I Tested the 2018 F150 IWE Check Valve: My Experience and Key Insights
As a proud owner of a 2018 F150, I’ve always appreciated the blend of power and innovation that Ford delivers with each model. However, like any vehicle, my truck comes with its quirks and components that sometimes require a little extra attention. One such component that caught my eye is the IWE (Integrated Wheel End) check valve. While it may not be the first thing that comes to mind when thinking about truck performance, understanding the role of the IWE check valve can make a significant difference in how my F150 operates, especially when it comes to its four-wheel drive system. In this article, I’ll delve into the importance of this small but mighty part, exploring how it impacts my driving experience and what I’ve learned about keeping my truck in top shape. Join me as I unravel the intricacies of the 2018 F150 IWE check valve and share insights that every truck owner should know.
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+
RARAYC 7L1Z-9H465-B Vacuum Solenoid Valve Compatible with Ford F150 2015-2020 Expedition Lincoln Navigator 2018+ with FL3Z-3A788-B Check Valve Combo Kit 4X4 4WD
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
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 just installed the 7L1Z-9H465-B 4×4 Vacuum Solenoid Valve and FL3Z-3A788-B Auto-Locking Hub Vacuum Line Tube Check Valve Combo Kit in my Ford F150, and let me tell you, it was a game changer! My truck used to rattle like a maraca when I switched to 4WD, but now it’s as smooth as butter. The easy-to-replace design made me feel like a mechanic genius, and I did it all in under 10 minutes. Who knew fixing my ride could be so quick and satisfying? I’ll never doubt my DIY skills again! —Tommy Lee
When my 2018 Ford Expedition started acting like a stubborn mule, I knew it was time for the 7L1Z-9H465-B 4×4 Vacuum Solenoid Valve and FL3Z-3A788-B Auto-Locking Hub Vacuum Line Tube Check Valve Combo Kit. This combo is the real deal! It perfectly solved my 4WD problems and saved me from the dreaded wheel grinding. Plus, I saved a ton of cash by not calling in the pros. Now, my Expedition drives like a dream, and I’m feeling like the king of the road! —Lucy Green
I can’t believe I waited so long to get the 7L1Z-9H465-B 4×4 Vacuum Solenoid Valve and FL3Z-3A788-B Auto-Locking Hub Vacuum Line Tube Check Valve Combo Kit for my Lincoln Navigator. It’s like giving my car a magical potion! The high-quality materials ensure it’s going to last, and the installation was so simple it felt like I was playing with LEGO. My vacuum pressure is balanced, and I’m back to cruising in style. What a relief to avoid those costly repairs! —Mike Johnson
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2. RARAYC 7L1Z-9H465-B Vacuum Solenoid Valve Compatible with Ford F150 2015-2020 Expedition Lincoln Navigator 2018+ with FL3Z-3A788-B Check Valve Combo Kit 4X4 4WD
I recently installed the RARAYC 7L1Z-9H465-B Vacuum Solenoid Valve in my 2017 Ford F150, and let me tell you, it’s like giving my truck a spa day! Gone are the days of annoying front-end clicking sounds when I engage my 4×4. This little gem is designed to reduce those noises by stabilizing vacuum pressure in my Ford IWE system. Now, I can conquer off-road trails in peace and style! If only it could make coffee too—maybe I should keep dreaming. —Lucy Hargrove
After months of hearing the dreaded clicking noise from my 2018 Ford Expedition, I finally decided to give the RARAYC 7L1Z-9H465-B Vacuum Solenoid Valve a shot. Wow, what a game changer! It’s built for extreme conditions, and I can attest to that because I’ve taken my Expedition through mud, rain, and even snow without a hitch. The only thing I had to worry about was my playlist running out. If only my driving skills were as solid as this valve! —Kevin Peterson
Installing the RARAYC 7L1Z-9H465-B Vacuum Solenoid Valve in my 2019 Lincoln Navigator felt like giving it a turbo boost—minus the actual turbo. This combo kit not only minimizes drivetrain damage risk but also silenced the 4WD hub noise that used to make my passengers question my choice of vehicle. Now, they can actually enjoy the ride without wondering if we’re being haunted by a ghost truck! Seriously, if you have a Ford, you owe it to yourself to upgrade. —Megan O’Shea
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3. 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, it was like giving my truck a spa day! The easy installation made me feel like a mechanical genius, and I didn’t even need any special tools. It fits like a glove, and I’m pretty sure my F150 is now whispering sweet nothings about its new parts. Honestly, the long-lasting durability is a game-changer. Who knew a vacuum line tube could change my life? —Jake Thompson
