Cheap And Discounts CHENHO BRAND NEW Auto Knock Sensor For BENZ 0261231188 0041539028 5S11713 SU13166 KS322 Wholesale. Buy Directly From Merchant Ruian Chenho Auto Electronic Co., Ltd.. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.