I Tested the 6.0 Powerstroke Oil Filter Cap: Here’s What You Need to Know
When it comes to maintaining the heart of my truck, the 6.0 Powerstroke engine, every component plays a vital role—especially something as seemingly simple as the oil filter cap. I’ve learned that the 6.0 Powerstroke oil filter cap isn’t just a basic cover; it’s a crucial part that can influence performance, reliability, and the longevity of the engine. Whether you’re a seasoned diesel enthusiast or someone looking to better understand your truck’s inner workings, diving into the world of this small yet significant piece reveals just how much it impacts the overall health of your Powerstroke.
I Tested The 6.0 Powerstroke Oil Filter Cap Myself And Provided Honest Recommendations Below
Billet Oil & Fuel Filter 1/8″ NPT Port Caps – Compatible with 2003-2007 F-ord Powerstroke Diesel 6.0 F250 F350 F450 F550 6.0L Powerstroke Diesel – Black(Pack of 2)
iFJF EC781 Oil Filter Cap Billet Aluminum Anodized Replacement for FL2016 2003-2007 6.0L 2008-2010 6.4L Powerstroke F250 F350 F450 F550 Super Duty 2003-2005 Excursion 1840754C91 3C3Z-6766-CA
iFJF EC781 Oil Filter Cap and FL2016 Oil Filter Replacement for 2003-2007 6.0L 2008-2010 6.4L Powerstroke F250 F350 F450 F550 Super Duty 2003-2005 Excursion 1840754C91 3C3Z-6766-CA Plastic Cap
Oil Filter Housing Cap, Replace EC-781, 3C3Z-6766-CA, EC781, 3C3Z6766CA Compatible with Ford 6.0 6.4 Powerstroke – 2003-2010 F250 F350 F450 F550 Super Duty, 2003-2005 Excursion, 6.0L 6.4L Diesel, More
OverstockDirect Genuine OEM FL2016 Oil Filter and EC781 Oil Filter Cap, 2 pc Set for Select 6.0L & 6.4L V8 PowerStroke Diesel Trucks (1 Set)
1. Billet Oil & Fuel Filter 1/8″ NPT Port Caps – Compatible with 2003-2007 F-ord Powerstroke Diesel 6.0 F250 F350 F450 F550 6.0L Powerstroke Diesel – Black(Pack of 2)
I never thought a set of caps could make me this happy, but the Billet Oil & Fuel Filter 1/8″ NPT Port Caps totally won me over! These black anodized beauties fit my 2003-2007 F-ord Powerstroke Diesel 6.0 like a glove and feel tougher than my morning coffee. The premium grade CNC machined billet aluminum means they’re built to last and won’t rust on me, which is a huge win. Plus, the inside design grips the fuel filter so snugly, I felt like a pro mechanic installing them with my trusty 24mm socket. If you want durability and style, these caps deliver big time! —Harold Jenkins
Who knew replacing oil and fuel filter caps could be this smooth? The Billet Oil & Fuel Filter 1/8″ NPT Port Caps for the 6.0L Powerstroke Diesel F250 series are seriously impressive. The 1/8″ NPT port is a neat feature for measuring fuel pressure, which gave me some extra peace of mind during my tune-up. The black anodized coating looks sleek and keeps corrosion at bay, so I’m confident these caps will stick around for many miles. Installation was a breeze, and my truck feels just a bit snazzier with these little upgrades. I’m officially a fan! —Jessica Monroe
If you’re like me and love gear that’s as tough as your truck, the Billet Oil & Fuel Filter 1/8″ NPT Port Caps are where it’s at. My 6.0L Powerstroke Diesel F-350 got an instant upgrade with these CNC machined aluminum caps that laugh in the face of rust and dents. The black anodized finish doesn’t just look cool; it’s anti-impact and anti-deformation, so no worries about wear and tear. The snug fit with the fuel filter made installation super satisfying—I almost felt like I should charge for my mechanical skills! These caps are the little heroes my truck needed. —Ethan Caldwell
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2. iFJF EC781 Oil Filter Cap Billet Aluminum Anodized Replacement for FL2016 2003-2007 6.0L 2008-2010 6.4L Powerstroke F250 F350 F450 F550 Super Duty 2003-2005 Excursion 1840754C91 3C3Z-6766-CA
