Mitsubishi MR301971 Relay. This relay is the genuine Mitsubishi OEM part, not the cheap aftermarket stuff. **This sale is for the shorter base relay, not the extended base relay. The relay has been thoroughly tested here at our facility and is in good working condition. Cosmetically the relay is also in great shape. Please contact us with any questions. Please make sure your relay has this part number prior to purchase, thank you! We also offer a 6 month warranty with this part.