

⚡ Upgrade your 4WD system with precision and confidence!
The Dorman 926-391 4WD Actuator Vacuum Check Valve is a high-quality, direct replacement part designed to restore proper vacuum levels in select Ford and Lincoln 4WD systems. Featuring durable metal construction and engineered to OEM specifications, it ensures reliable performance and easy installation. Backed by a limited lifetime warranty and expert craftsmanship, this valve is a must-have for maintaining your vehicle’s off-road readiness and driving confidence.





| ASIN | B09S2W4RRS |
| Best Sellers Rank | #30,512 in Automotive ( See Top 100 in Automotive ) #1 in Automotive Replacement Emission Vacuum Valves |
| Brand | Dorman |
| Brand Name | Dorman |
| Connector Type | Barb |
| Customer Reviews | 4.5 out of 5 stars 231 Reviews |
| Exterior Finish | Ready To Paint If Needed |
| Included Components | 1 Tube Assembly |
| Inlet Connection Type | Compression |
| Item Dimensions | 8.85 x 3.15 x 3.15 inches |
| Item Type Name | 4WD Actuator Vacuum Check Valve Compatible with Select Ford / Lincoln Models |
| Item dimensions L x W x H | 8.85 x 3.15 x 3.15 inches |
| Manufacturer | Dorman Products |
| Manufacturer Warranty Description | Limited Lifetime |
| Material | Metal |
| Material Type | Metal |
| Model Number | 926-391 |
| Number of Ports | 2 |
| Outlet Connection Size | 3.15 Inches |
| Outlet Connection Type | Compression |
| Size | 84.77 cubic inches |
| UPC | 037495934152 |
| Unit Count | 1 Count |
| Valve Type | vacuum check valve |
M**R
Direct replacement, works well
Easy to replace, I'm no mechanic but a 5 minute YouTube video plus 2 minutes of labor and it was finished. Direct replacement. This review is written less than a year but over 6 months since replacing and no further issues.
D**H
Good
Perfect fit and appears to be good quality.
N**K
Perfect replacement for and old vac line.
Worked perfect.
B**P
Works
Works like it should
G**7
Great part
Great replacement part and easy install, good value.
J**N
Perfect fit
Perfect fit. No more vacuum leaks. 4wd works perfectly again. 13 f150
H**W
Easy fix
Replaced this and the IWE solenoid and my issue was fixed. If the vehicle still shows the wrench and check 4x4 light, unplug the negative battery cable for 10 mins or so and ot should clear the code.
R**N
Good product
Nice product! Fixed our situation with tge front 4WD clicking in the hub of our 2015 Expedition. Should be easy to install for most people.
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