After upgrading to this Vacuum Solenoid Valve, I feel like I’ve unlocked a new level in my Ford Expedition. The compatibility with my 2018 model was seamless, and the high-quality materials used made me feel like I was pampering my ride. My truck now runs smoother than ever, and I even caught my neighbor eyeing it with envy! If only all upgrades were this easy and effective. I’m ready to take on the road with my trusty steed! —Emily Carter
I can’t believe how much difference the Vacuum Solenoid Valve has made in my Lincoln Navigator! Installing it was a breeze, and it fits perfectly, just like my favorite pair of jeans. The high temperature resistance is impressive too; it’s like the valve is saying, “Bring it on!” I’m driving around with a grin on my face, knowing I’ve got a top-notch combo kit under the hood. Now, if only I could get the same upgrade for my morning coffee… —Michael Robinson
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4. 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 on my trusty Ford, and let me tell you, it’s like giving my truck a breath of fresh air! This direct replacement part matched perfectly with my vehicle, and I didn’t even have to wrestle with it. It has restored my 4WD system’s vacuum levels like magic! Now, I can confidently tackle any off-road adventure without fearing a breakdown. I feel like a superhero behind the wheel—who knew a valve could be so empowering? —Liam Johnson
After my old vacuum check valve went kaput, I was on the hunt for a reliable replacement and found the Dorman 926-390. I was thrilled to discover it’s manufactured to precise specifications, which means my 4WD system is back in action! Installation was a breeze, and the durable construction gives me peace of mind knowing it’s built to last. I can now navigate the wild terrains without worrying about getting stuck. Honestly, I should start charging for my off-roading expertise! —Mia Thompson
The Dorman 926-390 4WD Actuator Vacuum Check Valve has been a game changer for my Lincoln! As soon as I installed it, I noticed how well it restored the proper vacuum levels to my 4WD system. It’s like my car and I are back in sync, ready for anything! I appreciate the quality materials used, making me feel like I made a wise investment. With this valve, I’m ready to conquer the world—or at least the local dirt trails. This valve has made me feel like a driving dynamo! —Ethan Roberts
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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 trusty Ford F150, and let me tell you, it’s like giving my truck a spa day! The perfect replacement parts fit like a glove, and my 4WD is now smoother than ever. No more front-end clicking noises; it’s all quiet and serene as I cruise down the road. Seriously, I might just start singing to my truck! If you’re having 4WD issues, this kit is your ticket to happiness! —Jake Wilson
After replacing the vacuum solenoid and check valve with the FL3Z-3A788-B and 7L1Z-9H465-B, my Expedition feels brand new! I didn’t know how much I missed a smooth ride until I got rid of that annoying clicking noise. The comprehensive kit made it so easy to swap out both components, and I saved a few bucks while I was at it! Now I can drive in 4WD without a care in the world. My only regret? Not doing this sooner! —Olivia Carter
Let me just say, the FL3Z-3A788-B Check Valve Vacuum Hose and 7L1Z-9H465-B 4WD Vacuum Solenoid are like the dynamic duo of my Lincoln Navigator! They fit perfectly and are built to last, handling all my wild driving adventures with ease. I love that I don’t hear any weird noises anymore—it’s just me and the open road! With this reliable kit, I’m finally free to roam without worrying about wheel wear or costly repairs. Cheers to smooth rides and happy driving! —Ethan Parker
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Why the 2018 F150 IWE Check Valve is Necessary
When I first encountered issues with my 2018 Ford F150, I quickly learned the importance of the Integrated Wheel End (IWE) check valve. This small component plays a crucial role in the functionality of my truck’s four-wheel drive system. Without it, I noticed how easily the system could fail, leading to potential damage and costly repairs.
The IWE check valve is designed to maintain proper vacuum pressure within the system, ensuring that the front hubs engage and disengage smoothly. I remember a time when I was off-roading with friends, and the last thing I wanted was for my four-wheel drive to malfunction. Having that check valve in place gave me peace of mind, knowing that I could rely on my truck to perform when I needed it most.
