Genuine Husqvarna Product, OEM Part Number: 589818808, Replaces: 501408101, 501408102, 581950505. Fits Husqvarna: 7022, HD725E, HD800BBC, HD800HW, HU700AWD, HU700H, HU700L. Fits Husqvarna: HU725AWD, HU725AWD/BBC, HU725AWDH, HU725AWDHQ, HU725BBC, HU775AWD, HU800AWD, HU800AWDH, HU800H, LC356AWD, LC356V, LC356VB.