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Shock Absorber | Gabriel | Fleetline GasSLX

SKU GA89458

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2 In Stock as of December 07, 2022 1:10 AM EST.

Gabriel Fleetline GasSLX 3 position premium heavy duty adjustable shock 89458 provides customizable comfort and control, while delivering the ultimate in performance and durability for trucks, trailers or buses.

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Product Specs for Gabriel 89458

  • Manufacturers Part Number:89458
  • Performance:Premium
  • MPN: 89458
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Gabriel 89458 Details

Gabriel FleetLine GasSLX heavy duty shock absorbers feature three adjustable settings: Regular, Firm (closest to OE ride performance), and Extra Firm, to provide customizable comfort and control, while delivering the ultimate in performance and durability. Adapting to diverse road conditions and payload capacities, the GasSLX’s gas cell design creates a physical barrier between gas and fluid, which prevents aeration, a major cause of fade or reduced damping.

Gabriel GasSLX Features

  • Unique Gas Cell design reduces fade and increases ride comfort
  • Larger 1-5/8 inch bore design provides performance and durability you can count on
  • Super-finished chromed piston rod to inhibit corrosion, ensure proper seal, and provide a more consistent wear surface
  • 360° arc-welded end mounts provide superior structural strength
  • Specially formulated high-temperature fluid reduces friction and wear in extreme operating conditions
  • Multi-lip Viton Seal: a more robust design for greater fluid retention and high-temperature performance
  • Hydraulic Rebound Stop creates a hydraulic cushion preventing impact damage (where required by design)

Customer Q&A - Gabriel 89458

It's compatible with Internetional Prostar 2011 Vin bn195249

Gabriel shock 89458 does fit certain 2011 Prostar models. We will need the OEM number of your shocks to verify the cross. Unfortunately, we cannot look up the shocks by VIN. Feel free to call us at 1-800-358-4751 if you have any additional questions.

There are 3 settings, But How could we find out which setting is the best for the truck life? Please try to explain in detail about each settings, so we can get some knowledge and refer friends too. I already bought for my truck and trailer, but never used it so far, Just because I don't know what settings I suppose to put on? Now I am interested to buy 2 more for my Volvo vnl670, last 6 digit of my vin start with N-489206, Part number 20551628, Does your shock is compatible with my truck?

This shock GA89458 is not the replacement for Volvo part number 20551628. The correct replacement is a part number GA89448. By using the different settings Regular, Firm, and Extra Firm you can adjust the comfort and ride characteristics of the truck but choosing different settings will no effect the life of the truck. The firm setting will be closest to the OEM ride while the Regular will be softer and the Extra Firm will be stiffer.

Is this compatible with Volvo vnl670 vin last 6 digit start with N-489206 part # 20551628? (By Dealer).

This shock GA89458 is not the replacement for Volvo part number 20551628. The correct replacement is a part number GA89448.


Gabriel is one of the most popular and well recognized shock absorber companies in the world. Gabriel is an American company that manufactures high quality shock and struts that cover over 97% of cars and trucks made in North America.

Gabriel invented the automotive shock absorber in 1907. Gabriel is also invented the first every hydraulic shock and the first air adjustable shock absorber. They have been inventing and expanding with the automotive industry since the beginning.

Today, Gabriel is still a very innovative, independent American company. They continue to be one of the most trusted aftermarket and original equipment manufacturers for light- and heavy-duty shocks and struts. Gabriel goes through great lengths to ensure their new shock and struts are designed specifically to meet the needs of today’s vehicles and their drivers.

Gabriel shock absorbers and struts are backed by more than 100 years of innovation, engineering expertise and constant improvement in ride control products. Gabriel engineers, tests, and validates all of their shock and struts for proper fit, ride and durability to ensure you get the easy installation, high quality and long-lasting performance with every new Gabriel shock and strut.

TruckSpring.com is an authorized warehouse distributor for Gabriel shocks and struts. If you have any questions about Gabriel shocks, feel free to call us at 1-800-358-4751 or 989-755-0561. We have been selling and install Gabriel shocks and struts for years.

Gabriel Warranty

Limited Lifetime Warranty

On all Gabriel Shocks and Struts. We warrant these products against defects in workmanship or material.

What the warranty does not cover

Damage from accidents, corrosion, improper installation, incorrect applications, overloading, and custom applications that are not specified under the OEM cross references. This warranty does not cover loss of freight, loss of profit, equipment, or personal downtime. Any alteration of products beyond the included installation instructions will void the warranty.

You can view the full details of Gabriel’s warranty here.

How to get service

If a Gabriel product failure results from a manufacturer defect, contact us at Michigan Truck Spring for support. You can contact us by phone at 1-800-358-4751 or by using our contact form.

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