6. Once you remount the tires and wheels, if you’ve removed them, you’re ready for a test drive. If you hear anything unusual, recheck the torque of your bolts. Take note that due to the polyurethane bushings, you may see a slight increase in noise transmitted through the suspension to the interior of the car. The factory rubber bushings isolate this noise better than the polyurethane does. So it’s a trade off of sorts, getting a firmer suspension in exchange for a slight increase in noise.
One Final Note
I also want to point out, that the Ford Service Manual states that the bolts and nuts that connect the suspension arms to the vehicle should not be reused. With that being said, I know many mechanics that insist that reusing the bolts is fine, providing the threads appear to be undamaged upon inspection. Personally I’m not about to enter that debate, and you can choose your own course of action when it comes to replacing the bolts. However, for those that wish to do this, I’mproviding the Ford part numbers below. This should prove useful when you arrive at the parts counter. Be prepared to pay in the neighborhood of $4 for each bolt, and around $3 for each nut.
I should also point out that the bolt and nut that connect the bracket to the upper control arm isn’t sold individually. It’s only available as an assembly with the stock bracket and control arm. The part number for the entire assembly is5K671.
Here is the part numbers for the other hardware (Only 1 of each item is needed unless specified otherwise):
- Upper Control Arm Flag Bolt:W710051-S439
- Upper Control Arm Nut:W520215-S440
- Upper Control Arm Front Bracket Bolt:W708795-S439
Upper Control Arm Rear Bracket Bolt:W709884-S440 (Quantity 2)
Installation instructions provided by AmericanMuscle customer Eric Hege 4.29.09