This is a manual free wheel locking hub with 29 splines, compatible with Patrol MK, MQ, and W160 models from 1980 to 1989.It is designed as an aftermarket replacement for the locking hub assembly.Reference number: BO50 MK MQ 80-89. Fits Patrol MK, MQ, W160 Station Wagon with the following engine configurations: - 2.8L 6-cylinder petrol (L28 engine, 88 kW, 2753 cc) - 3.2L 6-cylinder diesel (SD33 engine, 70 kW, 3246 cc) - 3.2L 6-cylinder turbo diesel (SD33T engine, 81 kW, 3246 cc) - 3.3L 6-cylinder turbo diesel (SD33T engine, 81 kW, 3246 cc) - 4.0L 6-cylinder petrol (P40 engine, 108 kW, 3956 cc) Installation instructions are not included.Professional installation is recommended.Due to variations in and screen settings, the item's color may differ slightly from images shown.Manual measurement may result in a tolerance of ±1–2 mm.