What exactly is included with this product?

This product includes the replacement air helper spring bellows only. It is designed to be used with Firestone Coil-Rite air helper spring kits that have part numbers 4108 or 4121. It does not include the full air spring kit components.

How much weight can these replacement bellows support?

When used as part of the complete Coil-Rite air helper spring system, these bellows are designed to support between 500 and 1000 lbs per set. It's important to ensure the total weight does not exceed your vehicle's Gross Vehicle Weight Rating (GVWR).

Can I use these replacement bellows on any vehicle?

These replacement bellows are designed for vehicles with coil spring suspension. They fit a broad range of makes and models, but you should always verify fitment for your specific vehicle using the provided compatibility information.

Firestone Coil-Rite Replacement Bellow (For Kit PN 4108 / 4121) (W237606003)

Specifications

Brand: Firestone
Part #: 6003
UPC: 767555098035

Firestone Coil-Rite Replacement Bellow (For Kit PN 4108 / 4121) (W237606003)

Name: Firestone Coil-Rite Replacement Bellow (For Kit PN 4108 / 4121) (W237606003)
Brand: Firestone
Price: 71.12 USD
Availability: InStock

$71.12

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Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Firestone Coil-Rite replacement bellows for coil spring suspension. Helps level your vehicle and improve handling under load.

Key Features

This product is a replacement bellows for Firestone Coil-Rite air helper spring kits (PN 4108/4121).
Constructed from durable, elastic polyurethane for long-lasting performance.
Supports 500-1000 lbs per set, not to exceed vehicle's GVWR.
Operates effectively in temperatures ranging from -40°F to 180°F.
Helps level the vehicle and improve braking and handling under load.
Allows for adjustable air pressure to adapt to varying loads and road conditions.

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Will this fit your vehicle?

Product Details

What you get here are the replacement bellows for the Firestone Coil-Rite air helper spring system, specifically designed to work with kits part numbers 4108 and 4121. These aren't the complete air spring kits, but the durable polyurethane bags themselves. If your existing Coil-Rite bellows have seen better days, this is what you need to get them back in service.

These bellows are made from a tough, elastic polyurethane that can handle a wide range of temperatures, from -40°F to 180°F. When installed inside your vehicle's existing coil springs, they allow you to add or release air pressure to create a variable spring rate. This means you can adjust your suspension to better handle varying loads and road conditions, which can lead to a smoother ride, improved braking, and more stable handling, especially when towing or carrying heavy cargo. They are designed to support between 500 and 1000 lbs per set, without exceeding your vehicle's Gross Vehicle Weight Rating.

This part fits a wide variety of vehicles with coil spring suspensions, including many Chevrolet Tahoe, GMC Yukon, and Cadillac Escalade models. Make sure to check the fitment details to confirm compatibility with your specific vehicle.