Best Crankcase Ventilation Filters of 2026

Robert Reyes Avatar
Robert Reyes
Last Updated: Jan 21, 2026

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Crankcase ventilation filters are an essential component for any engine. These filters are designed to prevent harmful contaminants and oil mist from entering the atmosphere or re-entering the engine. By trapping these pollutants, crankcase ventilation filters can help to improve engine performance, reduce emissions, and extend the life of your engine. These filters are available in a range of sizes and styles to fit a variety of applications, and they are easy to install and maintain. Whether you're a professional mechanic or a DIY enthusiast, a high-quality crankcase ventilation filter is a must-have for your engine.

At a Glance: Our Top Picks

Doc's Diesel 6.7L Cummins CCV Filter Cover #TOP 1
Doc's Diesel 6.7L Cummins CCV Filter
ftb score rating icon 9.9
Fleetguard CV52001 Crankcase Filter Cover #TOP 2
Fleetguard CV52001 Crankcase Filter
ftb score rating icon 9.8
Dorman Crankcase Ventilation Filter Cover #TOP 3
Dorman Crankcase Ventilation Filter
ftb score rating icon 9.6

Top 10 Crankcase Ventilation Filters

#TOP 1

Doc's Diesel 6.7L Cummins CCV Filter

D804418
Doc's Diesel 6.7L Cummins CCV Filter Cover
Doc's Diesel CCV Filter D804418 | Compatible with RAM 6.7L Cummins 2500, 3500, 4500, 5500 2007.5+ | Replaces CV52001

The Doc's Diesel CCV Filter is designed for your 2007.5-2023 Ram 6.7L Cummins. Made from high-quality materials, it resists heat and oil, ensuring durability and longevity. This filter meets or exceeds OEM filtration standards, providing you with peace of mind regarding your vehicle’s performance. You can rely on it for efficient crankcase ventilation, helping to maintain optimal engine function. With a recommended replacement interval of 67,500 miles, it offers convenience by aligning with your vehicle's warranty needs, making maintenance easier for you.

What We Like
OEM-like fit and function
Substantially lower price
Easy installation process
Quality filter material
What We Don't Like
Fit not as solid as OEM
#TOP 2

Fleetguard CV52001 Crankcase Filter

FBA_CV52001
Fleetguard CV52001 Crankcase Filter Cover
Fleetguard CV52001 Crankcase Filter

The Fleetguard CV52001 Crankcase Filter is a must-have for anyone looking to protect their engine and remove emissions. Its Open Crankcase Ventilation (OCV) system eliminates mist, aerosol vapors, and oil drip in the engine compartment, reducing oil consumption and keeping the engine running smoothly. It fits most 6.7L Cummins engines on 2007+ Ram 2500, 3500, 4500 & 5500, and is compatible with OE numbers CV52001, 4936636 & 68002433AB.

What We Like
Perfect fit replacement
Easy installation process
High-quality filtration
Cost-effective alternative
Durable construction
What We Don't Like
Minor edge imperfections
#TOP 3

Dorman Crankcase Ventilation Filter

904-418
Black
7" x 16.5" x 3.2"
Dorman Crankcase Ventilation Filter Cover
Dorman 904-418 Patented Crankcase Ventilation Filter Compatible with Select Models

The Dorman Crankcase Ventilation Filter is a cost-effective solution that matches the fit and function of the original equipment filter. It is designed from durable materials to resist heat and oil, ensuring a long service life. Quality tested for a perfect fit, this filter is an ideal replacement for your vehicle. To ensure it fits your exact make, model and trim level, use the garage tool.

What We Like
Perfect fit
Low price
Easy installation
Includes all o-rings
Good build quality
What We Don't Like
No OEM branding
#TOP 4

RANSOTO CV52001 Crankcase Ventilation Filter

RZ501
RANSOTO CV52001 Crankcase Ventilation Filter Cover
6.7 Cummins Crankcase Ventilation Filter Compatible With 2008-2021 Dodge Ram 2500 3500 4500 5500 6.7L ISB Diesel Engines CCV Breather Element Replaces CV52001, 68002433AC, 904-418

RANSOTO Ventilation Filter is a high-grade durable filter made for 6.7L Diesel Cummins Engines. It is compatible with a wide range of vehicles, including Ram, Ford, Freightliner, Blue Bird, and International. The filter is a perfect replacement for your vehicle's CCV breather element, with a long-life service and tested many times before sale. With this filter, you can ensure that your engine is protected from harmful contaminants and prolong its life. Moreover, the filter is easy to install, and you can do it yourself without any professional help. If you receive a damaged product, the manufacturer provides a warranty service for a better shopping experience.

