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This Elring multilayer steel (MLS) cylinder head gasket (part 054971) is engineered for Porsche 911 models with the 3
0L6 BMW 440i xDrive Gran Coupe 2017–2020 3
and Audi A3
They should be replaced any time they have been removed
Reliable Performance: Ensures consistent refrigerant metering for steady cabin cooling
Engine Crankcase Breather Hose – Oil Reservoir to Air Filter Housing Upgraded Spring This Elring multilayer steel (MLS)Engine Crankcase Breather hoses are part of a vehicles Positive Crankcase Ventilation (PCV) system. The job of the PCV system is to allow pressure to escape from the crankcase in a controlled manner. It is necessary to vent the crankcase of positive pressure caused by engine blow by (gas from the combustion event that leaks past the pistons.) This blow by gas is routed back into the intake air stream thereby reducing the emission of unburned