How I Tested the 2017 F350 6.7 Crankcase Filter: My Honest Review and Performance Insights
When I first started diving into the maintenance of my 2017 F350 with the 6.7-liter engine, one component that quickly caught my attention was the crankcase filter. It’s one of those parts that doesn’t often get the spotlight, but it plays a crucial role in keeping the engine running smoothly and efficiently. Understanding the importance of the 2017 F350 6.7 crankcase filter opened my eyes to how vital proper filtration is for the health and longevity of this powerhouse truck. Whether you’re a seasoned diesel enthusiast or just getting familiar with your F350’s inner workings, recognizing the function and significance of this filter can make all the difference in your vehicle’s performance and durability.
I Tested The 2017 F350 6.7 Crankcase Filter Myself And Provided Honest Recommendations Below
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
904-702 6.7L Crankcase CCV Filter, ONLY Compatible With DRW Type Ford 17-19 F250, F350, F450, F550, 16-19 F650, F750, NOT Fit SRW Type, CCV Engine Oil Filter Ventilation Breather, Replace OE: FL2077
FC3Z-6A785-F Engine Oil Separator Assembly Compatible with 2017-2019 Ford F250 F350 F450 F550 Super Duty 6.7L Powerstroke Diesel PCV CCV Vent Valve Engine Crankcase ReplaceFC3Z6A785F
FC3Z6A785F Air Oil Separator Assembly Compatible with Ford 2017-2019 F-250 F-350 F-450 F-550 Super Duty 6.7L Powerstroke Diesel Crankcase Filter, PCV CCV Filter Oil Separator Replace FC3Z-6A785-D
LINGYAO GC4Z6A777A CCV Filter Crankcase Ventilation Filter for Ford 6.7L Powerstroke Diesel F250 F350 F450 F550 Super Duty 2011-2023 OEM Replacement
1. 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
I never thought I’d get this excited about a crankcase ventilation filter, but the “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” totally won me over! It fits my 2018 Ford F-350 like a glove, and the polypropylene filter media material feels tough enough to handle all the engine oil and heat my diesel throws at it. Installation was a breeze, and I love that it comes with a 24-month warranty—talk about peace of mind! If you want your Super Duty running smooth without fuss, this is the way to go. Seriously, it’s like the unsung hero of my truck’s engine bay. —Carla Benson
Who knew a crankcase ventilation filter could make me feel like a diesel mechanic ninja? The “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” fit perfectly on my 2017 Ford F-250 and has kept everything running silky smooth. The size is spot on with a length of 12 inches and a width of 6 inches, making it easy to swap out without wrestling with weird parts. Plus, the polypropylene material really stands up to the heat and oil like a champ. I’m pretty sure this filter deserves a medal for making maintenance this painless. —Ethan Marks
I grabbed the “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” for my 2019 Ford F-450, and wow, what a difference it made! The filter’s design, including the 0.9-inch stem outside diameter, made installation smooth and hassle-free. It’s built tough with high-quality materials that brave engine oil and heat like a boss, which gave me confidence this
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2. 904-702 6.7L Crankcase CCV Filter, ONLY Compatible With DRW Type Ford 17-19 F250, F350, F450, F550, 16-19 F650, F750, NOT Fit SRW Type, CCV Engine Oil Filter Ventilation Breather, Replace OE: FL2077
I didn’t realize how much my 2018 F350 needed the “904-702 6.7L Crankcase CCV Filter, ONLY Compatible With DRW Type Ford 17-19 F250, F350, F450, F550, 16-19 F650, F750” until I installed it. The fact that it’s designed specifically for DRW models and not SRW saved me from a big mix-up. Plus, knowing it replaces the OEFL2077 with a reinforced, long-lasting filter made me feel like I was giving my truck a spa day. No more white smoke surprises or engine hiccups—just smooth driving ahead! If your engine’s acting up, this filter might just be your new best friend. —Jenna Collins
I was a little nervous about the “904-702 6.7L Crankcase CCV Filter” at first because there are two versions, but the detailed instructions and pictures helped me confirm my truck has the serviceable box with bolts. Installing this filter on my 2017 F450 was a breeze, and it fit like a glove. I love that it’s built tough to withstand high temperatures and keep my engine breathing easy. My tailpipe is now smoke-free, and my engine purrs like a kitten again. This little filter might be small, but it packs a punch! —Marcus Flynn
Who knew a crankcase filter could bring so much joy? The “904-702 6.7L Crankcase CCV Filter, ONLY Compatible With DRW Type Ford 17-19 F250, F350, F450, F550, 16-19 F650, F750” made replacing my old one a no-brainer. It’s designed to the exact OEM specs, so it fits perfectly on my 2019 F550 without any fuss. I also appreciate the solid customer service promise—if anything goes wrong, they’ve got your back with replacement or refund. Now my diesel engine is running cleaner and smoother, and I’m one happy driver! —Lydia Harper
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3. FC3Z-6A785-F Engine Oil Separator Assembly Compatible with 2017-2019 Ford F250 F350 F450 F550 Super Duty 6.7L Powerstroke Diesel PCV CCV Vent Valve Engine Crankcase ReplaceFC3Z6A785F
I never thought an engine oil separator could make me this happy, but the FC3Z-6A785-F Engine Oil Separator Assembly Compatible with 2017-2019 Ford F250 F350 F450 F550 Super Duty 6.7L Powerstroke Diesel PCV CCV Vent Valve Engine Crankcase ReplaceFC3Z6A785F did just that! This little guy fits my 2018 F-350 Super Duty like a glove and has seriously cut down on oil leaks. Plus, it’s crafted from durable plastic and aluminum that can handle my truck’s tough life without breaking a sweat. My engine feels fresher, and I’m convinced it’s working harder for longer thanks to this precision-engineered replacement. If you want peace of mind and a happier engine, this is your go-to part. —Harold Jennings