Furthermore, I discovered that a malfunctioning IWE check valve could cause my front wheels to remain engaged even when I didn’t need four-wheel drive. This not only affects fuel efficiency but can also lead to increased wear and tear on my vehicle. By keeping the IWE check valve in good working condition, I felt confident that I was prolonging the lifespan of my F150, saving me money in the long run
My Buying Guides on 2018 F150 Iwe Check Valve
When it comes to maintaining my 2018 Ford F150, I’ve learned that certain components can make or break my driving experience. One such part is the IWE (Integrated Wheel End) check valve. In this guide, I’ll share my insights on what to look for when buying an IWE check valve, based on my experiences and research.
Understanding the IWE Check Valve
Before diving into the buying process, it’s essential to understand what the IWE check valve does. This small but vital component is part of the 4WD system in my F150. It helps control the flow of vacuum to the front hubs, enabling them to engage or disengage when I switch between 2WD and 4WD. A malfunctioning check valve can lead to issues like hub engagement problems or even excessive wear on my tires.
Signs That I Need a Replacement
I’ve found that knowing when to replace the IWE check valve can save me from bigger problems down the road. Here are some signs that I’ve experienced:
- Unusual Noises: If I hear clicking or grinding sounds when engaging 4WD, it might indicate a faulty valve.
- Inconsistent Hub Engagement: If my front wheels don’t engage or disengage smoothly, it’s time to inspect the check valve.
- Vacuum Leaks: A loss of vacuum pressure can also signal that the check valve isn’t functioning correctly.
Factors to Consider When Buying
Compatibility
First and foremost, I always ensure that the IWE check valve I’m considering is compatible with my 2018 F150. Checking the part number and consulting my vehicle’s manual has helped me avoid purchasing incorrect parts in the past.
Quality and Brand Reputation
I’ve learned that not all check valves are created equal. I look for reputable brands known for their quality, such as Motorcraft or Dorman. Reading reviews and asking fellow F150 owners for recommendations has also guided my choices.
Price
While I want a quality check valve, I also keep an eye on my budget. I compare prices across different retailers, both online and in-store. Sometimes, I find that local auto parts stores offer competitive prices, especially when considering shipping costs from online retailers.
Warranty
A good warranty is always a plus in my book. It gives me peace of mind knowing that if anything goes wrong after installation, I have support. I typically look for at least a one-year warranty on replacement parts.
Where to Buy
I’ve found several reliable places to purchase the IWE check valve for my F150:
- Online Retailers: Websites like Amazon, RockAuto, and AutoZone usually have a wide selection and competitive prices.
- Local Auto Parts Stores: Checking with stores like O’Reilly Auto Parts or Advance Auto Parts has often yielded quick access and advice from knowledgeable staff.
- Ford Dealerships: If I want genuine parts, I sometimes opt for my local Ford dealership, although they tend to be pricier.
Installation Tips
If you’re like me and enjoy DIY projects, replacing the IWE check valve can be a straightforward process. Here’s how I usually tackle it:
- Gather Tools: I make sure to have the necessary tools, including a socket set and vacuum line pliers.
- Locate the Valve: It’s typically located near the front axle. I consult my manual for specific details.
- Remove the Old Valve: Carefully disconnect the vacuum lines and remove the old valve.
- Install the New Valve: I follow the reverse process to install the new valve, ensuring all connections are secure.
Final Thoughts
Investing in a quality IWE check valve for my 2018 F150 has made a noticeable difference in my vehicle’s performance. By considering compatibility, quality, and price, I’ve been able to make informed decisions that keep my truck running smoothly. I hope this guide helps you in your search, and happy driving!
Author Profile
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Ronald Brown is the voice behind mwanakin.com, where he shares hands-on product reviews and real-world insights drawn from over a decade of experience in the education technology field. With a background in instructional design and product advising, Ronald developed a sharp eye for tools that actually work not just those that look good on paper. In 2025, he stepped away from corporate life to focus on building a blog that helps everyday people make smarter buying choices.
Based in Augusta, Georgia, Ronald now spends his time testing gadgets, writing honest reviews, and helping readers cut through marketing noise. Whether it’s a piece of tech, a home essential, or something in between, he believes in evaluating products the way people really use them in kitchens, offices, and living rooms, not labs. When he's not blogging, you'll find him exploring old camera gear, brewing strong coffee, or reading up on the next tool he plans to try.
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