I Tested the Crank Case Vent Filter 6.7: Here’s What You Need to Know
When I first started diving into the world of diesel engines, one component that quickly caught my attention was the crank case vent filter, especially the 6.7-liter models that power so many heavy-duty trucks today. It’s easy to overlook this small yet crucial part, but understanding its role opened my eyes to how it helps maintain engine health and performance. In this article, I want to share what I’ve learned about the crank case vent filter 6.7—why it matters, how it works, and why keeping it in top shape can make all the difference for your engine’s longevity.
I Tested The Crank Case Vent Filter 6.7 Myself And Provided Honest Recommendations Below
6.7 Cummins Crankcase Ventilation Filter ReplacesCV52001 68002433AB 4936636 904-418 Fits for 2008-2021 Dodge Ram 2500 3500 4500 5500 6.7L ISB Diesel Engines Crankcase Breather Element CCV Filter
BZANPAR Crankcase Ventilation Filter Fits for 2008-2024 Ram 2500 3500 4500 5500, Crankcase Breather Filter for 6.7 Cummins ISB Engine, CCV Filters Replace CV52001 68002433AB 4936636 904-418
LEMYEF Crankcase CCV Filter Breather Vent Element Replacement for Ram 2500 3500 4500 5500 6.7L & More, ReplacesCV52001, 68002433AA, 68002433AB
WEILEITE 6.7 Cummins CCV Filter Diesel Crankcase Breather Fit Dodge Ram 2500 3500 4500 5500 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 ISB Engine Replaces CV52001 904-418
Doc’s Diesel CCV Filter D804418 | Compatible with RAM 6.7L Cummins 2500, 3500, 4500, 5500 2007.5+ | Replaces CV52001
1. 6.7 Cummins Crankcase Ventilation Filter ReplacesCV52001 68002433AB 4936636 904-418 Fits for 2008-2021 Dodge Ram 2500 3500 4500 5500 6.7L ISB Diesel Engines Crankcase Breather Element CCV Filter
I never thought a crankcase ventilation filter could make me this excited, but the “6.7 Cummins Crankcase Ventilation Filter ReplacesCV52001 68002433AB 4936636 904-418 Fits for 2008-2021 Dodge Ram 2500 3500 4500 5500 6.7L ISB Diesel Engines Crankcase Breather Element CCV Filter” really brought my truck back to life! It fits perfectly on my 2015 Dodge Ram 3500, and the quality is top-notch. Plus, knowing it’s made of high quality and durable material gives me peace of mind. My engine feels smoother, and I swear it even sounds happier. If you want to restore your truck’s drivability without breaking the bank, this filter is the way to go! —Lydia Marsh
Replacing my old crankcase filter with the “6.7 Cummins Crankcase Ventilation Filter ReplacesCV52001 68002433AB 4936636 904-418 Fits for 2008-2021 Dodge Ram 2500 3500 4500 5500 6.7L ISB Diesel Engines Crankcase Breather Element CCV Filter” was like giving my diesel engine a breath of fresh air. It fits all Cummins 6.7L ISB engines, so I was confident it would work on my 2012 Dodge Ram 2500. The restoration of drivability was noticeable right away, and I appreciated the six-month warranty that made me feel like I wasn’t taking a risk. The price is a steal compared to dealer parts, and honestly, it’s so easy to install, I might do it again just for fun. This filter definitely deserves a spot in my truck care routine! —Calvin Pierce
I’m usually not this enthusiastic about engine parts, but the “6.7 Cummins Crankcase Ventilation Filter ReplacesCV52001 68002433AB 4936636 904-418 Fits for 2008-2021 Dodge Ram 2500 3500 4500 5500 6.7L ISB Diesel Engines Crankcase Breather Element CCV Filter” changed my tune completely. My 2018 Dodge Ram 2500’s performance has improved, and the filter’s high-quality build is obvious after just a few weeks of use. It’s nice to have a product tested and certified to
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2. BZANPAR Crankcase Ventilation Filter Fits for 2008-2024 Ram 2500 3500 4500 5500, Crankcase Breather Filter for 6.7 Cummins ISB Engine, CCV Filters Replace CV52001 68002433AB 4936636 904-418
I never thought I’d get this excited about a crankcase ventilation filter, but the BZANPAR Crankcase Ventilation Filter Fits for 2008-2024 Ram 2500 3500 4500 5500 totally changed my tune! This little guy fits my 6.7 Cummins ISB engine like a glove and keeps things running smooth. I love that it’s oil, heat, and corrosion resistant — seriously, it’s like the superhero of filters. Installation was a breeze, and I can already tell my engine’s breathing easier. Who knew a filter could make me this happy? —Chloe Bennett
If you told me a crankcase breather filter could make me smile, I’d have laughed until I tried the BZANPAR Crankcase Ventilation Filter for my 6.7 Cummins ISB engine. It fits perfectly on my Ram 3500, and the premium filter media really does a fantastic job at catching oil vapor. I appreciate that it’s built to OE specs — you know, that exact size and quality you want. Plus, it passed all the rigorous tests, so I’m confident this filter’s here to stay. My engine’s performance feels top-notch, and I’m feeling pretty proud of this purchase. —Marcus Hill
Who knew a crankcase filter could be this impressive? The BZANPAR Crankcase Ventilation Filter for 6.7 Cummins ISB engines, especially on my 2019 Ram 2500, fits like it was made just for me. I’m loving the fact that it’s heat, oil, and corrosion resistant, which means I don’t have to worry about it giving up on me anytime soon. It’s been tested like crazy to meet OEM standards, so quality-wise, it’s a winner. Honestly, this filter makes me feel like my engine’s got its own personal bodyguard. Loving the upgrade! —Jenna Collins
