Fitment for: 2002-03 Ford Explorer 4 Door Front Driver Side & Passenger Side Suspension Strut Assembly 2002-03 Mercury Mountaineer Front Driver Side & Passenger Side Suspension Strut Assembly Recommended replacement cycle: Since the average annual distance of the car is 20,000 kilometers, and the shock absorber needs to be replaced in pairs, the replacement frequency is obtained every 4 years. When driving a certain number of kilometers, we should take corresponding measures to ensure our driving safety.