How to fit new bumper guide rails and refit the front bumper - Astra Mk4.
1. Drill out the rivets on the guide rails, there are two on each side. They are fixed to the lip on the bottom front of the wings.
2. Unclip the rails from the lip on the wing, just give them a good tug.
3. Clip the new rails onto the wing lip. There are two clips at the top of the guides that go into slots.
4. Pop rivet the guides to the wing or you can use nyloc nuts and flat head countersunk cross head screws with washers if you drilled the rivets out poorly.
5. Ensure the Bumper Foam inserts under the headlights are fitted, they slot into the front crossmember
6. Offer up bumper to front of car
7. Slide the inner centre edge of the bumper into the return on the crossmember and fix using 9130754, Rivet, Expanding, Front End Panel To Centre Support, Black. There are two required.
8. Then working under the car fix the lower part of the bumper to the front axle crossmember using Part Numbers 90508323, Grommet, Front End Panel To Front Axle Crossmember and Part Number 90508809, Rivet, Expanding, Front End Panel To Centre Support.
9. Put the centre one in first, this will help you line up the left and right fixings.
10. Once this is done, snap the lip of the bumper into the guide by pushing firmly into it with the palm of your hand. There will be a sharp snap as it fixes into the guide rail.
11. Fit the torx screws in the arch, there is one either side.
12. Fasten the bumper to arch liner screw either side.
13. If you are having a few issues, undo the two top fasteners on the crossmember and push the bumper until its lined up equally both sides then refasten.
You have now fitted your bumper. To remove the bumper just do steps 6-13 in reverse.
It is best to buy a couple of extra plastic rivets of each type as they can be awkward to fit and bend easily.
Main Dealer costs:
90559500, Rail, Guide, Front End Panel To Wing, RH £4.18 + vat x1
90559499, Rail, Guide, Front End Panel To Wing, LH £4.18 + vat x1
9130754, Rivet, Expanding, Front End Panel To Centre Support, Black £0.22 + vat x 2
90508323, Grommet, Front End Panel To Front Axle Crossmember £0.31 + vat x 3
90508809, Rivet, Expanding, Front End Panel To Centre Support £0.25 + vat x 3
Standard Pop Rivets as required x 4
Cheaper than EBay all in by £3.50.