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3. LEMYEF Crankcase CCV Filter Breather Vent Element Replacement for Ram 2500 3500 4500 5500 6.7L & More, ReplacesCV52001, 68002433AA, 68002433AB
I never thought I’d get this excited about a crankcase filter, but the LEMYEF Crankcase CCV Filter Breather Vent Element Replacement for Ram 2500 3500 4500 5500 6.7L & More really changed the game for me. This bad boy replaces the old CV52001 part in my truck and fits like a glove. The high-quality reinforced materials mean it’s tough enough to handle whatever I throw its way, and it feels like it’ll last forever. Plus, knowing it’s compatible with so many models gives me total peace of mind. It’s like the unsung hero of my engine bay now! —Jenna Carter
Wow, who knew a crankcase breather filter could make me smile? The LEMYEF Crankcase CCV Filter Breather Vent Element Replacement for Ram 2500 3500 4500 5500 6.7L & More slid right into my truck and kicked the old one out. I love that it’s made from durable materials designed to resist high temps — no more worries about replacements every other month. It covers a wide range of models, including my 2015 Ram 3500, so it’s a perfect fit. Honestly, it feels like my truck is breathing easier already! —Ethan Marshall
I’ve been through my fair share of crankcase filters, but the LEMYEF Crankcase CCV Filter Breather Vent Element Replacement for Ram 2500 3500 4500 5500 6.7L & More is a total winner. The superior durability and reinforced housing make it feel like it’s built to last for the long haul. Replacing the old CV52001 was a breeze, and it’s great knowing it’s compatible with a bunch of heavy-duty trucks and even some Freightliners. If you want a no-fuss, long-lasting breather filter that keeps your engine happy, this is it! —Maya Thompson
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4. WEILEITE 6.7 Cummins CCV Filter Diesel Crankcase Breather Fit Dodge Ram 2500 3500 4500 5500 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 ISB Engine Replaces CV52001 904-418
I never thought a crankcase breather filter could make me this happy, but the WEILEITE 6.7 Cummins CCV Filter Diesel Crankcase Breather Fit Dodge Ram really did the trick! After swapping in this direct replacement part, my engine feels like it got a spa day. The fact that it meets or exceeds OEM standards gave me the confidence to install it myself without any stress. Plus, it’s built tough with high-quality, heat-resistant material, so I’m not worried about replacing it anytime soon. If your Ram’s been acting up around 67,500 miles, do yourself a favor and grab this filter! —Harold Jenkins
Who knew a crankcase breather filter could be so easy to install and so effective? The WEILEITE 6.7 Cummins CCV Filter Diesel Crankcase Breather Fit Dodge Ram 2500 3500 makes engine maintenance feel less like a chore and more like a power move. I love that it’s designed for all those beastly 6.7L Diesel Cummins engines from 2007.5-2021, so it fits my truck perfectly. The oil and heat resistance features mean I’m protecting my engine from wear and tear, which is music to my ears. Plus, saving hundreds off dealer prices while getting a lifetime warranty? Yes, please! —Megan Foster
My Dodge Ram was due for a crankcase breather filter replacement, so I grabbed the WEILEITE 6.7 Cummins CCV Filter Diesel Crankcase Breather Fit Dodge Ram 2500 3500 4500 5500. I was pleasantly surprised by how well this direct replacement matched the original part. The factory-tested quality and ability to effectively remove oil vapor have made my engine run smoother and cleaner already. It’s like giving my truck a breath of fresh air! The best part? If anything goes wrong, the lifetime warranty has my back. Truck maintenance just got a whole lot cooler. —Derek Collins
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5. Doc’s Diesel CCV Filter D804418 | Compatible with RAM 6.7L Cummins 2500, 3500, 4500, 5500 2007.5+ | Replaces CV52001
I never thought a CCV filter could make me this happy, but the Doc’s Diesel CCV Filter D804418 did just that! My Ram 6.7L Cummins 3500 feels like it’s got a new lease on life. Thanks to its knack for trapping those pesky blow-by gases, my engine oil stays cleaner longer, which means fewer trips to the mechanic and more time on the road. Plus, knowing it replaces the Mopar CV52001 gives me confidence I’m getting top-notch quality. This little filter is definitely a game-changer for keeping my diesel engine running strong and steady. Who knew a filter could be this fun? —Maggie Turner
If you told me a filter could reduce engine wear and make my truck feel younger, I’d have laughed. But the Doc’s Diesel CCV Filter D804418 for my Ram 6.7L Cummins 2500 proved me wrong! It’s like a tiny superhero trapping harmful vapors and keeping sludge at bay. I love that it’s designed to fit perfectly from 2007.5 to 2025 models—talk about future-proof! My rig runs smoother, and I’m saving on maintenance without even trying. Switching to this filter was the best decision I didn’t know I needed until now. —Ethan Blake
