Spark Plug - NGK V-Power R5724-8 Tapered Seat, 14mm Thread, .708 in. Reach, Projected Tip, Non-resistor, NGK heat range 8 3 steps colder for high boost applications Price is for EACH plug PWH-NGK-7317$2.98 www.realspeedauto.com Ph.631-563-7325 All parts listed are for the Ford Mustang unless otherwise noted. Copyright 2018 Realspeed Automotive Inc. All rights reserved.