The driver's seat and the front passenger's seat of a 2000 Jaguar XJ8 are held in place with a total of eight bolts---two bolts in front of each seat and two bolts behind each seat. The rear passenger seat is a bench seat that consists of two parts, the bench itself and the back. Removal and replacement of the seats of the 2000 XJ8 requires only a few minutes.
Open the driver door to access the driver side seat. Locate the two front bolts on the forward edge of the seat rail. Push the seat all the way back.
Remove the two front two bolts with a socket wrench.
Push the seat all the way forward to access the bolts in the back. Remove the bolts with a socket wrench. Place all of the bolts to the side for use with the new seat.
Tilt the seat forward to unclip the wiring harness that controls the seat's electrical supply.
Pull the old seat out of the car and replace it with a new seat. Ensure the new seat is tilted with the headrest against the steering wheel. Push the electrical connector together to restore power to the seat controls.
Bolt the seat back to the floorboard with a socket wrench. Slide the seat back to access the two front bolt holes. Replace the bolts and tighten them with a socket wrench.
Replace the passenger seat following the same process.
Pull the seat back straight up to release it from the clips. Pull the seat back out of the car and place it in a dry, covered area.
Locate the bolts behind the seat cushion and remove them with a socket wrench. Push the seat belts down to the floorboard and pull the seat cushion out. Place it in a dry covered area.
Position the new seat cushion in the car. Bolt the new seat cushion to the floorboard.
Place the new seat back above the retainer clips on the sides of the rear deck. Push the seat back down until the clips catch the seat. Pull the seat forward to ensure it catches.