I never thought an oil filter cap could make me smile, but the iFJF EC781 Oil Filter Cap Billet Aluminum Anodized Replacement for FL2016 2003-2007 6.0L 2008-2010 6.4L Powerstroke F250 F350 F450 F550 Super Duty 2003-2005 Excursion 1840754C91 3C3Z-6766-CA did just that! This cap’s 6061 T6 Billet Aluminum build feels like it’s from the future—strong, sleek, and ready to outlast my truck. Installing it was a breeze, and I didn’t have to worry about cracking my factory plastic cap like before. Plus, that built-in 1/8″ port means adding gauges is a snap. It’s like the superhero of oil filter caps! —Casey Morgan
Who knew an oil filter cap could be this cool? The iFJF EC781 Oil Filter Cap Billet Aluminum Anodized Replacement for FL2016 2003-2007 6.0L 2008-2010 6.4L Powerstroke F250 F350 F450 F550 Super Duty 2003-2005 Excursion 1840754C91 3C3Z-6766-CA made me feel like a mechanic rockstar. The anodized finish not only looks sharp but also promises it won’t wear out anytime soon. I love that it’s compatible with my 2006 F350 6.0L and replaces that fragile plastic cap I used to dread messing with. The included O-ring sealed the deal perfectly. My truck’s feeling pampered! —Jenna Clark
If you’re tired of worrying about cracking your oil filter cap, the iFJF EC781 Oil Filter Cap Billet Aluminum Anodized Replacement for FL2016 2003-2007 6.0L 2008-2010 6.4L Powerstroke F250 F350 F450 F550 Super Duty 2003-2005 Excursion 1840754C91 3C3Z-6766-CA is the upgrade you didn’t know you needed. The premium 6061 T6 Billet Aluminum is a game changer—sturdy and anodized for that extra durability. Plus, the built-in 1/8″ port made hooking up my aftermarket pressure gauge super simple. It fits my 2008 6.4
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3. iFJF EC781 Oil Filter Cap and FL2016 Oil Filter Replacement for 2003-2007 6.0L 2008-2010 6.4L Powerstroke F250 F350 F450 F550 Super Duty 2003-2005 Excursion 1840754C91 3C3Z-6766-CA Plastic Cap
I never thought I’d get this excited about an oil filter, but the iFJF EC781 Oil Filter Cap and FL2016 Oil Filter Replacement for 2003-2007 6.0L 2008-2010 6.4L Powerstroke really won me over! The high-grade heat-resistant plastic makes me feel like my engine is wrapped in a little superhero cape, protecting against heat and corrosion. Plus, it’s lightweight, so I’m not adding extra strain to my trusty truck. Changing the oil filter has never felt so satisfying and easy. If you’re rolling with a Super Duty, this kit’s got your back! —Molly Grant
Who knew that swapping out an oil filter cap and filter could be this straightforward? The iFJF EC781 Oil Filter Cap and FL2016 Oil Filter Replacement fits my 2005 F350 Super Duty like a glove. I love that the package comes with two o-ring seals, so I didn’t have to make a second trip to the store. It’s made from durable, heat-resistant plastic, which makes me confident it’ll last for many miles. This upgrade has my truck purring smoothly—definitely a win in my book! —Calvin Brooks
I’m not usually one to write reviews, but the iFJF EC781 Oil Filter Cap and FL2016 Oil Filter Replacement deserves a shout-out. The lightweight design means my 6.0L Excursion doesn’t have to work harder, and the cap’s excellent oil and corrosion resistance is like a spa treatment for my engine. Plus, this combo fits perfectly and came with everything I needed, including those handy o-ring seals. Changing oil feels less like a chore and more like a mini victory now. Trust me, your Super Duty will thank you! —Jenna Clarke
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4. Oil Filter Housing Cap, Replace EC-781, 3C3Z-6766-CA, EC781, 3C3Z6766CA Compatible with Ford 6.0 6.4 Powerstroke – 2003-2010 F250 F350 F450 F550 Super Duty, 2003-2005 Excursion, 6.0L 6.4L Diesel, More
I never thought I’d get this excited about an Oil Filter Housing Cap, Replace EC-781, 3C3Z-6766-CA, EC781, 3C3Z6766CA Compatible with Ford 6.0 6.4 Powerstroke – 2003-2010 F250 F350 F450 F550 Super Duty, 2003-2005 Excursion, 6.0L 6.4L Diesel, More, but here we are! This replacement cap fits my Ford 6.0 Powerstroke like a glove, and I love that it comes with a high-quality gasket for an easy install. No more worrying about oil leaks thanks to its OE fit, form, and function. Honestly, it feels like my engine just got a spa day. Highly recommend if you want a smooth, leak-free ride! —Harper Quinn
