This belt features poly-v grooves that are designed to perfectly match up with the pulleys and tensioner for your P38 Range Rover engine. For 1995-1999 P38 Range Rover. NOT FOR 1995 Range Rover Classic. For 1999 model year, check last 8 characters for correct fit. This belt ONLY APPLIES HALFWAY THROUGH 1999 MODEL YEAR ( UP TO VIN XA410481 ) NOTE: An easy way to confirm correct fit for 1999 model year Range Rover's: This belt is correct if you have a single exhaust tail pipe. (Starting midway through 1999, Range Rover introduced the Bosch engine management system and added dual exhaust. IF YOUR RANGE ROVER HAS DUAL EXHAUST - THIS BELT IS NOT CORRECT.)