What We Like
Perfect fitment
Easy installation
Low price
Works as expected
What We Don't Like
Occasional fitment issues
Plastic quality concerns
#TOP 5

Fleetguard CV52001 Crankcase Ventilation Filter Pack

CV52001-2PK
Fleetguard CV52001 Crankcase Ventilation Filter Pack Cover
Fleetguard CV52001 Crankcase Filter (Pack of 2)

The Fleetguard Crankcase Filter is designed to protect your engine by efficiently managing crankcase ventilation. It helps keep your engine clean by reducing oil mist, vapor, and drips, which can otherwise cause buildup and damage. This filter supports better emission control, helping you stay environmentally responsible while maintaining engine performance. It fits most 6.7L Cummins engines found in Ram 2500, 3500, 4500, and 5500 models from 2007 onward, making it a convenient and reliable choice for many truck owners. With this filter pack, you get genuine Fleetguard quality to help extend your engine's life and efficiency.

What We Like
Easy installation process
OEM fit and compatibility
Improved truck performance
Significant cost savings
Made in the USA
What We Don't Like
May require EGR cleaning
#TOP 6

PartsFlow Crankcase Ventilation Filter

904-702
PartsFlow Crankcase Ventilation Filter Cover
904-702 Crankcase Ventilation Filter for 2017 2018 2019 Ford F-250 & F-350 & F-450 Super Duty 6.7L V8 Diesel for 2017 2018 Ford F-550 Super Duty 6.7L V8 Diesel GC4Z6A777B

The PartsFlow Crankcase Filter is designed specifically for 2017-2019 Ford Super Duty models with a 6.7L V8 engine. Its precise fit ensures optimal performance in your vehicle, preventing engine oil and heat from causing damage. Made with durable polypropylene, this filter can handle tough conditions, enhancing your engine's longevity. Additionally, it comes with a 24-month warranty for peace of mind. Before ordering, users are advised to verify the product's appearance and part number for compatibility, ensuring a hassle-free installation.

What We Like
Perfect fit for F350 dually
OEM-like build quality
Easy installation for compatible models
What We Don't Like
Limited compatibility with F250
Does not work with solid unit trucks
#TOP 7

BUYER$ LAIR CV52001 OEM Crankcase Filter Kit

BUYER$ LAIR
FGCV52001_BL
BUYER$ LAIR CV52001 OEM Crankcase Filter Kit Cover
BUYER$ LAIR CV52001 Original OEM Crankcase Filter (Kit includes microfiber cleaning cloth)

The BUYER$ LAIR Crankcase Filter is designed to help keep your engine running smoothly by reducing harmful emissions. Its open crankcase ventilation design helps protect important engine parts from damage caused by pollutants. You'll also benefit from reduced oil usage, as this filter stops oil mist and vapors from escaping inside the engine compartment, which can save you money on oil. Plus, it fits a wide range of 6.7L Cummins engines on various Ram trucks from 2007 and newer, making it a versatile choice for many users. The included microfiber cloth adds convenience for easy cleaning during installation or maintenance.

What We Like
Open Crankcase Ventilation
Reduces oil consumption
Wide vehicle compatibility
Includes cleaning cloth
#TOP 8

GM Genuine Parts 12740187 Crankcase Pressure Sensor

12740187
GM Genuine Parts 12740187 Crankcase Pressure Sensor Cover
GM Genuine Parts 12740187 Crankcase Pressure Sensor

The GM Crankcase Pressure Sensor helps you keep an eye on your vehicle’s crankcase pressure, ensuring it stays within the ideal range. This sensor alerts you if the pressure goes too high or too low, helping you avoid potential engine problems before they happen. Made by GM engineers specifically for Chevrolet, Buick, GMC, and Cadillac vehicles, it guarantees a perfect fit and reliable performance. Plus, GM Genuine Parts go through strict testing and design processes, so you can trust that this sensor meets high standards and supports your vehicle’s longevity and efficiency.

What We Like
Accurate pressure monitoring
Early pressure alerts
OEM quality assurance
Vehicle-specific design
#TOP 9

ApplianPar Crankcase Ventilation Filter for Cummins ISX and Kenworth Trucks

3685528
ApplianPar Crankcase Ventilation Filter for Cummins ISX and Kenworth Trucks Cover
ApplianPar Crankcase Ventilation Filter for Freightliner Cummins ISX Kenworth T680 T800 T880 W900 Peterbilt 365 567 904-7904 3685528

The ApplianPar Ventilation Filter is designed to fit popular truck models like the Cummins ISX 11.9 (2017-12) and a range of Kenworth and Peterbilt trucks, including T680, T800, T880, W900, and models 365, 567, and 579. This makes it easy for you to find the right part for your vehicle without hassle. It replaces several common part numbers, so you can be confident it meets standard specifications and fits well. The package includes one crankcase ventilation filter, providing you with a ready-to-install solution to help maintain your engine’s performance and reduce emissions effectively.

