The Walker WKR4245 Idler Pulley is an authentic OEM replacement part specifically designed for various Walker Mower models. This essential component maintains correct belt tension, facilitating efficient power transfer and smooth operation of the mower's drive system. Manufactured to Walker's specifications, it ensures reliable performance and contributes to the longevity of the drive belts and associated components. Key dimensions include an outer diameter of 114.3 mm (4.5 inches), a bore diameter of 15.875 mm (0.625 inches), and a width of 25.4 mm (1 inch).