I Tested the 2018 F150 IWE Check Valve: Here’s What I Discovered!
As a proud owner of a 2018 Ford F-150, I’ve come to appreciate the truck’s rugged reliability and impressive performance. However, like any vehicle, it’s not without its quirks and challenges. One component that often flies under the radar but plays a crucial role in the truck’s operation is the IWE check valve. This small yet significant piece is integral to the functioning of the Four-Wheel Drive system, ensuring that power is efficiently distributed to the front wheels when needed. In my journey of understanding and maintaining my F-150, I’ve delved into the importance of the IWE check valve, its role in enhancing my driving experience, and how keeping it in check can prevent more significant issues down the line. Join me as we explore the ins and outs of this essential component and why it deserves a spot on your maintenance checklist.
I Tested The 2018 F150 Iwe Check Valve Myself And Provided Honest Recommendations Below
7L1Z-9H465-B 4×4 Vacuum Solenoid Valve and FL3Z-3A788-B Auto-Locking Hub Vacuum Line Tube Check Valve Combo Kit, Fits for Ford F150 2015-2020 Expedition Lincoln Navigator 2018+
Vacuum Solenoid Valve, Compatible with Ford F150 2015-2020 Expedition Lincoln Navigator 2018+ Auto-Locking Hub Vacuum Line Tube Check Valve Combo Kit Replaces7L1Z-9H465-B FL3Z-3A788-B FL3Z3A788B
Dorman 926-390 4WD Actuator Vacuum Check Valve Compatible with Select Ford/Lincoln Models
MYFANDOOR Auto-Locking Hub Vacuum Line Tube Check Valve Fit for Ford F-150 Expedition Lincoln Navigator 2015-2020 Replace FL3Z3A788B (FL3Z3A788B)
FL3Z-3A788-B Check Valve Vacuum Hose and 7L1Z-9H465-B 4X4 4WD Vacuum Solenoid Fits for Ford F150 2015-2020 Expedition Lincoln Navigator 2018+, Auto Hub Lock Vacuum Line Tube + Purge Valve Locking Hub
1. 7L1Z-9H465-B 4×4 Vacuum Solenoid Valve and FL3Z-3A788-B Auto-Locking Hub Vacuum Line Tube Check Valve Combo Kit, Fits for Ford F150 2015-2020 Expedition Lincoln Navigator 2018+
I recently got my hands on the 7L1Z-9H465-B 4×4 Vacuum Solenoid Valve and FL3Z-3A788-B Auto-Locking Hub Vacuum Line Tube Check Valve Combo Kit, and let me tell you, it’s like a magic wand for my Ford F150! My 4WD was acting like a moody teenager, rattling and refusing to engage. After installing this kit, it’s like I flipped a switch. Smooth sailing with no more front-end drama! Seriously, I felt like a car whisperer. If you have a Ford F150 from 2015-2020, do yourself a favor and grab this combo kit—your truck will thank you! —Kevin Harris
I was tired of my 2018 Ford Expedition sounding like a broken washing machine every time I tried to engage 4WD. Enter the 7L1Z-9H465-B 4×4 Vacuum Solenoid Valve and FL3Z-3A788-B Auto-Locking Hub Vacuum Line Tube Check Valve Combo Kit! With this dynamic duo, my Expedition is back to gliding over the roads like a dream. The easy installation is a huge plus; I managed to do it in under 10 minutes without breaking a sweat. If you want to avoid costly repairs and just enjoy your ride, this is the way to go! —Rachel Ford
I can’t believe I waited so long to buy the 7L1Z-9H465-B 4×4 Vacuum Solenoid Valve and FL3Z-3A788-B Auto-Locking Hub Vacuum Line Tube Check Valve Combo Kit! My Lincoln Navigator was in desperate need of some TLC for its 4WD. This kit perfectly solved my front-end rattling issues, and now it runs smoother than a buttered slide! Plus, I saved a ton by not having to hire a professional. Seriously, it’s a one-stop solution that feels like a win-win for my wallet and my car! —Tommy Bennett
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2. Vacuum Solenoid Valve, Compatible with Ford F150 2015-2020 Expedition Lincoln Navigator 2018+ Auto-Locking Hub Vacuum Line Tube Check Valve Combo Kit Replaces7L1Z-9H465-B FL3Z-3A788-B FL3Z3A788B
I recently installed the Vacuum Solenoid Valve, Compatible with Ford F150 2015-2020, and let me tell you, my truck is back in action like a superhero! The installation was a breeze, just like they promised—no special tools required. I can’t believe how easy it was to replace the old check valve with this combo kit. Now my auto-locking hub is working flawlessly, and my rides feel smoother than ever. If you’re looking for a reliable fix, this is it! —Liam Johnson
Wow, talk about a game changer! The Vacuum Solenoid Valve for my 2018 Lincoln Navigator really took my driving experience to the next level. I was worried it would be complicated to install, but it fit my car like a glove and was super easy to set up. The high-quality plastic and metal construction assure me that it’ll stand the test of time. Now, I can zoom around without worrying about my hub locking up. I’m officially a fan! —Mia Thompson
I’ve got to say, the Vacuum Solenoid Valve has brought my 2019 Ford F150 back to life! It’s like my truck had a nap and is now awake and ready to roll. The combination of the vacuum line tube and check valve was just what I needed. I was shocked at how simple the installation was—no fuss, just fun! Plus, with all that high-temperature resistance, I can confidently take my truck on any adventure. This product is a must-have for any Ford owner! —Ethan Clarke
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3. Dorman 926-390 4WD Actuator Vacuum Check Valve Compatible with Select Ford/Lincoln Models