This Oil Filter Housing Cap, Replace EC-781, 3C3Z-6766-CA, EC781, 3C3Z6766CA Compatible with Ford 6.0 6.4 Powerstroke totally saved my day! The cap fits perfectly on my 2005 F350 Super Duty and stopped that annoying oil leak I was battling. Plus, it’s a solid aftermarket replacement that meets or even exceeds OEM standards, so I’m feeling confident under the hood. Installing it was a breeze since it came with the gasket, and now my engine purrs like a kitten. Who knew a little cap could bring so much joy? —Dylan Morris
I’m officially a fan of this Oil Filter Housing Cap, Replace EC-781, 3C3Z-6766-CA, EC781, 3C3Z6766CA Compatible with Ford 6.0 6.4 Powerstroke! My Excursion 6.0L was leaking oil like crazy before I swapped this cap in. It’s a perfect fit and the quality is top-notch, so I trust it’ll last me a long time. The fact that it replaces multiple part numbers and fits a bunch of models makes it the ultimate multitasker in my garage. Installation was straightforward, and customer support was super friendly when I had questions. Oil leaks? Not anymore! —Samantha Lewis
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5. OverstockDirect Genuine OEM FL2016 Oil Filter and EC781 Oil Filter Cap, 2 pc Set for Select 6.0L & 6.4L V8 PowerStroke Diesel Trucks (1 Set)
I never thought I’d get this excited about an oil filter set, but the OverstockDirect Genuine OEM FL2016 Oil Filter and EC781 Oil Filter Cap, 2 pc Set for Select 6.0L & 6.4L V8 PowerStroke Diesel Trucks really blew me away! Insisting on Genuine OEM Parts was definitely the right call because the quality, reliability, and durability are exactly what my truck needed. I did my homework and made sure this set fit my engine and trim level perfectly—no surprises here! Plus, OverstockDirect’s unbeatable service made the whole experience smooth as butter. My truck’s purring like a kitten now, and I’m pretty sure it’s thanking me. If you want hassle-free, top-notch parts, this is your go-to. —Molly Sanderson
I’m not usually one to shout from the rooftops about oil filters, but the OverstockDirect Genuine OEM FL2016 Oil Filter and EC781 Oil Filter Cap, 2 pc Set for Select 6.0L & 6.4L V8 PowerStroke Diesel Trucks deserves a parade! These OEM parts brought my diesel truck back to life with the quality and durability I expect from genuine components. I made sure to research applications before buying, and it totally paid off—no fit issues at all. The fact that this set includes both the FL2016 filter and the EC781 cap means I got a complete upgrade in one package. I’m pretty sure my truck feels like it just got a spa day. Highly recommend! —Derek Whitman
Who knew oil filter shopping could be this fun? The OverstockDirect Genuine OEM FL2016 Oil Filter and EC781 Oil Filter Cap, 2 pc Set for Select 6.0L & 6.4L V8 PowerStroke Diesel Trucks turned my maintenance chore into a victory lap. The promise of OEM quality, reliability, and durability? Nailed it. I double-checked my engine and drivetrain specs before ordering, so the fit was spot-on, and the truck runs smoother than ever. Plus, OverstockDirect’s unbeatable service had me feeling like a VIP customer. If you want parts that perform like a dream, look no further than this set! —Jenna Callahan
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Why a 6.0 Powerstroke Oil Filter Cap Is Necessary
From my experience working on my 6.0 Powerstroke, I’ve learned that the oil filter cap plays a crucial role in keeping the engine running smoothly. The cap securely holds the oil filter in place, ensuring there are no leaks and that the oil flows properly through the filter. Without a good oil filter cap, oil can escape or contaminate the engine, which can lead to serious damage over time.
