Upgrade the primary timing chains of your 5.0L Coyote engine by swapping them out for the GT350 primary timing chains! These chains offer 10% greater strength than 5.0L Coyote timing chains. Fits 2015-2017 Mustang GT 5.0L "Coyote" engines Replacement for 2015-2017 GT350 and GT350R Geared towards racing enthusiasts Includes: Set of 2) GT350 primary timing chains