Standard Ignition PCV Valve P/N:V609
Standard Ignition V734 PCV valve for the 2008-2012 Audi S5 V8 4.2L and other vehicles meters air flow from the crankcase to the intake manifold. This Standard Ignition PCV valve is a direct-fit replacement for damaged OE units.
A worn or clogged PCV valve can show up as a rough idle, oil leaks or higher oil use. Those signs can have other causes, so before replacing the valve, look it and its hose over with the engine off and cool for cracks, oil sludge or a pintle that looks stuck.
Among the vehicles it fits are the 2008-2012 Audi S5 V8 4.2L, the 2007-2011 Audi A6 Quattro V8 4.2L and the 2007-2010 Audi A8 Quattro V8 4.2L.
Fit and size
Build and materials
One PCV valve with an O-ring; each vehicle takes one. Mounting hardware and a hose connector are not included, and the old hardware may not be reusable, so plan on new pieces.
Interchange: 2-9805
PCV819 · 079103464F
This part cross-references / interchanges with the following part numbers:
Will the V734 work as an Audi S5 PCV valve replacement on a 2008-2012 model with the V8 4.2L?
Yes. Standard Ignition V734 fits the 2008-2012 Audi S5 V8 4.2L and other vehicles. If your car is not named on this page, look for it in the "Vehicles it fits" section.
Does the V734 PCV valve come with an O-ring and a hose connector?
Standard Ignition V734 includes an O-ring. The hose connector and mounting hardware are not included, so you will need to get those separately.
Is the V734 a straight PCV valve with a male end?
Yes. Standard Ignition V734 has a straight nipple orientation and a male end.
Can this PCV valve handle oil and engine heat?
Yes. Its high grade industrial construction resists oil and holds up under extreme engine operating temperatures.
Does Standard Ignition V734 replace the PCV819 valve?
Yes. Standard Ignition V734 lists PCV819 among the numbers it replaces, along with 2-9805 and 079103464F.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.