Power Assisted Steering Box Seal Kit 4 Bolt Type This listing is for a full kit of high quality Corteco seals to repair Land Rovers 4 bolt type PAS box. These are fitted to Land Rover Defenders, Discovery 1 and Range Rover Classics. This corresponds to the following part numbers: STC876, STC890, STC2847 This will fit the following vehicles: Land Rover Ninety/One Ten - 4 Bolt Steering Box Land Rover Defender - 4 Bolt Steering Box Land Rover Discovery 1 - 4 Bolt Steering Box Range Rover Classic - 4 Bolt Steering Box Please see our other items for thousands more Land Rover parts and accessories.