Porsche 911 (99-08) Engine Air Filter (x2) HENGST Engine Air Filter (set 2) NOTE: not for Turbo. Fits Carrera, C4, and C4S. Porsche part# 996 110 131 52, check fit below. Recently made by HENGST, not been lying around. Please see FITMENT CHART below, under PRODUCT DESCRIPTION. Email us your VIN for any questions.