Add to Cart Quick view 100 pcs/pack Insulator 42-1318 30-3301 42-1318 MSRP: Now: $69.43 Was: InsulatorReplace OEM(s): DelcoFamily: 20SI, 29SI, 33SI, 34SI, 35SI, 36SI Series IR/EF AlternatorssFor: IR/EF AlternatorssCondition: NewSpecification: 5.3mm ID MSRP: Now: $69.43 Was: Add to Cart Quick view