OEM set of 2 Used on 3.9 4.0 5.2 5.9  gas engines. 92-96 dakota. 94-96 and 02 1500 94-96 2500 3500. 94-96 Grand cherokee. 92-93 D/W series and Ramcharger. 92-06 Viper 8.0 8.3