Description: Eng/code t. 3.1L. Allante. 4.5L. 3.4L. Eng/code w(a1129c). Enhances the performance and efficiency of the engine to extend its life Excellent filter capacity, efficiency, and flow management for superior performance Supplies the cleanest possible air with the least airflow restriction to the engine for enhanced performance Equipped with tight seals to keep unfiltered air from entering the combustion chamber