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Rear Bumper Shock and Reinforcement Replacement
 
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Pelican Technical Article:

Rear Bumper Shock and Reinforcement Replacement

Steve Vernon

Time:

1 hour1 hr

Tab:

$900 to $2,000

Talent:

***

Tools:

10mm Allen, 8mm wrench, 13mm socket

Applicable Models:

Porsche 993 Carrera (1995-98)
Porsche 993 Carrera 4 (1995-98)
Porsche 993 Carrera 4S (1996-98)
Porsche 993 Carrera S (1998)
Porsche 993 Targa (1996-98)
Porsche 993 Turbo (1996-97)

Parts Required:

Bumper Reinforcement

Hot Tip:

Do NOT strip the bolts

Performance Gain:

Safe again from mild rear impact

Complementary Modification:

Check your taillight bulbs

When you look at the rear of your 993 you are not really seeing the bumper but the bumper cover. Modern cars hide the real bumper and shocks behind a plastic cover for several reasons: aesthetics, design concerns and for drag co-efficiency. Depending on the year your car was made it has to meet government standards for the amount of rear impact it can absorb and cause under a certain amount of damage. Even though Porsche's are designed and manufactured in Germany they all meet the USA standard for rear impact due to the importance of the American market. The shocks are designed to absorb small impacts and not to have to be replaced but if you are replacing the bumper I recommend you replace the shocks.

If you are involved in a minor rear end impact and want to change out your own bumper or shocks this article will show you how.

Over the years your car may have been serviced by multiple people including previous owners and this can lead to parts replaced with different size fasteners and hardware. The sizes of the nuts and bolts we give may be different from what you have so be prepared with different size sockets and wrenches. If something is different on your vehicle, please let us know and share your info to help other users. If you have any questions or comments or even a different procedure you would like to share please leave it below and please leave your vehicle information.

To replace the bumper reinforcement you will need to first remove the taillights, rear reflector and bumper cover.
Figure 1

To replace the bumper reinforcement you will need to first remove the taillights, rear reflector and bumper cover. Please see our article on bumper cover removal for additional assistance.

With the bumper cover off you can see the bumper reinforcement (blue arrow) along with the upper heat shield (yellow arrow) and the lower heat shield (red arrow).
Figure 2

With the bumper cover off you can see the bumper reinforcement (blue arrow) along with the upper heat shield (yellow arrow) and the lower heat shield (red arrow).

Begin by removing the upper heat shield.
Figure 3

Begin by removing the upper heat shield. It is held in place by a series of 8mm nuts and washers (red arrows). Use an 8mm wrench and remove these.

With the nuts removed, remove the upper heat shield and store it some place safe.
Figure 4

With the nuts removed, remove the upper heat shield and store it some place safe. It is very easy to bend so do not put anything heavy on it.

The lower heat shield is attached to the top of the bumper reinforcement.
Figure 5

The lower heat shield is attached to the top of the bumper reinforcement. Use an 8mm wrench and remove the bolts holding it to the bumper.

You will need to slightly push back the upper heat shield (red arrow) and then use a 10mm Allen and remove the two large bolts that hold the reinforcement to the shocks.
Figure 6

You will need to slightly push back the upper heat shield (red arrow) and then use a 10mm Allen and remove the two large bolts that hold the reinforcement to the shocks.

Unfortunately for us our project car had a partially stripped nut on the right side and this meant using time and several methods to try and remove it as these bolts are on with a fair amount of torque and the bottom of the bolts usually gets corroded from the proximity to the road, weather and heat from the exhaust.
Figure 7

Unfortunately for us our project car had a partially stripped nut on the right side and this meant using time and several methods to try and remove it as these bolts are on with a fair amount of torque and the bottom of the bolts usually gets corroded from the proximity to the road, weather and heat from the exhaust.

Once the bolt is free you can remove the reinforcement and lower heat shield (red arrow).
Figure 8

Once the bolt is free you can remove the reinforcement and lower heat shield (red arrow).

Give this area a good cleaning before re-installing everything.
Figure 9

Give this area a good cleaning before re-installing everything. If you are replacing the shocks there is one on each side that the bumper reinforcement was attached to (red arrows).

Each shock is held into the rear frame by two 13mm bolts (red arrows).
Figure 10

Each shock is held into the rear frame by two 13mm bolts (red arrows). These bolts are considered single use only and should be replaced along with the shocks.

Remove the tow 13mm bolts and you can simply pull the shock out of the rear frame.
Figure 11

Remove the tow 13mm bolts and you can simply pull the shock out of the rear frame. Installation is the reverse of removal but make sure to give everything a good cleaning first.

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Page last updated: Sun 10/15/2017 03:15:24 AM