KYB 553390 Shock Absorber - Rear

Overview of KYB Gas-a-just Shock Absorber 553390

The KYB Gas-a-just suspension shock absorber 553390 is designed specifically for Mazda 3 models, providing reliable damping performance. This shock absorber features precise dimensions and mounting types to ensure proper fit and function for your vehicle's suspension system.

• Compressed Length: 19.48 inches
• Extended Length: 28.34 inches
• Stroke Length: 8.86 inches
• Lower Mount Type: E2 (12x36)
• Upper Mount Type: S1 (8mm)
• R-stop included, B-stop not included
• No dust cover or internal rebound spring

Details on KYB Gas-a-just Suspension Line

The Gas-a-just line by KYB is engineered to provide consistent gas pressure for improved shock absorber response and vehicle control. This product line focuses on delivering a balance between comfort and handling, making it suitable for daily driving conditions. The 553390 shock absorber is part of this line, designed to maintain stable damping characteristics for the Mazda 3.

Technical Description of Part Number 553390

This KYB Gas-a-just shock absorber 553390 has a compressed length of 19.48 inches and extends to 28.34 inches, offering a stroke length of 8.86 inches. The lower mount uses an E2 type with dimensions 12x36, while the upper mount is an S1 type with an 8mm diameter. The shock absorber includes an R-stop feature to limit extension but does not have a B-stop or internal rebound spring. It also does not come with a dust cover, which is typical for this model.

Common Applications and Problem Solving

• Restores proper damping for Mazda 3 suspension systems
• Reduces excessive bouncing and improves ride stability
• Addresses uneven tire wear caused by worn shocks
• Improves vehicle handling and control during cornering
• Eliminates noise and vibration from faulty shock absorbers

Installation Notes and Tips

When installing the KYB Gas-a-just shock absorber 553390 on a Mazda 3, ensure the correct orientation of the E2 lower mount and S1 upper mount. Verify the stroke length and compressed length to confirm fitment. Since this shock does not include a dust cover, inspect the mounting area for debris or damage before installation. Proper torque specifications should be followed to avoid premature wear.

Quality Assurance and Warranty

KYB manufactures the Gas-a-just shock absorbers to meet OEM standards for durability and performance. While specific warranty details for part number 553390 should be confirmed at the point of purchase, KYB typically offers limited warranties covering defects in materials and workmanship. This ensures confidence in the product's reliability for Mazda 3 suspension repairs.