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Features: Die-cast construction. Skull protrudes outward about .750". '06 Dyna Glide and all '07-'18 Big Twin (except '16-'18 Dressers, '15 FLHTCUL/FLHTKL, '18 FLSB) applications will require the use of gasket PART #s 0934-0289 or 0934-0788..