Hebei Haolu Auto Parts Co.,Ltd is a professional manufacturer and whole saler, we are in this field for more than twenty years, with the strength of oxygen sensor. Specifications : Features: 1) Good Design and outstanding performance meet or exceed the OE equipment. 2) fast reaction, high performance properties Function : 1) Save up to 15% of fuel expense. 2) Meet the strictest exhaust emissiom standards. 3) Avoid the repair expense due to damaged three-way catalytic converter.