Introductions: Thank you for considering our product as your first choice. In order to suppress the spring shock when inhaling the rebound after a shock and impact from the road, the Shock Absorbers is necessary for you to choose. After a rough road, although the shock absorption spring can filter the road vibration, but the spring itself will have a reciprocating motion, so the shock absorber is used to suppress this spring jumps. Made of high quality it is durable and sturdy in use. Features high corrosion resistance and long service life, it is an excellent product that you can't miss. The newly installed valve technology is based on the speed of the car. You should take it home without hesitation. Features: 1. Quality standards and performance 2. High corrosion resistance, long service life. Steel rods micro-polished with double chrome plate 3. The newly installed valve technology is based on the speed of the car 4. With Teflon bonded piston seal reduces friction and cool temperatures so that the valve remains firm 5. In the spring seat is all-round welding 6. Piston seal is provided by an supplier 7. Backed up by limited Lifetime warranty Specifications: 1. Interchange Part Number: 37133 2. Placement on Vehicle: Left, Right, Front 3. Fitment for:Year Make Model Trim Engine Notes 2004 Ford F-150Heritage All All (4WD) 1997-2003 Ford F-150 All All (4WD) 1/2-Ton, Includes Supercab, Includes 7700 GVW Package 1997-2002 Ford Expedition All All (4WD) With Rear Coil Springs, Excludes Four Corner Air Leveling System& Automatic Rear Air Leveling System 1997-1999 Ford F-250 All All (4WD) 3/4-Ton Light Duty - Less Than 8500GVW - (Excludes Rear Air Leveling Suspension) Package Includes: 2 xFront Shock Absorbers Return Policy All of our items come with a 30-day free return policy. If you need to return, please contact us, let us know the detailed problem and send us some pictures for confirmation. We reserve the right to refuse any returns for objective reasons. Shipping Policy All of our items are shipped free with tracking numbers. Orders will be shipped within 3 working days upon receipt of payment. Most orders will be shipped within 1 working day. In most cases, shipping takes 8-12 working days.