This is an OEM two v-groove pulley harmonic balancer removed from a 1978 Datsun /Nissan 280z with the inline six cylinder L28 engine. The balancer appears to be in relatively good used condition. The key slot is clean and damage free. The rubber isolator which creates the balancing does show some aging but appears to be nominal for the age. This was removed from a ru ning L28 engine and performed nominally during run test. This sale includes the securing bolt and washer but the washer does show some surface pitting on one side. This did not hamper its ability to secure the balancer on the donor engine. This item is being sold as-is with no refunds allowed and no returns accepted. Purchaser is responsible to verify this item is correct for their application prior to making purchase.