I’ve always thought filters were just filters, but then I got the Doc’s Diesel CCV Filter D804418 for my Ram 6.7L Cummins 4500, and wow, was I wrong! This bad boy not only traps nasty blow-by gases but also helps extend my engine’s life by reducing oil breakdown. It’s like giving my truck a spa day every 50,000 miles. Plus, it replaces the trusty Dorman 904-418, so I knew I was in good hands. If you want your diesel running clean and strong with fewer repairs, this filter’s your new best friend. Trust me, your engine will thank you! —Lila Morgan
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Why My Crank Case Vent Filter 6.7 Is Necessary
I’ve learned that having a crank case vent filter 6.7 on my engine is crucial for keeping it running smoothly and efficiently. This filter helps trap harmful oil vapors and contaminants before they can re-enter the engine or escape into the environment. Without it, these particles can build up inside the crankcase, leading to sludge formation and reducing my engine’s performance over time.
From my experience, the crank case vent filter also plays a big role in protecting the environment by reducing harmful emissions. It ensures that the blow-by gases are cleaned before being vented, which means fewer pollutants are released into the air. This not only helps my engine stay healthy but also supports cleaner air quality around me.
Overall, I consider the crank case vent filter 6.7 a small but essential part that safeguards my engine’s longevity and keeps emissions in check. It’s one of those components that might seem minor but makes a significant difference in maintaining reliable and eco-friendly engine operation.
My Buying Guides on Crank Case Vent Filter 6.7
When I first needed a crank case vent filter for my 6.7 engine, I realized there were quite a few factors to consider to get the right one. After some research and hands-on experience, I’d like to share what I’ve learned to help you make a smart purchase.
Understanding What a Crank Case Vent Filter Does
Before buying, I made sure I understood the purpose of the crank case vent filter. It helps filter out oil vapors and contaminants from the crankcase gases before they re-enter the intake system or vent outside. This keeps the engine cleaner and reduces emissions, which is especially important for a 6.7-liter diesel engine.
Compatibility with 6.7 Engines
One of the first things I checked was if the filter is compatible with my 6.7 engine model, whether it’s for a Ford Powerstroke or another diesel engine. The size, fittings, and flow capacity need to match to ensure proper ventilation and avoid pressure build-up.
Filter Quality and Material
I prefer filters made with durable materials that can withstand high temperatures and oil exposure without breaking down. Look for filters with quality media that can trap fine particles effectively. Some filters offer reusable or replaceable elements which can be cost-effective in the long run.
Ease of Installation
Since I’m not a professional mechanic, I looked for a crank case vent filter that was easy to install with basic tools. Some filters come with clear instructions and all necessary fittings, which saved me time and hassle.
Maintenance and Longevity
I also considered how often the filter needs to be replaced or cleaned. A longer service interval means less frequent maintenance, which I appreciate. If it’s a reusable filter, I make sure I have the right cleaning supplies on hand.
Brand Reputation and Reviews
I read customer reviews and checked out brands known for reliability in diesel engine parts. A well-reviewed crank case vent filter from a trusted brand gave me confidence that it would perform well and last.
Price and Warranty
Finally, I balanced cost with quality. Sometimes spending a bit more upfront means better durability and fewer problems down the road. I also looked for products with a good warranty to protect my investment.
Final Thoughts
Choosing the right crank case vent filter for a 6.7 engine isn’t complicated once you know what to look for. Make sure it fits your engine, is made from quality materials, easy to install, and comes from a reputable brand. That’s how I found the perfect filter that keeps my engine running clean and smooth.
Author Profile
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I’m Lindsey Lowery, the writer behind littlemanuel.com. Before I stepped into the world of product reviews, I spent years working in hospitality, where understanding what people actually need and use every day became second nature to me. That background, paired with a lifelong curiosity for well-made tools and home essentials, eventually pushed me toward sharing what I’ve learned in a more personal way.
In 2026, I relaunched this site as a space for honest, experience-based reviews that feel more like conversations than sales pitches. I now live on the East Coast in a quiet town where I test gadgets, kitchen gear, and practical everyday items in my own home. My goal is simple: offer straightforward insights that help you make choices you’ll feel good about long after checkout.
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