Replace your worn out upper ball joints on the rear suspension on many Ford, Lincoln, and Mercury AWD vehicles with these replacement ball joints from SPC. Ford makes you buy the whole knuckle to replace this joint, but you can save time and money by simply replacing the ball joint instead. Need camber adjustment as well? Check out SPC p/n 67690 for a camber adjustment ball joint that offers +-1.25deg of change. California Residents WARNING