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Premium Axle Service Part for Peak Automotive Performance.

Take control of your 4-wheel drive engagement with a high-performance Spicer 4WD vacuum actuator. This vacuum-operated diaphragm:  

  • Ensures that your 4WD is fully engaged
  • Helps you avoid a commonly misdiagnosed repair 

The 4WD Vacuum Activator. OE Durability. Made in the USA.

If you are experiencing less responsiveness in your 4 wheel drive axle, there is a good chance that your rubber diaphragm is cracking or breaking, impeding the operation of your four wheel drive truck or vehicle. By replacing the 4WD vacuum actuator in your pickup truck, Jeep or SUV, you can help remedy this. Spicer 4WD vacuum actuator kits come with everything you need to make a complete repair, including all the gaskets and seals that prevent leaks and keep the elements out.

Enjoy easy installation, as well as solid performance even in harsh weather conditions.

Spicer 4WD vacuum actuators are part of the complete line of Spicer high-performance parts. Engineered to deliver on or off the road, these are the parts that serious enthusiasts demand. Browse all our performance axle and driveshaft components.

Find a Spicer 4WD Vacuum Actuator Dealer Near You.

Look for the Spicer parts dealer nearest you, and discover the difference that genuine Spicer axle products can deliver for you.