Air filters for Sierra and Silverado The headers are for a six-cylinder, and the rest fit both eight and six-cylinder engines. It also comes with a volant 5.3 filter. The headers, Y-pipe, and the electronic mid-muffler are all custom-made by Added Power. The last pipe comes with a Flowmaster muffler, installed by Ben Mardah for headers. The parts cost me over 5000 SAR without the filter. Selling for a good price, whether as a whole or in parts. Contact via WhatsApp: ( Phone number appears when clicking the contact button )