Thread: Trying to fit an aluminium W126 / 107 trailing arm to a W123 - a question of compatib
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Old 06-07-2012, 08:51 AM
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Stretch Stretch is offline
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Join Date: Sep 2009
Location: Somewhere in the Netherlands
Posts: 14,461
Caliper differences
I'm quite lucky having both the W123 ATE and W126 ATE brake calipers to compare. If one set had been of another make it might not be so clear.

I can confirm that

1) the brake pads are the same
2) the discs are the same
3) the brake pistons in the calipers are the same
4) the caliper mounting bolt diameters are the same but the bolts are of a different length
5) the distance between the centres of the mounting bolts are the same
6) only the thickness of the mounting side on the W123 caliper is thicker - the casting is slightly different in this area - that's it.

Here are the pictures





Attached Thumbnails
Trying to fit an aluminium W126 / 107 trailing arm to a W123 - a question of compatib-w126_w123-caliper-comparision1.jpg   Trying to fit an aluminium W126 / 107 trailing arm to a W123 - a question of compatib-w126_w123-caliper-comparison2.jpg   Trying to fit an aluminium W126 / 107 trailing arm to a W123 - a question of compatib-w126_w123-caliper-comparison3.jpg  
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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

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