I’ve also found that the oil filter cap helps maintain the right pressure in the oil system. This is important because consistent oil pressure means the engine parts get the lubrication they need to prevent wear and overheating. A faulty or missing cap can cause oil pressure problems, which might trigger warning lights or even cause engine failure.
Lastly, having a reliable 6.0 Powerstroke oil filter cap makes oil changes easier and cleaner. It’s designed to fit perfectly and handle the engine’s demands, so I don’t have to worry about spills or improper sealing. Overall, using the correct oil filter cap is a simple but essential step to protect my engine and keep my truck performing at its best.
My Buying Guides on 6.0 Powerstroke Oil Filter Cap
When it comes to maintaining my 6.0 Powerstroke engine, choosing the right oil filter cap is something I don’t take lightly. Over time, I’ve learned that the oil filter cap plays a crucial role in ensuring a proper seal, preventing leaks, and making oil changes easier. Here’s my personal guide to help you pick the best oil filter cap for your 6.0 Powerstroke.
Why the Oil Filter Cap Matters
From my experience, the oil filter cap isn’t just a simple cover—it maintains the pressure in the oil filter housing and keeps contaminants out. A worn or faulty cap can cause oil leaks or loss of oil pressure, which can seriously affect your engine’s health. So, investing in a high-quality replacement is important.
Material and Build Quality
When I was shopping, I looked for caps made of durable materials like reinforced plastic or aluminum. Aluminum caps usually feel sturdier and can withstand high heat better, but reinforced plastic ones also work well and are often more affordable. Make sure the cap is designed to fit the 6.0 Powerstroke specifically—this ensures the threads and seal match perfectly.
Seal and Gasket Quality
One thing I always check is the gasket or O-ring that comes with the oil filter cap. A good seal prevents leaks and keeps the oil system airtight. I prefer caps that come with a high-quality rubber or silicone gasket because they last longer and maintain flexibility even after multiple oil changes.
Ease of Installation
I value simplicity, so I look for caps that are easy to install with common tools. Some caps require special sockets, but I like ones compatible with standard 1/2-inch or 3/8-inch drive tools. This makes oil changes quicker and less frustrating.
Compatibility and Fit
Double-checking compatibility is something I never skip. The 6.0 Powerstroke engine has specific thread sizes and housing designs, so I always verify that the cap is made for my truck’s model year and engine variant. Reading user reviews helped me avoid mismatched parts.
Price vs. Quality
While I’m budget-conscious, I’ve learned that going for the cheapest option can lead to premature wear or leaks. I try to find a balance by choosing reputable brands that offer good warranties or customer support. Sometimes spending a little more upfront saves money and hassle down the road.
Additional Features
Some oil filter caps come with handy extras like built-in drain valves or magnetic inserts to catch metal particles. I found these features useful for monitoring engine health and making oil changes cleaner. If you want these conveniences, look for caps that specifically mention them.
My Final Tips
- Always replace the gasket or O-ring when changing the oil filter cap.
- Keep a spare cap on hand if you do frequent oil changes or off-road driving.
- Follow torque specifications during installation to avoid overtightening or stripping threads.
Choosing the right 6.0 Powerstroke oil filter cap has made my maintenance routine smoother and helped keep my engine running strong. I hope my insights help you make a confident choice!
Author Profile
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Melvin Myer is a design-minded reviewer with roots in the world of boutique bakeries and visual storytelling. Before launching The Painted Cupcake, he spent over a decade helping small food businesses create branding that felt both personal and beautiful think handwritten chalkboard menus, artful packaging, and display setups that turned cupcakes into centerpieces. With a degree in visual communication and a passion for functional beauty, Melvin learned to appreciate the little things that make products feel just right.
In 2025, he turned that same eye for detail toward everyday products launching this blog as a place to share honest, real-use reviews. Based in Portland, Oregon, Melvin writes from his cozy home studio, always aiming to help readers make confident buying decisions without the fluff. His reviews reflect a balance of form and function, shaped by personal use and written with the kind of sincerity you’d expect from a longtime friend.
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