Identification 722.6, K1 - upto 2001 (friction material both sides)
6 BW friction discs - friction material on both sides - 30 int.teeth - thickness 2,1 mm (.083") - outer diameter 6.815" - inner diameter 5.765" upto serial no. 3 947 439 (probably from 1996 until end 2000) discs are the same in B1 and K1 discs per transmission: 5-10 pcs. in B1 (2-4pcs.) and K1 (3-6 pcs.)