Best Crankcase Ventilation Filters of 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
Top 10 Crankcase Ventilation Filters
Doc's Diesel 6.7L Cummins CCV Filter
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.
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.
Dorman Crankcase Ventilation Filter
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.
RANSOTO CV52001 Crankcase Ventilation Filter
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.
Fleetguard CV52001 Crankcase Ventilation Filter Pack
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.
PartsFlow Crankcase Ventilation Filter
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.
BUYER$ LAIR CV52001 OEM Crankcase Filter Kit
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.
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.
ApplianPar Crankcase Ventilation Filter for Cummins ISX and Kenworth Trucks
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.
RHAOCZIYAUTO Air Oil Separator for Ford 6.7L Powerstroke 2017-2019
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.
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.
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 $38.83.
The crankcase ventilation filters are available for purchase. We have researched hundreds of brands and picked the top brands of crankcase ventilation filters, including Doc's Diesel, Fleetguard, Dorman, RANSOTO, PartsFlow. The seller of top 1 product has received honest feedback from 442 consumers with an average rating of 4.8.
Robert Reyes is a dedicated writer from San Francisco with a bachelor of degree in mechanics and a bachelor of degree in marketing. He focuses on making some complicated topics simple and enjoys explaining complex and technical things in an easy-to-understand way.
Crankcase Ventilation Filters Comparison Table
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| Brand | Doc's Diesel | Fleetguard | Dorman | RANSOTO | Fleetguard | PartsFlow | BUYER$ 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 | - |
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