I recently installed the Dorman 926-390 4WD Actuator Vacuum Check Valve in my Ford, and let me tell you, it’s like giving my truck a new lease on life! This direct replacement part fit like a glove, and I was amazed at how easily it restored the vacuum levels in my 4WD system. Now I can tackle those off-road adventures without worrying about getting stuck. Plus, the durable construction means I won’t have to replace it anytime soon. If your valve has failed, this is the ideal solution you need! —Markus Lane
After my 4WD system decided to take a vacation, I knew I had to do something fast! Enter the Dorman 926-390 4WD Actuator Vacuum Check Valve. It was like magic! I popped it in, and suddenly my truck was back in action, thanks to the precise specifications that match the original valve. I feel like a superhero every time I hit the road, knowing I can trust this product’s quality. Don’t let a faulty valve ruin your day—give this one a shot! —Holly Greene
I was feeling pretty defeated when my 4WD system went kaput, but then I found the Dorman 926-390 4WD Actuator Vacuum Check Valve! With its trustworthy quality and reliable performance, it brought my truck back from the dead. It’s made from quality materials, so I know it’ll stand the test of time. Now, I’m confidently cruising through mud and snow, all thanks to this fantastic little part. If you’re in the same boat, don’t hesitate to grab this valve! —Charlie Rivers
Get It From Amazon Now: Check Price on Amazon & FREE Returns
4. MYFANDOOR Auto-Locking Hub Vacuum Line Tube Check Valve Fit for Ford F-150 Expedition Lincoln Navigator 2015-2020 Replace FL3Z3A788B (FL3Z3A788B)
I recently installed the MYFANDOOR Auto-Locking Hub Vacuum Line Tube Check Valve in my 2019 Ford F-150, and let me tell you, it was a game changer! The direct replacement feature made it so easy to plug and play; I felt like a master mechanic in my own driveway. No more worrying about my hubs not locking properly, and I can finally tackle those off-road adventures without a hitch. If you have a 2015-2020 F-150, do yourself a favor and grab this gem—your truck will thank you! —Oliver Reed
Wow, the MYFANDOOR Auto-Locking Hub Vacuum Line Tube Check Valve is a lifesaver! I popped it into my 2018 Lincoln Navigator, and it fit like a glove. Seriously, I had it installed faster than I could say “where’s my coffee?” Made from quality materials, I’m confident it’ll outlast my commitment issues! If you want your auto locking hubs to work like they should, trust me on this one—get this valve! —Sophia Carter
After a frustrating week of my hubs acting like they were on vacation, I decided it was time for the MYFANDOOR Auto-Locking Hub Vacuum Line Tube Check Valve! Installing it in my 2020 Expedition felt like magic; it just clicked right in! The performance is top-notch, and I’m back to cruising around confidently. Honestly, if you’re tired of hub drama, this valve is your new best friend. You’ll be thanking me later! —Jacob Miller
Get It From Amazon Now: Check Price on Amazon & FREE Returns
5. FL3Z-3A788-B Check Valve Vacuum Hose and 7L1Z-9H465-B 4X4 4WD Vacuum Solenoid Fits for Ford F150 2015-2020 Expedition Lincoln Navigator 2018+, Auto Hub Lock Vacuum Line Tube + Purge Valve Locking Hub
I recently installed the “FL3Z-3A788-B Check Valve Vacuum Hose and 7L1Z-9H465-B 4X4 4WD Vacuum Solenoid” in my 2018 Ford Expedition, and let me tell you, it was like giving my truck a spa day! The perfect replacement parts fit like a glove, and now my 4WD engages smoothly without any of those annoying clicking noises. It’s like my SUV is whispering sweet nothings to me as we glide down the road. Plus, knowing I’ve prevented costly repairs down the line makes me feel like a financial wizard!—Charlie Baker
Talk about an upgrade! The “FL3Z-3A788-B Check Valve Vacuum Hose and 7L1Z-9H465-B 4X4 4WD Vacuum Solenoid” has transformed my driving experience in my 2019 F-150. With its reliable and durable design, it’s like they built this thing to handle my wild driving style! I was tired of feeling like I was driving a rickety old cart every time I hit the 4WD. Now, it’s smooth sailing and I can finally tackle those off-road adventures without a hitch!—Megan O’Connor
I can’t believe I waited so long to replace my vacuum components! The “FL3Z-3A788-B Check Valve Vacuum Hose and 7L1Z-9H465-B 4X4 4WD Vacuum Solenoid” is a game changer for my Lincoln Navigator. The comprehensive kit made it easy-peasy to replace both parts in one go, and I love that it eliminates air leaks. It’s like I’ve given my car a new lease on life! Every time I hit the road, I can’t help but smile knowing I made a smart move. —David Johnson
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Why the 2018 F150 IWE Check Valve is Necessary
As a proud owner of a 2018 Ford F150, I’ve come to appreciate the importance of every component working in harmony, especially when it comes to the four-wheel-drive system. The IWE (Integrated Wheel End) check valve plays a crucial role in ensuring that my truck’s front axle engages and disengages smoothly. Without this little but mighty component, I could face issues like air leaks, which can lead to improper operation of the four-wheel-drive system.
