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Rear Bumper Replacement
 
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Pelican Technical Article:

Rear Bumper Replacement

Nick Czerula

Time:

1 hour1 hr

Tab:

$200

Talent:

****

Tools:

Phillips screwdriver, 8mm socket, 10mm socket, trim panel tool

Applicable Models:

BMW Z4 Convertible (2003-08)
BMW Z4 Coupe (2006-08)

Parts Required:

Bumper mounting brackets

Hot Tip:

Have a friend nearby to help lift bumper on and off. Store bumper in safe place once removed

Performance Gain:

Better looks

Complementary Modification:

Install aftermarket bumper cover

BMW Z4 models use a plastic bumper cover over a rigid strut-supported bumper. This cover is painted to match your vehicle. It is frequently scratched and damaged. The bumper cover can be replaced quite easily by following the instructions in this tech article. You can replace a bumper cover with a factory part, or an aftermarket one if you want to upgrade the look of your Z4. Remember to plan to have it painted before you install it, so leave yourself extra time.

The rear bumper is quick and easy to remove. Release a few fasteners and two clips and you can slide it off. The mounting brackets that bolt to the body can break from impact or improper installation. In this article, I will go over removing the rear bumper as well as replacing the mounting brackets. Ask a friend to help slide the bumper on and off easier.

Remember your car may have been serviced before and parts replaced with different size fasteners used in the replacement. 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.

Protect your eyes, hands and body from fluids, dust and debris while working on your vehicle. If working with the electrical system, disconnect the battery before beginning. Always catch fluids in appropriate containers and properly dispose of any fluid waste. Recycle parts, packaging and fluids when possible. Never work on your vehicle if you feel the task is beyond your ability.

Our vehicle may vary slightly from yours as models do change and evolve as they grow older. If something seems different, let us know and share your info to help other users. Questions or want to add to the article? Leave a comment below. When leaving a comment, please include your vehicle information.

Questions or want to add to the article? Leave a comment below.

BMW Z4 models use a plastic bumper cover over a rigid strut-supported bumper (red arrow).
Figure 1

BMW Z4 models use a plastic bumper cover over a rigid strut-supported bumper (red arrow). Start by removing both rear wheels.

Working under the center of the rear bumper, remove the four 8mm fasteners (red arrows).
Figure 2

Working under the center of the rear bumper, remove the four 8mm fasteners (red arrows).

Working under the corner of the rear bumper, remove the 8mm fastener (red arrow).
Figure 3

Working under the corner of the rear bumper, remove the 8mm fastener (red arrow). Left side shown, repeat step for right side.

Working in rear of wheel well above the tire, remove the plastic rivets from wheel well liner (red arrows).
Figure 4

Working in rear of wheel well above the tire, remove the plastic rivets from wheel well liner (red arrows). Using a trim panel tool, lever out the center pin then remove the rivet (inset). Left side shown, repeat step for right side.

Peel the wheel well liner back just enough to grab the corner of the bumper cover.
Figure 5

Peel the wheel well liner back just enough to grab the corner of the bumper cover. Then pull the bumper cover straight out body to remove. Left side shown, repeat step for right side.

Once the corners are detached, continue to peel the bumper off the body, unclipping it at the center (red arrows).
Figure 6

Once the corners are detached, continue to peel the bumper off the body, unclipping it at the center (red arrows). The center clips should pull out like the corners did.

Pull the bumper cover away far enough to access the license plate lights.
Figure 7

Pull the bumper cover away far enough to access the license plate lights. Disconnect the electrical connectors. Squeeze the release tab and pull the connector straight out.

Pull the bumper cover away far enough to access the side marker lights.
Figure 8

Pull the bumper cover away far enough to access the side marker lights. Disconnect the electrical connectors. Squeeze the release tab and pull the connector straight out. Left side shown, repeat step for right side. Remove the bumper cover from vehicle, store on blanket or soft surface.

Once the bumper cover is removed, you can replace the bumper support.
Figure 9

Once the bumper cover is removed, you can replace the bumper support. Remove the four 13mm fasteners (green arrows). Then remove the support from the body. Left side fasteners shown, repeat step for right side.

To remove the bumper grille, detach the tabs (red arrow) by pushing away from center of grille, work your way down the grille as you slide the tabs out of the grille.
Figure 10

To remove the bumper grille, detach the tabs (red arrow) by pushing away from center of grille, work your way down the grille as you slide the tabs out of the grille.

If the corner mounts are damaged, replace with new.
Figure 11

If the corner mounts are damaged, replace with new. To replace, remove the Phillips head screw (red arrow) then slide off to remove (blue arrow).

When installing bumper, slide bumper onto center mount and snap tab holes (red arrows) into place.
Figure 12

When installing bumper, slide bumper onto center mount and snap tab holes (red arrows) into place.

Then align bumper cover holes (red arrows) with the corner mounts (blue arrows).
Figure 13

Then align bumper cover holes (red arrows) with the corner mounts (blue arrows). Once bumper corners are installed correctly, install bumper fasteners and check alignment with body. Install fasteners and tighten.

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Comments and Suggestions:
Willo1 Comments: Hi
Can you please advise if you have to take off rear wheels to remove bumper, many thanks
Regards
Steve Williams
November 11, 2016
  Followup from the Pelican Staff: You don't have to. It does make accessing the wheel well liner fasteners easier. - Nick at Pelican Parts  

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Page last updated: Sat 12/3/2016 03:07:39 AM