Viscous fan Coupling This listing is for a quality replacement viscous fan coupling, suitable for the 17" 11 blade fans fitted to 3.5 and 3.9 V8 Discovery 1 and Range Rover Classics. M24 x1.5mm thread fitting, 30mm nut. This corresponds to the following part numbers: ETC1260 This will fit the following vehicles: Land Rover Discovery 1 - V8 EFI to chassis no. LA081990 Range Rover Classic - V8 Twin carb - engine code 27D 3.5 V8 PI H/C engine code 29D 3.5 V8 PI AUTO, 17", 11 blade Range Rover Classic - V8 EFI 17" 11 blade fan Range Rover Classic - 2.4L VM Turbo Diesel 17" 11 blade fan. Please contact us with your vehicle details if you are unsure. Please see our other items for thousands more Land Rover parts and accessories.