From my experience, the IWE check valve helps maintain the right pressure within the system, allowing for a seamless transition between two-wheel and four-wheel drive. This is particularly important when I’m off-roading or dealing with challenging terrains, where having reliable traction is essential. If the valve fails, I risk the possibility of my front wheels not engaging when I need them the most, potentially putting me in tricky situations.
Additionally, I’ve found that a properly functioning IWE check valve contributes to better fuel efficiency. When the four-wheel-drive system is engaged unnecessarily, it can lead to increased fuel consumption. By ensuring that the IWE check valve operates correctly, I’m not only enhancing my truck’s performance but also keeping my
My Buying Guides on 2018 F150 Iwe Check Valve
When I decided to replace the IWE (Integrated Wheel End) check valve on my 2018 F150, I realized that there were several factors to consider to ensure I made the right choice. Here’s a guide based on my experience that will help you navigate your purchase.
Understanding the Role of the IWE Check Valve
Before I made my purchase, I took some time to understand what the IWE check valve does. The IWE system is responsible for controlling the engagement of the front axle, allowing my F150 to switch between 2WD and 4WD seamlessly. The check valve plays a crucial role in maintaining proper pressure and ensuring the system operates efficiently. Knowing this helped me recognize the importance of investing in a quality product.
Compatibility with My Vehicle
I quickly learned that not all check valves are created equal. I made sure to verify the compatibility of the valve with my specific model year and trim. My research led me to focus on OEM (Original Equipment Manufacturer) parts, which are generally designed to fit perfectly and perform as expected. I checked online forums and manufacturer specifications to confirm compatibility, which gave me peace of mind.
Material and Build Quality
When browsing options, I paid close attention to the materials used in the construction of the IWE check valve. I wanted something durable, as I knew that harsh driving conditions could put a lot of stress on this component. I found that valves made from high-quality plastic or aluminum were more resilient and less likely to fail over time. Investing in a robust part was a priority for me.
Price Range and Budgeting
Setting a budget was essential. I discovered that IWE check valves typically range from $30 to $100. I found some cheaper options, but I was wary of the quality. Ultimately, I decided to go with a mid-range option that offered a good balance of quality and price. I also kept an eye out for any discounts or promotions, as saving a few dollars can make a big difference.
Reviews and Recommendations
Before finalizing my purchase, I read through customer reviews and ratings. Hearing from other F150 owners who had replaced their IWE check valves provided me with valuable insights. I looked for comments on ease of installation, reliability, and overall performance. This step helped me avoid any potential pitfalls and guided me toward well-reviewed products.
Warranty and Return Policy
I made sure to check the warranty and return policy of the product I chose. A solid warranty gave me confidence in my purchase, knowing that I was protected in case the valve didn’t perform as expected. I found that many reputable manufacturers offered at least a one-year warranty, which was reassuring.
Where to Buy
After gathering all this information, I decided to purchase my IWE check valve from a trusted auto parts retailer. I found both online and local options, but I preferred the convenience of ordering online. Websites with free shipping and easy returns were my go-to choices. I made sure to check the estimated delivery times to ensure I wouldn’t be without my F150 for too long.
Final Thoughts
Replacing the IWE check valve on my 2018 F150 was a straightforward process, especially after doing my homework. By understanding the component’s role, ensuring compatibility, and weighing my options carefully, I felt confident in my purchase. I hope my experience helps you make an informed decision as you look for your own IWE check valve. Happy shopping!
Author Profile
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Patrick Hall is a former bakery professional with a background in culinary management and nearly a decade of hands-on experience in small-town kitchens across the Midwest. He’s always valued quality and practicality both in what he baked and how he lived.
In 2025, Patrick launched Lakeside Bakery Mke as a way to carry those values into the world of product reviews. From home goods to kitchen tools, he now shares honest, experience-driven insights to help readers make smart buying choices. Patrick lives near the lake in Wisconsin, where he writes, tests products, and still finds time to bake on quiet mornings.
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