This is a genuine Mazda (OE) RX-7 FD3S 13B-REW rotor housing set, with part numbers N3G1-10-B10 and N3G1-10-B50. The set is intended to be used as a replacement part for your Mazda RX-7. It is compatible with various models and series, such as the RX-7. The set includes a front and rear rotor housing. This factory OEM part is perfect for those who want to maintain the authenticity of their Mazda RX-7. Don't miss the chance to own this high-quality rotor housing set.