Choose Options Quick view 20 pcs/pack Insulator 31-1300 173-12000 31-1300 MSRP: Now: $10.02 Was: InsulatorReplace OEM(s): DelcoFor: Delco 10DN Series ER/EF; 25SI, 26SI Series IR/EF AlternatorssUsed On: Delco 10DN & 25SI AlternatorsCondition: NewLocation Used: Rectifier Stud, Diode-Stator StudOA... MSRP: Now: $10.02 Was: Choose Options Quick view