Mr. Gasket Performance Exhaust Header Gasket 4805GSponsoredMr. Gasket Performance Exhaust Header Gasket 4805G$41.49Part # 4805GSKU # 1211457Check if this fits your 2009 Chevrolet ImpalaFree In-Store Pick UpSELECT STOREHome DeliveryStandard DeliveryEstimated Delivery June 06Add TO CARTNotes: Round ports. 1.75". Exhaust header gasket. Multi-layer stainless steel.PRICE: 41.49