O-RING, CYLINDER BLOCK FRONT WATER TUBE, ORIGINAL W704593-S100 DESIGNED TO BE USED ON THE HEATER TUBE NIPPLE THAT MOUNT TO THE FRONT OF BLOCK, 2 REQD PER TUBE
These O-rings are designed to be used on the heater tube nipple that is located behind the water pump on 1998-2004 Mustangs. Each time the heater tube is removed from the nipple you should replace these O-rings for proper sealing. 2 required per tube. See M-8555-121 for complete tube with O-rings.
Ford Mustang Years:
1998 (98), 1999 (99), 2000 (00), 2001 (01), 2002 (02), 2003 (03), 2004 (04)