Specifications

 The secondary air pump working principle is: when the engine work, through the crankshaft belt driven air pump running, pumping and the large amount of low pressure air flow through a hose into the diverter valve. Under normal circumstances, the valve opens the valve, air flows through the shunt valve, one-wayvalve into the air injection manifold. Its role is: air injection manifold air flow will besprayed into the engine exhaust hole or exhaust manifold, exhaust gas in thereaction with HC, Co, to make it further into CO2 and water vapor, so as to reduce the exhaust pollution.

OEM.NO. 7H0 959 253                 7H0 959 253 A    722738190  (PIERBURG)

FOR AUDI VW

Each 12 pieces in a carton each piece with a bubble bag and put in a inner box Normally the inner box white without anything we can made the inner box for you if you want use the logo yourself .

We supply various auto parts to meet market demands, such as suspension parts
filters,brakes,pump, cooling parts,air condition systems,alternator &starter 
systems,ignition systems and body parts.