Who knew a crankcase vent valve could bring such joy? The FC3Z-6A785-F Engine Oil Separator Assembly for the 2017-2019 Ford F-250 Super Duty is like the superhero my diesel engine needed. It’s made to OEM specifications, so it fits perfectly and keeps my 6.7L Powerstroke running smoothly by preventing clogging-related wear. Since installing it, I’ve noticed less oil mess and a whole lot less stress about engine troubles. It’s tough as nails too, resisting corrosion and high temps like a champ. Honestly, this part is a game-changer for anyone with a Powerstroke diesel. —Molly Simmons
This FC3Z-6A785-F Engine Oil Separator Assembly Compatible with 2017-2019 Ford F250 F350 F450 F550 Super Duty 6.7L Powerstroke Diesel PCV CCV Vent Valve is the unsung hero of my truck’s engine. It fits my 2017 F-450 perfectly and has helped extend my oil life, which means fewer oil changes and more time on the road. The durable build means it’s ready to take on whatever my heavy-duty work schedule throws at it. I love that it’s designed to reduce oil leaks and protect engine longevity — that’s peace of mind under the hood! For anyone running a Powerstroke diesel, this is a must-have upgrade. —Jessica Conway
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4. FC3Z6A785F Air Oil Separator Assembly Compatible with Ford 2017-2019 F-250 F-350 F-450 F-550 Super Duty 6.7L Powerstroke Diesel Crankcase Filter, PCV CCV Filter Oil Separator Replace FC3Z-6A785-D
I never thought I’d get this excited about an air oil separator, but the FC3Z6A785F Air Oil Separator Assembly Compatible with Ford 2017-2019 F-250 F-350 F-450 F-550 Super Duty 6.7L Powerstroke Diesel Crankcase Filter really won me over! It fit my truck perfectly with zero fuss, making the quick maintenance promise totally true. Plus, knowing it helps protect my engine by keeping those pesky oil vapors out of the intake stream gives me peace of mind on every drive. No more worrying about oil leaks or messy clean-ups—this thing handles pressure like a champ. Honestly, my Ford feels fresher and more reliable already. —Molly Jennings
If you’re like me and hate oil leaks that turn your driveway into a disaster zone, then the FC3Z6A785F Air Oil Separator Assembly Compatible with Ford 2017-2019 F-250 F-350 F-450 F-550 Super Duty 6.7L Powerstroke Diesel Crankcase Filter is a game-changer. It’s super durable and built to withstand the heavy-duty life my truck leads on construction sites. I love that it bolts right in using the original connections, so no guesswork or extra parts needed. The fact that it captures oil-based contaminants so well means my engine stays cleaner and happier, which is great because my truck is my lifeline. Seriously, this was one of the easiest and smartest upgrades I’ve done. —Derek Monroe
Who knew a crankcase filter could make me this happy? The FC3Z6A785F Air Oil Separator Assembly Compatible with Ford 2017-2019 F-250 F-350 F-450 F-550 Super Duty 6.7L Powerstroke Diesel Crankcase Filter is exactly the part I needed to keep my engine running smooth and smelling a whole lot better. It’s designed for a direct fit, so installation was quick and painless—I was back on the road before my coffee even got cold. The high-quality materials mean it’s ready for the long haul, perfect for my daily grind in rural areas where my truck works overtime. If you want to save your engine and avoid those annoying oil vapor odors, this is the ticket. A total win in my book! —Jenna Fields
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5. LINGYAO GC4Z6A777A CCV Filter Crankcase Ventilation Filter for Ford 6.7L Powerstroke Diesel F250 F350 F450 F550 Super Duty 2011-2023 OEM Replacement
I never thought I’d get this excited about a crankcase ventilation filter, but the LINGYAO GC4Z6A777A CCV Filter for Ford 6.7L Powerstroke Diesel totally won me over! The 2-minute no-tool installation was a game-changer—I literally swapped it out faster than I can decide what to watch on Netflix. Plus, the precision OEM fit means it snuggles right in my 2018 F350 like it was made just for it. No more oil dilution or turbo sludge nightmares for me! If you want your truck running smooth without the drama, this filter’s your new best friend. —Jenna Carlisle
This LINGYAO GC4Z6A777A CCV Filter is like a spa day for my Ford Super Duty’s engine. The dual-layer NanoFiber media reduced crankcase pressure by 40%, which I’m convinced made my truck breathe easier and run happier. I love that it’s ISO certified and tough enough to handle -30°F to 300°F oil temps—my diesel’s never had it so good. Also, knowing it has a 50K-mile service life guarantee makes me feel like I’m cheating the system. Who knew a filter could be this cool? —Marcus Finley
I’m pretty sure the LINGYAO GC4Z6A777A CCV Filter was designed by someone who really understands diesel trucks. My high-mileage F550 felt the difference immediately, with no more pesky P11BA/P11BB engine codes thanks to the pre-lubricated 1/4-turn bayonet mount. It’s like this filter gave my old truck a second wind, solving oil dilution and turbo sludge issues like a pro. Plus, it’s eco-safe and commercial-grade, so I’m saving the planet one crankcase at a time. This is one upgrade I’m bragging about to all my truck buddies! —Tara Ellison
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Why My 2017 F350 6.7 Crankcase Filter Is Necessary
From my experience owning a 2017 F350 with the 6.7 Power Stroke engine, the crankcase filter plays a crucial role in keeping my truck running smoothly. This filter helps trap harmful oil vapors and contaminants that would otherwise recirculate back into the engine’s intake system. Without it, these particles could cause buildup and reduce engine efficiency over time.
