F016A57698 supersedes older part numbers: F016102295

Genuine Allett roller-drive pinion F016A57698 — precision replacement gear for cylinder and rear-roller drive transmissions. This original Allett pinion (cross-ref F016102295) restores smooth engagement and reliable rear-roller drive on older cylinder mower gearboxes; it’s made to the same profile and tooth geometry used on the factory transmission assemblies.

What it does: the small, precision-cut pinion meshes with the roller ring gear to transfer engine/transmission torque to the rear roller or cylinder drive. It’s the correct pinion for the geared roller-drive systems found on many Allett, Atco, Qualcast and Suffolk Punch cylinder mowers — the mating pair is often a 9‑tooth drive pinion in these systems.

Example models this part fits: Allett Classic 12E, Classic 14L, Classic 17L, Kensington 12E/14E/14K/17K/20K, Liberty 35/43 and Sandringham 14E; Atco Balmoral and Windsor petrol cylinder ranges; Qualcast Classic petrol cylinder 35S/43S; Suffolk Punch petrol cylinder models (14S/17S/35S/43S). Always compare the tooth-count and shaft fit with your existing pinion before fitting.

Why buy it: if your roller is slipping, noisy, or the cylinder/roller isn’t turning evenly, replacing the worn pinion with this genuine Allett drive pinion brings the transmission back to correct mesh and quiet operation — a straightforward swap that avoids reworking shafts or mating gears. Allett parts like this pinion are designed for direct fitment into the original gear train.

Note: pinion tooth count and shaft/bore details can vary by year and transmission option, so match the part number and the physical pinion on your mower before installation.