Strength of timing belt is optimized for each vehicle.Even expansion of engine by heat is considered to stabilize tension of timing belt. With usual production technology,teeth portion is shaped by pressing from outside.With this production,fabric of teeth is pulled and tension will reduce strength.Thus,with the new production technology,fabric of teeth is aligned filled in the fabric to keep strength of the teeth fabric that can accept high torque. High density H-NBR is used for teeth rubber to strengthen teeth portion. Used on camshaft and injection pumps on automotive engines. It has the feature of oil hand heat resistant, aging-resistant, non-slip, small elongation and long lift. Main type: ZA, ZB, ZBS, RU, MR, RS, YU, MY, S8M and ect. Car model: Mitsubishi, Honda, Toyota, Citroen, Ford,Feugeot, Kia, Mazda, Renaulf, Audi, Volkswagen and ect. Here are some part numbers for our Auto timing belt: 3343893, 636566, 081644,081648, 081660, 081662, 081671 96097062, 97522929, 95639605, 96100168, 96141369, 90324698, 90354783, 96352965, 90531678, 96144076, 96183353, 96352407, 10068553, 96103128, 96183351, 96183352, 92063917, 97143724, 90353179, 90354782, 90410223, 97143724, 30819383, 30864046 MD 008961, MD 008969, MD 009651, MD 040797, MD 100632, MD 015311, MD 016313, MD 041407, MD 099708, MD 106103, MD 115977, MD 145716, MD 177149, MD 182295, MD 050119, MD 152622, MD 145813, MD 197129, MD 030599, MD 030600, MD 030610, MD 099706, MD 113563, MD 197127, MD 100814, MD 113564, MD 116786, MD 197128, MD 102048, MD 127424, MD 197121, MD 197122, MD 153723, MD 198116, MD 199072, MD 300473, MD 310484, MD 102049, MD 325854, MD 340625, MD 344749, MD 114690, MD 314456, MD 196001, MD 191982, MD 310836, MD 176386, MD 009277, MD 009666, MD 009667, MD 100619, MD 113561, MD 197130, MD 013805, MD 015310, MD 095866, MD 102248, MD 197131, MD 317878, MD 334207, MD 176387, MD 197132, MD 189521, MD 197140, MD 120487, MD 140227, MD 197137, MD 329639, MD 008960, MD 008968, MD 009352, MD 100620, MD 113562, MD 197135, MD 015701, MD 041390, MD 098491, MD 102249, MD 113790, MD 140228, MD 197136, MD 187462, MD 189522, MD 154243, MD 182293, MD 197141, MD 336149, MD 098492, MD 110709, MD 140229, MD 197138, MD 182294, MD 197144, MD 323455, MD 339052, MD 317882, MD 334206, MD 196000, MD 100679, MD 111427, MD 197145, MD 110041, MD 133116, MD 145714, MD 182201, MD 197139, MD 199418, MD 313447, MD 110029, MD 133115, MD 145713, MD 171748, MD 182291, MD 197142, MD 326059, MD 142750, MD 197123, MD 176388, MD 197133, MD 182292, MD 331076, MD 197126, MD 153724, MD 303375, MD 319023, MD 176389, MD 197134, MD 071052, MD 095266, MD 102250, MD 197150, MD 164287, MD 197151, MD 192319, MD 300470, MD 306981, MD 050130, MD 060461, MD 099707, MD 134377, MD 197153, MD 179619, MD 197148, MD 319266, MD 307487, MD 322641, MD 179620, MD 197149, MD 211195, MD 313673, MD 318814, MD 338287, MD 199079, MD 323448, MD 347533, MD 140070, MD 161427, MD 183005, MD 193874, MD 197146, MD 183006, MD 193875, MD 197147, F32Z6268A, 7700749225, 31470-2100, 31470-2110, 31470-2121, 31470-7111, 38498-2100, 41470-0900, 38498-1001, 41470-1001, 48498-1001, 13160KA000, 41470-5400, 41470-5401, 41470-5500, 41470-5501, 41470-5601, 41470-5701, F42Z-6268A.