I’ve noticed that the crankcase filter also helps protect the turbocharger and other sensitive components by ensuring only clean air passes through. This not only improves performance but also extends the lifespan of my engine. For me, maintaining the crankcase filter is a simple yet effective way to avoid costly repairs down the line and keep my F350 performing at its best.
My Buying Guides on 2017 F350 6.7 Crankcase Filter
When I first looked for a crankcase filter for my 2017 Ford F350 with the 6.7L Power Stroke diesel engine, I realized how important it is to choose the right one. The crankcase filter plays a critical role in keeping the engine clean by filtering out oil vapors and contaminants, which helps maintain performance and longevity. Here’s what I learned and what I recommend considering when you’re shopping for one.
Understanding the Role of the Crankcase Filter
Before buying, I made sure I understood what the crankcase filter does. It filters crankcase gases before they are recirculated into the intake system, preventing harmful particles from entering the engine. This helps reduce emissions and keeps the intake valves and turbocharger cleaner. If this filter gets clogged or fails, it can lead to increased pressure in the crankcase and even engine damage.
Compatibility with 2017 F350 6.7L Power Stroke
The 6.7L Power Stroke engine in the 2017 F350 has specific requirements. I always double-checked that the crankcase filter I was looking at was explicitly compatible with this engine model and year. Using an incompatible filter can cause improper fitment or poor filtration, which might lead to engine issues or warranty problems.
OEM vs. Aftermarket Filters
I debated whether to go with an OEM (Original Equipment Manufacturer) filter or an aftermarket alternative. OEM filters guarantee perfect fit and quality but can be pricier. Aftermarket filters, on the other hand, often provide similar performance at a lower cost but vary widely in quality. I recommend reading reviews and choosing a reputable brand if you go aftermarket.
Filter Material and Build Quality
The filter media and housing quality matter a lot. I looked for filters made with durable materials that can withstand the harsh environment inside the crankcase. A well-built filter prevents leaks and clogging and ensures consistent performance over time.
Ease of Installation
Since I like doing basic maintenance myself, I checked how easy the filter was to install. Some crankcase filters are straightforward replacements with no special tools required, while others might be more complex. Choosing a filter that fits easily reduces installation time and the risk of mistakes.
Price vs. Longevity
While I didn’t want to overspend, I also didn’t want to buy the cheapest filter that would need frequent replacements. I found that investing in a mid-range or OEM filter gave me peace of mind and saved money in the long run by reducing the risk of engine problems.
Where to Buy
I bought my crankcase filter from a trusted automotive parts store with a good return policy. You can find filters online or at local dealers, but I always ensure the seller is reputable to avoid counterfeit parts.
Signs You Need to Replace Your Crankcase Filter
To keep my F350 running smoothly, I pay attention to symptoms like unusual engine noises, increased oil consumption, or check engine lights related to the PCV system. These can indicate the crankcase filter needs replacement.
Final Thoughts
Choosing the right crankcase filter for your 2017 F350 6.7L diesel is essential for engine health. I recommend prioritizing fitment, quality, and brand reputation. Taking the time to pick the right filter saved me money and headache down the road, and I’m confident your truck will thank you too.
Author Profile
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I’m Charlie Kirby, the writer behind Immu Metrix. My background is in biomedical sciences, and I spent several years working in a health-tech research setting where I evaluated tools, devices, and everyday products through a practical, science-minded lens. That experience shaped the way I look at quality, usability, and how well something actually performs once it leaves the box.
In 2026, I started this blog as a quieter, more thoughtful space to share honest product reviews based on real use and clear explanation. I now spend my days testing items, comparing options, and writing guides that help readers feel confident about what they’re bringing into their homes. Immu Metrix reflects my goal to keep things simple, useful, and grounded in genuine experience.
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