P.C.V. VALVES

Do not install PCV Valves by shape alone as air flow varies from one valve to another. Identical outside does not mean identical inside. You may damage an engine by using a wrong PCV Valve. Information on PCV Valve application is provided by L DR according to data supplied by our manufacturers. L D R assumes no liability for misinformation or misapplication of PC V Valves. Check Vehicle Owner's Guide or Vehicle Manufacturer's Repair Manual for correct PCV Valve number.

ILLUSTRATIONS ARE NOT ACTUAL SIZE.

DIFFERENT COLORS & DIFFERENT SHADE GRADATIONS ARE NOT SHOWN. ILLUSTRATIONS INDICATE SHAPE ONLY.

PCV VALVES & BREATHERS

The PCV (Positive Crankcase Ventilation) valve helps control pollution from cars by returning crankcase fumes to the engine's intake manifold to be re-buried. Breather elements function similarly to air filters, filtering outside air into the PCV system. A clogged PCV valve or breather element causes heavy engine sludging, poor engine performance and stalling.

These are warning signs of a PCV system malfunction:

For best engine performance, PCV valves and breather elements should be inspected regularly. Manufacturers recommend replacing the PCV valve every 15,000 miles and the breather element as needed. You may check each vehicle's owner manual for more information.


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