Thewidowson

I have a 1993 Audi 90 2.8 FWD.The car has a bad vibration at highway speed.Its binding on the front left side.Causing the vibration.Also the brake pedal pulses when I hit the pedal.I bought a new set of crossed drilled and slotted rotors with pads for all four corners.When I got to the problem corner.I found a caliper guide pin had seized and rusted into the caliper mounting bracket.I have looked at all the typical auto parts stores.They dont carry the part in stock. Im getting ready to take this car on its first roadtrip. So I need to find parts locally.I dont have time to wait on them to ship.I ran to the junkyard and looked at a 98 a4 2.8 but the mounting brackets were different.Did these style brakes come on any model of Audi?I hope to find one locally.

Thewidowson

Also the Audi I checked was a 30 valve.I used to have a 99 1.8t quattro A4. I remember it had single piston calipers up front.Would the 12v A4s use the old B4 style brakes?

Rusty Spokes

A quick look at the parts catalog and there are two possibles for caliper carrier brackets one for solid rotors and the other for vented rotors.
You probably have vented rotors and the caliper bracket part number should be 443615125F..confirm by examining your old part..there is a part number stamped on the part.

That same caliper carrier was used on Audi 5000s, 200s, 100s and Cabriolets..all from the early 1990s.

Thewidowson

Thank you rusty.I was able to find a cabriolet that matched.