I'm in the process to collect parts to tear down the front of my car. I've bought 2 extension parts for the front, as I think that they need replacement. The left side I bought from an old parts stash from a private person, the right side I bought through my local dealer. I was surprised, but they still had it! FYI also W&N sell them by the way.
However I noticed that there are differences between my 2 parts. Most noticeable is the locations of the 3 large (20mm) round holes; where the front hole is easily detectable as it's close to another small hole.
In the old part that I have, the edges of the small and large hole are 34 mm apart.
In the recently purchased BMW part, the distance between the holes is just 4 mm:
. 
Does anyone know the background of the difference?
Is there one part that is 'more' correct then the other?
Am I correct that these holes are for wax injection, and serve no particular other function?
I am considering to relocate the holes in the new part, as I think the 34 mm distance is the location of the holes when my car was build.
My car has recieved a new front and new fenders in the past somewhere, so I do not want to rely on the status of the extension parts that are mounted today.
The parts also differ in slightly other aspects, as noted by some of the green tapes
- new BMW part has no folding line over the square section pointing to the middle; the old part (left) does have a very light fold:
- new bmw part has a 1*2 cm chamfer at the front corner, where the old part has a 90 degree angle (bmw part is 'missing' a 1*2 cm part?):
- Where the square section is spot welded to the long part; it forms a 1 cm wide flange with a few deep spot welds. The new BMW part has no step in the jpint'it's flat.
- new BMW part; the square section ends in a sharp point where it curves down into the engine room. the old part has a sharp point; the new BMW part is about 15 mm shorter and of slightly different contour:
And, funny enough, the new BMW part says 'Made in Belgium"...
Herewith some pics of my parts:
However I noticed that there are differences between my 2 parts. Most noticeable is the locations of the 3 large (20mm) round holes; where the front hole is easily detectable as it's close to another small hole.
In the old part that I have, the edges of the small and large hole are 34 mm apart.
In the recently purchased BMW part, the distance between the holes is just 4 mm:
. Does anyone know the background of the difference?
Is there one part that is 'more' correct then the other?
Am I correct that these holes are for wax injection, and serve no particular other function?
I am considering to relocate the holes in the new part, as I think the 34 mm distance is the location of the holes when my car was build.
My car has recieved a new front and new fenders in the past somewhere, so I do not want to rely on the status of the extension parts that are mounted today.
The parts also differ in slightly other aspects, as noted by some of the green tapes
- new BMW part has no folding line over the square section pointing to the middle; the old part (left) does have a very light fold:
- new bmw part has a 1*2 cm chamfer at the front corner, where the old part has a 90 degree angle (bmw part is 'missing' a 1*2 cm part?):
- Where the square section is spot welded to the long part; it forms a 1 cm wide flange with a few deep spot welds. The new BMW part has no step in the jpint'it's flat.
- new BMW part; the square section ends in a sharp point where it curves down into the engine room. the old part has a sharp point; the new BMW part is about 15 mm shorter and of slightly different contour:
And, funny enough, the new BMW part says 'Made in Belgium"...
Herewith some pics of my parts:
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