Coil Spring Rear RA5613 KYB

This KYB Coil Spring is designed for the rear axle of compatible Ford Focus models. It features a ...

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Product Information

Full details

This KYB Coil Spring (RA5613) is designed for the rear axle of specific Ford Focus I models (1999-2004) with 1.4L, 1.6L, and 1.8L engines. It offers a reliable replacement for restoring proper rear suspension height and performance. A key caveat is that professional installation is recommended due to the nature of suspension components.

All features

Model Part NumberRA5613
BrandKYB

Extended Product Information

FAQs

What is the primary function of this coil spring?

This coil spring is designed to support the weight of the rear of the vehicle, maintain the correct ride height, and absorb road imperfections to provide a comfortable ride.

Does this part come with installation hardware?

No, this product is for the coil spring only. Installation hardware, such as spring isolators or bump stops, are typically sold separately or may need to be reused from the original assembly if in good condition.

What does 'K-Flex' suspension mean?

K-Flex refers to KYB's specific suspension technology designed to enhance ride comfort and handling stability. This spring is engineered to work within that system.

How do I know if my coil springs need replacing?

Symptoms include a sagging rear end, uneven tire wear, a rough or bouncy ride, and visible damage or corrosion on the springs.

Should I replace just one rear spring or both?

It is highly recommended to replace coil springs in pairs (both left and right sides) on the same axle to ensure balanced performance and prevent vehicle handling issues.

What is the weight of this coil spring?

The KYB Coil Spring RA5613 weighs approximately 3.62 kg.

What is the difference between the listed OEM numbers?

These are various Ford original equipment manufacturer (OEM) part numbers that this KYB replacement part is designed to supersede or be equivalent to, ensuring proper fitment for the specified vehicle models.

Troubleshooting

Vehicle sits unevenly after installation.

Ensure both rear springs were replaced. If only one was replaced, replace the other side. Verify the spring is seated correctly in its upper and lower perches.

Clunking or popping noise from the rear suspension.

Check that the spring is properly seated and that all related suspension components (shocks, bushings) are in good condition and securely fastened. The spring isolator might be missing or damaged.

Spring is not fitting correctly.

Double-check the part number and vehicle compatibility. Ensure no foreign debris is in the spring perch. Confirm you have the correct orientation of the spring.

Pros and Cons

Pros

  • Ensures correct vehicle ride height.
  • Restores original suspension performance and comfort.
  • Designed for a precise fit on compatible Ford Focus models.
  • Manufactured by a reputable suspension brand (KYB).
  • Offers a cost-effective replacement for worn-out springs.

Cons

  • Requires professional installation for safety and proper function.
  • Only compatible with specific Ford Focus I models and engine sizes.
  • Sold individually; replacement typically requires two springs for even wear.
  • Does not include other necessary suspension hardware (e.g., isolators, bump stops).

Setup, Compatibility & Care

Compatibility Check: Before purchasing, it is crucial to verify that this KYB Coil Spring RA5613 is compatible with your specific Ford Focus I model, year, and engine size. Use the provided OEM cross-references and check the vehicle's production date range (February 1999 - November 2004). Always consult your vehicle's service manual or a professional mechanic if unsure.

Installation: Coil springs are a critical safety component. Installation involves lifting the vehicle, safely supporting it, and compressing the spring to remove and replace it. Due to the high forces involved, professional installation by a qualified mechanic is strongly recommended to ensure correct fitting and safety. It is standard practice to replace coil springs in pairs (both rear springs) to ensure even suspension performance and prevent handling issues.

Care: Once installed, coil springs require minimal direct care. However, it's good practice to periodically inspect your suspension system for any signs of damage, corrosion, or unusual noises. Keeping the undercarriage clean can help prevent excessive rust buildup.

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