Is this easy to replace or do I have to have mechanic do it? Does it require any special tools? The ABS light is not on. I appreciate all your help guys!!

Igor

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1984 MB 300D Turbo Diesel W123 Sedan 132K
1987 MB 300D Turbo W124 Sedan 295K
1983 Porsche 944 104K
1989 Audi 80 Quattro 180K
2002 Audi A6 3.0 Quattro Avant 49K (Wife's car with warranty )

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