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I am installing new Mahle Piston/Cylinder Set and have a choice of sets; The set on the left is Newer but still NOS, and the set on the right is older by approx 10 years guess OLD NOS, and am curious if anyone knows if there was a differnce in Mahle manufuacturing periods? I.E. hecho en Mexico Mahles?
Or better should I use the calipers and check them and if so what should I look for? wall thickness consistency or roundness or both ect? Thank You, Joe