Engine Valve Spring Seat 2009 Ford Mustang Edelbrock pulley part #15820 is

Edelbrock pulley part #15820 is for use with any of our Professional Tuner systems

Comes with mounting bolts

75" pipes Cat-Back(tm) system by Borla(r) features a True Dual design which is unique in the industry

sump with a 9 quart system capacity

Engine Valve Spring Seat 2009 Ford Mustang Edelbrock pulley part #15820 isEdelbrock part #5771 Valve Spring Seat Cups for Edelbrock 390 428 Ford FE and 383 440 Chrysler Heads using valve springs #5792. These Spring cups provide a hardened barrier between the springs and the aluminum heads, positively locating the base of the spring to prevent unwanted spring movement. Sold in sets of 16.