How To Install Mustang 5.0 Resto Rear Upper Control Arms (79-04)

Created by Jay Walling / 2 min read
Date Created: 6/29/2016
Last Updated: 11/7/2022

Easily install your 1979-2004 Mustang 5.0 Resto Rear Upper Control Arms with the help of Late Model Restoration's installation instructions!

Viewing this install and using the information shared is subject to the terms set forth here - View the LMR Install Instructions Disclaimer.

How To Install Mustang 5.0 Resto Rear Upper Control Arms

Adding a set of these 5.0 Resto Rear Upper Control Arms is a great way to restore your Mustang's ride quality back to what it once was while keeping your Mustang within factory spec! 5.0 Resto manufacturers these upper control arms to OEM specs and tolerances. These upper arms feature a correct rubber hydro bushing and stamped steel construction. This will help keep down noise, harshness, and vibrations from the rear end of your Mustang. These can also be installed on any 1979-2004 7.5" or 8.8" rear differential. Installation is quick and easy with the use of a few common hand tools!

Tools Needed

  • Lift or Jack Stands
  • 18mm Socket and Wrench
  • Soft Mallet or Dead Blow Hammer
  • Pry Bar

Installation Instructions

  1. Support the car via a lift, or jack and jack stands. Remove both of the rear wheels from the vehicle.

  2. Take this time to support the rear end with a jack, or a pole jack, closest to the pinion flange.

  3. Remove the lower shock hardware to allow movement with the rear end. Both sides of the hardware will be an 18mm bolt head/nut. Lower the rear differential housing down enough to remove the rear springs from the car. This step is not 100% needed, but it will help free up some room for the upper arms.
  4. How To Install Mustang 5.0 Resto Rear Upper Control Arms - How To Install Mustang 5.0 Resto Rear Upper Control ArmsHow To Install Mustang 5.0 Resto Rear Upper Control Arms - How To Install Mustang 5.0 Resto Rear Upper Control Arms

  5. Remove the control arm axle side hardware first, with a combination of 18mm socket and wrench.
  6. How To Install Mustang 5.0 Resto Rear Upper Control Arms - How To Install Mustang 5.0 Resto Rear Upper Control Arms

  7. Next, loosen the hardware on the body side of the rear upper control arm, and remove the bolt. You can jack up on your jack, or pole jack to change the pinion angle to help free the arm out of place.
  8. How To Install Mustang 5.0 Resto Rear Upper Control Arms - How To Install Mustang 5.0 Resto Rear Upper Control Arms

  9. Install the new control arm, and reinstall the hardware the same direction that you removed it. If a bolt is difficult to slide through the bushing, tap it with a dead blow hammer. Tighten down the hardware to 90 lb/ft for each side, and do these same steps for the other control arm.

  10. Double check your work, and you're all done!

Related Products

About the Video

Mustang Rear Upper Control Arms Review (79-04)

Check out our YouTube channel for even more tech tips, installation videos, how-tos, and more. The best place to go for anything Mustang related!

Published on 2016-06-24
These 5.0 Resto 1979-2004 Mustang direct replacement rear upper control arms are the perfect way to restore your Mustang rear suspension.

Factory control arms can become damaged and bushings can start to deteriorate, leaving you with a rough ride and rear end noises. These rear upper control arms feature rubber bushings that are pre-installed for a bolt on replacement.

These controls arms are made from stamped steel, just like your OE upper control arms. Pick up a set today to get your Mustang riding smoothly again!

Mustang Fitment: 1979 (79), 1980 (80), 1981 (81), 1982 (82), 1983 (83), 1984 (84), 1985 (85), 1986 (86), 1987 (87), 1988 (88), 1989 (89), 1990 (90), 1991 (91), 1992 (92), 1993 (93), 1994 (94), 1995 (95), 1996 (96), 1997 (97), 1998 (98), 1999 (99), 2000 (00), 2001 (01), 2002 (02), 2003 (03), 2004 (04)
What’s happening guys? Landan with and this video will cover my breakdown on 50resto’s factory-style, replacement upper control arms fitting your 1979 to 2004 Mustang.

5.0resto is without question the leader in Fox Body Mustang restoration parts. They’re precise expertise and dedicated knowledge to the Fox Mustang is definitely the best on the Mustang market.

5.0resto’s factory-style replacement upper control arms is the perfect solution for any of you guys that are looking to keep your car in factory spec. Each of these control arms are manufactured from high quality OEM-grade steel that is then stamped to achieve a perfect replica of the factory arm.

These arms weigh in at two and three quarters a piece which equals to a combined weight of five and half pounds. Center to center on the bolt locations measures in a nine and a quarter inches which is spot on with the factory upper control arms.

Like the originals, these 5.0resto upper control arms also feature pressed in hydro-bushings that are manufactured with similar OEM-grade materials to offer years of drivability and to keep noise, vibration, and harness to an absolute minimum.

Of course these upper control arms are designed to fit all 1979 to 2004 Mustangs equipped with a seven and a half or eight point eight inch, solid axle rear end.

If you fellas want to see more product reviews for your Fox or SN95 based Mustang, then subscribe to our YouTube channel if you haven’t already done. While you’re at it, head back over to the site and pick up a set of 5.0resto rear upper control arms for your 1979 to 2004 Mustang at
Thumbnail image of the author of this article, Jay Walling.

About the Author

Jay has written content for Late Model Restoration for over 10 years, producing over 120 articles. Jay has an extensive 25-plus-year background in automotive and is a certified Ford Technician. Read more...