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Professional-grade rear main seal installation tool designed for precise alignment and smooth installation
precise steering performance to original specifications
Make Model Years Engine Audi S4 2005–2008 4
Improved Performance: Helps maintain engine power under heavy load
Quiet Operation: Anti-squeal shims included
Engine Crankcase Breather Hose Bi-Xenon Professional-grade rear main seal installationEngine 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
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