as it bundles the crankcase breather, fuel filter, fuel/water separator, and oil filter in one vehicle-specific package. You get RARAYC’s new CV52001 kit (replaces 68157291AA, 68436631AA, 5083285AA) with stainless exterior and ABS components. It maintains crankcase pressure, restores performance, stops oil leaks and high idle, and protects components with reinforced, oil-resistant media. Recommended breather change is 67,500 miles. Kit weighs 4.8 lb, includes a six-month warranty and lifetime support.
- Compatibility / Fitment:6.7L Turbo Diesel (Ram 2019–2024; kit includes CCV for listed Rams)
- OEM / Replacement Part Numbers (cross-reference):CV52001, 68157291AA, 68436631AA, 5083285AA (kit cross-references CV52001)
- Filtration Function / Purpose:Replaces CCV to prevent oil leaks/mist; maintains crankcase pressure and ventilation
- Construction / Material Qualities:Oil-resistant, high-temp construction; reinforced filter media; stainless/ABS exterior listed
- Installation / Fit (Ease of Replacement):Vehicle-specific kit designed for guaranteed fit on listed Ram models
- Quality Control / Support / Warranty:6-month warranty; lifetime customer support claimed; returns via Amazon policy
- Additional Feature:Complete 4-piece kit
- Additional Feature:Stainless-steel exterior
- Additional Feature:6-month warranty
Factors to Consider When Choosing Crankcase Ventilation Filters
Upon choosing a crankcase ventilation filter, you should confirm fitment and compatibility with your Ram’s model and check OEM cross‑reference numbers to avoid installation issues. Pay attention to filtration media quality and its temperature and oil resistance so the filter keeps contaminants out without degrading under heat. Also follow service interval recommendations to maintain performance and prevent premature engine wear.
Fitment And Compatibility
Although it could seem minor, getting the right crankcase ventilation filter for your engine family and displacement (for example a 6.7L ISB) is essential to proper sealing, airflow, and emissions control—so always confirm model years and OEM cross-reference numbers, check physical dimensions and connection types, and verify the filter suits your vehicle’s open or closed CCV system before buying. You should match OEM part numbers or cross-references to your service manual to guarantee direct interchangeability. Measure thread size, gasket shape, and mounting orientation so the replacement seats and seals correctly. Validate the filter’s design fits an open versus closed CCV layout to preserve intended ventilation flow and emissions control. Finally, check recommended service intervals and how easy removal and installation will be in your available workspace.
Filtration Media Quality
Choose filter media that actually holds up to the crude reality inside your crankcase: prioritize high-efficiency, oil‑resistant, multi‑layer media rated for sub‑10 µm capture and continuous exposure to raised temperatures so it traps fine oil mist and combustion particulates without degrading or restricting ventilation. You want media that balances capture and flow: gradient-density or multi-layer constructions stop a wide size range while limiting pressure drop. Low-extractable, chemically inert materials prevent accelerated varnish or deposit formation from chemical interaction. Provided the media resists oil saturation and retains pore structure once wet so efficiency stays consistent through the service interval. Ultimately, pick media with lab-proven micron ratings, documented durability against structural collapse, and manufacturer data showing minimal airflow restriction under real-world crankcase loads.
Temperature And Oil Resistance
Because crankcase vents sit in a hot, oily environment, pick filter media, housings, seals and adhesives rated for continuous oil exposure and intermittent peaks of at least 150–200°C so they won’t swell, soften, or delaminate under real-world use. You should choose media and housings specified for oil resistance to prevent pore clogging or degradation from blow-through vapors. Heat-resistant seals and adhesives matter because softened bonds cause bypass leaks or media separation. Look for filters tested against SAE heat-aging and oil-immersion standards and rated for resistance to crankcase oil, fuel traces, and coolant contamination. Finally, verify rated service life under the thermal and contamination stresses you expect—high idle, stop‑start driving, or towing can shorten intervals, so pick filters with proven endurance for your duty cycle.
OEM Cross‑Reference Numbers
Part numbers are your quickest way to confirm fitment, so always cross‑check the OEM reference while selecting a crankcase ventilation filter. Use the full set of OEM cross‑reference numbers, including superseded or legacy IDs, because manufacturers change numbering without altering fit or function. Confirm that listed references match your engine family and model years; one engine variant can carry different CCV part numbers across production runs. Check that catalogs show equivalent designations for both OEM and aftermarket suppliers so you can source the part from multiple vendors or inventory systems. Finally, verify the chosen cross‑reference against the vehicle VIN or engine serial to avoid interchange errors stemming from regional, model‑year, or emissions differences.
Service Interval Recommendations
Now that you’ve confirmed OEM cross‑references, plan filter service around how the engine is used and what the manufacturer recommends. Replace the CCV/PCV filter at the specified interval—many diesels sit between 50,000 and 67,500 miles—but inspect the breather at every major service or oil change (about every 5,000–10,000 miles). Look for oil saturation, clogging, or damage and replace sooner provided contaminated. Shorten intervals for severe duty: towing, frequent idling, dusty or off‑road work, and heavy cycles all amplify blow‑by and loading. Heed dashboard alerts for clogged‑filter warnings, high crankcase pressure, or rising oil consumption and change the filter immediately provided symptoms appear. Once you replace the filter, check PCV valves, breather hoses, and turbo drains to prevent rapid recontamination.
Warranty And Support
Confidence in your purchase comes from clear warranty terms and responsive support, so check coverage length, what failures are included, and how claims are handled before you buy. You should observe whether the warranty is 6 months, one year, or lifetime and whether it covers just manufacturing defects or also performance problems like premature clogging and oil carryover. Confirm whether labor, removal, or reinstallation costs are included. Look for explicit return and replacement rules and required proof — receipt, part number, and vehicle mileage — plus any prorated terms. Verify support channels and response times (phone, email, chat) and whether they offer technical help for fitment or installation. Finally, follow recommended maintenance or technician-installation rules to avoid voiding coverage.
