Is your Ford F-150, Expedition, or Navigator making weird rattling noises from the front end, or having trouble engaging 4WD? This combo kit might be the fix. It includes two key parts: the 4X4 vacuum solenoid (part number 7L1Z-9H465-B) and the auto-locking hub vacuum line check valve (FL3Z-3A788-B). Together, they help restore proper vacuum pressure to your 4WD system, which can solve grinding, rattling, and failure to shift into 4WD. This kit is designed for 2015–2020 Ford F-150 trucks, 2018+ Expeditions, and 2018+ Lincoln Navigators. The check valve replaces several part numbers like 926-390, FL3Z-3A788-A, and others, so check your old part to confirm. The solenoid valve is made from metal and high-grade plastics, while the check valve uses tough plastics and rubber – both are built to handle heat and rough conditions. They’re direct OEM replacements, so they match the original size and specs exactly, preventing air leaks and keeping vacuum balance right. Installing both at the same time is a smart move, since they often wear out together. It’s a one-stop solution that saves you time and avoids mismatched parts. The kit comes ready to install, with everything you need for a complete repair. If you’re comfortable working under the hood, you can tackle this with basic tools. Fixing these parts early can prevent more expensive damage down the road, like wheel bearing or transfer case issues. We stand behind these parts with solid after-sales support – if you have questions, just reach out. Get your 4WD working smoothly and quietly again with this reliable vacuum solenoid and check valve combo. Perfect for Ford truck owners who want to keep their ride in top shape without the dealership bill.
Free 30-day returns 
Free 30-day returns