What We Like
Wide vehicle compatibility
Multiple part number replacements
Single ready-to-install filter
Engine performance support
#TOP 10

RHAOCZIYAUTO Air Oil Separator for Ford 6.7L Powerstroke 2017-2019

FC3Z-6A785-F
RHAOCZIYAUTO Air Oil Separator for Ford 6.7L Powerstroke 2017-2019 Cover
Air Oil Separator Assembly Fit for Ford F250 F350 Super Duty 2017-2019 6.7L Powerstroke Diesel - PCV CCV Vent Valve Engine Crankcase Replaces# FC3Z-6A785-F, FC3Z-6A785-D, FC3Z6A785F - without Sensor

The RHAOCZIYAUTO Air Oil Separator is designed to fit Ford Super Duty trucks and chassis cabs from 2016 to 2019 with the 6.7L Powerstroke diesel engine. This part helps keep your engine clean by stopping oil from entering the intake, preventing harmful carbon buildup. It also reduces oil consumption by efficiently separating vapor, saving you money on oil and maintenance. Installation is easy since it’s an updated model that doesn’t require reusing or programming sensors—just plug and play. Made from durable PA66 plastic, it offers strong resistance to heat and wear, ensuring long-lasting performance in your vehicle.

What We Like
Easy installation process
OEM-like fit and appearance
Good initial performance
Solid quality construction
What We Don't Like
Minor fitment issues with bolts
Some hose quality concerns
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What does a crankcase ventilation filter do?

A crankcase ventilation filter is responsible for cleaning the blow-by gases before they are discharged or returned to the engine's intake. Its primary function is to remove contaminants, especially oil mist, from the gases.

2. What happens if the CCV filter is clogged?

If the CCV filter becomes clogged, it can cause vacuum leaks and disrupt the air-fuel ratio in the engine. This can lead to a decrease in engine performance, resulting in reduced power and acceleration, particularly at low speeds.

3. How do I know if my CCV is bad?

Signs of a faulty crankcase ventilation (CCV) include white smoke from the exhaust, excessive oil consumption, rough engine running, and misfires. A failed CCV valve can create a vacuum, leading to air being sucked through the rear main seal in BMW vehicles.

4. What are the symptoms of a bad crankcase breather valve?

One common sign of a bad PCV (positive crankcase ventilation) valve is a whistling or hissing sound from the engine. A Check Engine warning light may also indicate the need for a PCV valve replacement, as it can affect vehicle performance and emissions.

5. What are the symptoms of a bad crankcase pressure sensor?

Symptoms of a faulty crankcase pressure sensor include the check engine light being illuminated, decreased fuel economy, strong fuel smell from the exhaust, and black smoke or soot from the exhaust.

6. What does CCV filter do on Cummins?

The CCV filter on a Cummins engine, such as the 6.7L Cummins Fleetguard CV52001 Crankcase Ventilation Filter, allows the engine to breathe by filtering blow-by gases. It is important to replace the crankcase ventilation filter as recommended to maintain engine performance.

Editor's Notes

During our crankcase ventilation filter research, we found 24 crankcase ventilation filter products and shortlisted 10 quality products. We collected and analyzed 28,988 customer reviews through our big data system to write the crankcase ventilation filters list. We found that most customers choose crankcase ventilation filters with an average price of $38.83.

The crankcase ventilation filters are available for purchase. We have researched hundreds of brands and picked the top brands of crankcase ventilation filters, including Doc's Diesel, Fleetguard, Dorman, RANSOTO, PartsFlow. The seller of top 1 product has received honest feedback from 442 consumers with an average rating of 4.8.

Written by
Robert Reyes Avatar

Robert Reyes is a dedicated writer from San Francisco with a bachelor of degree in mechanics and a bachelor of degree in marketing. He focuses on making some complicated topics simple and enjoys explaining complex and technical things in an easy-to-understand way.

Crankcase Ventilation Filters Comparison Table

#TOP1
#TOP2
#TOP3
#TOP4
#TOP5
#TOP6
#TOP7
#TOP8
#TOP9
#TOP10
Brand Doc's Diesel Fleetguard Dorman RANSOTO Fleetguard PartsFlow BUYER$ LAIR GM GENUINE PARTS ApplianPar RHAOCZIYAUTO
Product Grade Replacement Part - New Replacement Part Performance Part New Replacement Part - - -
OEM Part Number - - - 4936636, 68002433AA, 68002433AB, 904-418, CV52001 4936636, 68002433AB, CV52001 904-702, GC4Z6A777A, GC4Z6A777B, GC4Z 6A785 D CV52001 - 3685528 -
FTB Score
ftb score rating icon 9.9
ftb score rating icon 9.8
ftb score rating icon 9.6
ftb score rating icon 9.4
ftb score rating icon 9.2
ftb score rating icon 9.0
ftb score rating icon 9.0
ftb score rating icon 8.8
ftb score rating icon 8.7
ftb score rating icon 8.5
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