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Firestone 4135 Coil-Rite Air Helper Spring Kit for Coil Suspension

(Ford F-150 1975-87, F-250 1974-87, Bronco 1974-87, F-350 1974-87, F-100 1974-83, Bronco II 1984-87, Pinto 1978-79, E-350 Econoline 1975-87 + 117 more models)

Part of: Firestone Coil-Rite Air Helper

Other options in this family: Firestone 4175 Firestone 4119 Firestone 4155 Firestone 4164 Firestone 4108

Manufacturer

Picture for manufacturer Firestone

Part Number

4135
14 reviews
Sale Price

$151.33

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The Firestone Coil-Rite Air Helper Spring Kit is engineered to enhance the ride quality and load-carrying capability of vehicles equipped with coil spring suspension. Designed to fit inside your existing coil springs, this innovative system creates a variable spring rate that levels your vehicle and improves braking and handling performance, even under heavy loads and challenging road conditions.

Key Features:

  • Installs inside existing coil springs to provide adjustable load support
  • Supports 500-1,000 lbs. per set without exceeding vehicle GVWR
  • Constructed from durable, elastic polyurethane for long-lasting performance
  • Adjustable air pressure allows customization for varying loads and road conditions
  • Operates reliably in extreme temperatures from -40°F to 180°F (-40°C to 82°C)
  • Helps maintain proper ride height and vehicle stance when towing or hauling
  • Easy adjustment—simply add or release air pressure like inflating a tire

Coil-Rite air helper springs deliver years of comfort and stability by allowing you to fine-tune your suspension on demand. Whether you're carrying heavy cargo, towing a trailer, or driving unloaded, you can optimize your vehicle's performance with simple air pressure adjustments.

Products specifications

Fits

Ford F-150 1975-87, F-250 1974-87, Bronco 1974-87, F-350 1974-87, F-100 1974-83, Bronco II 1984-87, Pinto 1978-79, E-350 Econoline 1975-87, E-150 Econoline 1975-87, LTD 1978-79, E-250 Econoline 1975-87 + 114 more models

Position

Rear

Prop 65

No

Part was accurate and works !!!

services good, the parts I found through Amazon on your site were the wrong size. when I tried to re order through your site could not find them and had to call you customer service which was great

Recieve in reasonable time.. Great deal

Very easy to order

Great communication, fast shipping.

It went smoothly. The customer service is the best..arrived in 2 to 3days..awesome

This was the best price I could find. Free shipping. Two day delivery.

Very good service ....received correct part.

It was easy to order with my smartphone and PayPal for payment. Hoping the free shipping is fast.

Easy ordering. Bets price by far. Fast shipping.

easy, like the coices for checking out with amazon and paypal.

Autoplicity can not be beat on prices, handling, and shipping times! Very easy to deal with and quick to respond if you have any problems with your order! They are always looking out to save you money and get your parts fast!

no problems at all. found what i was looking for at the lowest price i could find

EXCELLENT SELLER I RECEIVED EMAIL CONFORMATION OF MY ORDER IN MINUTES. MY ORDER WAS SHIPPED WITHIN A DAY AND ITEM WAS AS DESCRIBED. THE SHIPPING PRICE WAS RESONABLE AND THE ITEM PRICE WAS ONE OF THE BEST I FOUND ON THE NET! <br>THANK YOU.

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