Gabriel Fleetline 85006 Heavy Duty Front/Rear Shock Absorber - Durable

In this review the Gabriel Fleetline 85006 is evaluated as a heavy duty shock built for buses, motorhomes and medium duty trucks. The bottom line: it is a direct replacement shock for many commercial and fleet vehicles and delivers noticeably improved ride quality and fit compared with worn originals. For fleet managers and owner-operators who need a shock designed for low friction air suspensions and high GVW applications, the 85006 offers a straightforward, serviceable option that addresses handling and comfort on rough roads.

Key Features

• Wide vehicle fitment: Fits a broad range of school buses, motorhomes, commercial Ford and Freightliner chassis and many trailer rear axles to simplify stocking one part for multiple units.
• Heavy duty construction: Built for commercial and fleet service so it is engineered to withstand the higher loads of Class 6-8 applications and air ride suspensions.
• Direct replacement sizing: Collapsed length, extended length and stroke match common OEM dimensions so replacement installs without modification.
• Multiple mount codes: Uses ES36 upper and lower mount codes for compatibility with common heavy duty mounts and brackets.
• Interchange coverage: Cross-references many OEM and aftermarket part numbers to help identify correct replacements across brands.
• Designed for low friction suspensions: Fleetline valving and construction are targeted at contemporary low friction air ride and comfort air systems.

Who It's For

This shock is aimed at fleet service technicians, RV owners and bus operators who require a heavy duty shock that fits a wide list of medium duty vehicles including Blue Bird, Freightliner, Ford F-53/F-59, Winnebago and several trailer and axle manufacturers. It is especially appropriate when replacing worn OEM shocks on air ride and comfort air suspensions where direct-fit dimensions matter.

Owners seeking a long-term high-mileage lifetime guarantee or those who need passenger car style comfort tuning should look elsewhere. Also, if corrosion resistance or specialized coating options are required for marine applications, consider shocks specifically specified for those environments.

Pros & Cons

Pros

• Broad fitment across buses, motorhomes, trucks and trailers makes inventory simple for fleet shops.
• Improves ride quality and handles potholes and rough roads better than many worn OEM units.
• Easy to install as a direct replacement for original equipment on listed models.
• Clear interchange listings and mount codes help ensure correct selection.

Cons

• Some customers report premature leakage or breakage in heavy service, so durability can vary in severe duty cycles.
• Not marketed with specialized corrosion protection options for extremely corrosive climates.

Specifications

Series	Fleetline 85000 series
Stroke (in)	11.41
Extended Length (in)	28.54
Collapsed Length (in)	17.13
Upper Mount Code	ES36
Lower Mount Code	ES36
Interchange Examples	CAX-898, ASH-1161, RT18165-01, F0HZ18124B

Our Verdict

The Gabriel Fleetline 85006 is a practical, value-oriented heavy duty shock for fleets, buses and motorhomes that need a direct replacement with improved ride control. It delivers tangible comfort and handling benefits for a wide list of chassis and trailer rear axles, and for most operators it represents solid value-though those in the harshest service conditions should monitor for leakage and consider a heavier duty spec or enhanced coating option.

Frequently Asked Questions

Will this shock fit my motorhome?
Check vehicle compatibility against the listed fitment (Ford F-53, Fleetwood, Winnebago, Entegra and others) and the mount codes ES36; many motorhome chassis are covered.

Is this a direct replacement for OEM shocks?
Yes. The Fleetline 85006 is designed as a direct replacement with matching collapsed and extended lengths and standard mount codes for compatible models.

How long will these shocks last in fleet service?
Many users report improved ride and good service life, but some have experienced premature leakage; longevity depends on duty cycle and operating conditions.