Replacing Shocks On 420sel
 

I am getting ready to replace the shocks on my 90 420sel. I really at this time only need the rear replaced, but have considered all shocks. I am going to replace with Bilsteins. My question is should I replace all four or just the rear? Also, should I go with the regular shocks or heavy duty?

Bilstein or Boge, even a US made gas shock...
 

...will no doubt make a real difference if your old shocks are worn out.

Unless you are towing something heavy the regular shocks s/b fine for another decade, or so...

Actually the US made shocks that are available, for example, the Monroe LE10134 @ $85 per rear set, are (limited) lifetime shocks @ half the price.

With a good installation & a 4-wheel alignment you should be in business;)

Hi Scott,

assuming that the front of the car went over the same bumps as the rear, the front shocks have suffered the same amount as the rears:D
If they have signs of oil leaking, I would replace them.
I changed all 4 on my 87 and I used the regular Bielsteins. The car is mostly driven with one or two people in it and I prefer a cushy ride.

When I took the rear back rest out to reach the top shock mounts, I also put some carpet strips on the metal back and the floor. It dampened the road noise quite a bit.

Good luck

Reinhard