Coil Spring - Front - RA4131 - KYB

This KYB coil spring is designed for the front axle of vehicles. It is a suspension spring with a ...

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Coil Spring Front RA4131 KYB Suspension 4813102L30 4813102N80 4813102V60 Quality

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Product Information

Full details

This KYB RA4131 coil spring is designed for the front axle of compatible Toyota Auris models. It provides a direct replacement for worn or damaged suspension springs, restoring ride comfort and handling. A potential caveat is the need for professional installation due to the nature of suspension work. Key features include its K-Flex coil spring design, specific dimensions for optimal fit, and compatibility with original Toyota part numbers.

All features

Model Part Number	RA4131
Brand	KYB

Extended Product Information

FAQs

Do I need to replace both front coil springs at the same time?

It is highly recommended to replace coil springs in pairs (both front springs) to ensure consistent ride height and handling characteristics on both sides of the vehicle. Replacing only one can lead to the vehicle leaning.

What is the K-Flex design?

K-Flex refers to a specific type of coil spring construction, often designed for optimal performance and durability within a vehicle's suspension system.

How long does it take to install a coil spring?

Installation time can vary depending on the vehicle and the mechanic's experience, but typically it can take 1-2 hours per spring. This does not include the time for a wheel alignment.

What is the weight of the KYB RA4131 coil spring?

The KYB RA4131 coil spring weighs approximately 1.9 kg.

Can I use this spring on the rear axle?

No, the KYB RA4131 is specifically designed for the front axle of compatible vehicles.

What should I do if I'm unsure about compatibility with my vehicle?

Please use the vehicle make model tool provided on the product page or contact customer support with your vehicle's VIN (Vehicle Identification Number) for precise fitment confirmation.

Troubleshooting

Vehicle front end is sagging on one side

This could indicate a broken or severely weakened coil spring. Inspect the front springs for damage or compression. Replacement of the affected spring (and potentially the other side for balance) is recommended.

Uneven tire wear

Sagging suspension from worn springs can lead to incorrect wheel alignment, causing uneven tire wear. Replacing the springs and performing a wheel alignment should resolve this issue.

Harsh ride or excessive bouncing

Worn coil springs lose their ability to absorb impacts effectively. Replacing the springs with new ones like the KYB RA4131 will restore proper damping and ride comfort.

Pros and Cons

Pros

Restores original ride comfort and handling.
Ensures proper fitment for specified Toyota Auris models.
Durable construction for long-lasting performance.
Directly replaces OE parts, simplifying the replacement process.
High-quality manufacturing by KYB.

Cons

Requires professional installation due to suspension system complexity.
Only compatible with specific Toyota Auris model years and engines.
Does not include any additional mounting hardware.
Weight of 1.9 kg, typical for suspension components.

Setup, Compatibility & Care

Setup:

Installation of front coil springs is a complex task that requires specialized tools and knowledge of automotive suspension systems. It is highly recommended to have this part installed by a qualified mechanic. The process typically involves:

Safely lifting and supporting the vehicle.
Disassembling suspension components to access the coil spring.
Compressing the old spring using a spring compressor.
Removing the old spring and installing the new KYB RA4131.
Reassembling suspension components and lowering the vehicle.
Performing a wheel alignment after installation is crucial.

Compatibility:

This KYB coil spring (RA4131) is specifically designed for:

Toyota Auris (_E18_) 1.2 (NRE185_, NRE185R) Hatchback Petrol models manufactured between March 2015 and December 2018.
Toyota Auris (_E18_) 1.4 D-4D (NDE180_, NDE180R) Hatchback Diesel models manufactured between October 2012 and December 2018.

It is compatible with Toyota OEM references: 4813102L30, 4813102N80, 4813102V60, and 4813102V70. Always double-check your vehicle's specific OEM part number or use a vehicle fitment tool before purchasing. If unsure, contact customer support with your vehicle's VIN.

Care:

Coil springs are generally maintenance-free components. Regular visual inspections of the suspension system during routine maintenance are advised. Look for any signs of rust, cracks, or damage on the spring. Ensure the surrounding suspension components are clean and free from excessive dirt or debris that could cause premature wear.