{"product_id":"gabriel-fleetline-heavy-duty-rear-shock-absorber-85339-fleet-use","title":"Gabriel Fleetline Heavy Duty Rear Shock Absorber 85339 - Fleet Use","description":"\u003cp\u003eIn this review of the Gabriel FleetLine 85339 rear shock absorber, the bottom line is simple: this is a purpose-built heavy duty replacement for Class 8 motor coaches and low floor buses that prioritizes durability and ride control for fleet applications. Intended for technicians, fleet managers and owners of Motor Coach Industries D and G series coaches and similar Transportation Mfg Corp models, the review finds the shock delivers a firmer, more controlled ride and is a direct-fit replacement for multiple OEM numbers. It is especially notable for its application-specific valving and rugged construction, though some users reported durability concerns under extreme duty cycles.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect fitment:\u003c\/strong\u003e Works as a direct replacement for Motor Coach Industries D and G series rear bus applications, reducing install time and alignment headaches.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication valving:\u003c\/strong\u003e Tuned valving helps compensate for worn suspension and restores consistent ride control on heavy vehicles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy duty construction:\u003c\/strong\u003e 360-degree arc-welded end mounts and chromed piston rods provide corrosion resistance and longer service life in fleet environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensioned for coaches:\u003c\/strong\u003e With a 31.68 in extended length and 19.02 in collapsed length and a 12.66 in stroke, it matches the geometry required for many Class 8 coach rear suspensions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange versatility:\u003c\/strong\u003e Cross references a long list of OE and aftermarket part numbers, making it easier to source for legacy coaches.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eFleet mechanics, motor coach owners and operators of Motor Coach Industries D 4000\/D 4005 and G 4500 series coaches will get the most value from this shock; it is built for commercial duty and intended to replace original rear shocks on Class 8 buses and low floor models. The Gabriel FleetLine design aims to restore ride quality and handle the heavier loads and frequent stops typical of commercial service.\u003c\/p\u003e\u003cp\u003eThose who should look elsewhere include drivers of passenger cars, light trucks or recreational vehicles where a softer, comfort-oriented aftermarket shock is preferred, and operators needing an ultra-premium or extended-longevity option validated under specific extreme-duty warranties if fleet failures have been common in their service history.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eRobust construction and chromed piston rods increase resistance to corrosion and wear in fleet use.\u003c\/li\u003e\n\u003cli\u003eApplication-specific valving restores control for worn suspensions and improves ride quality over rough roads.\u003c\/li\u003e\n\u003cli\u003eDirect interchange with many OE numbers reduces sourcing complexity for older coaches.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eSome customers reported premature failures and oil leakage under heavy duty cycles, indicating varied durability in extreme service.\u003c\/li\u003e\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eGabriel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e85339 FleetLine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStroke\u003c\/td\u003e\n\u003ctd\u003e12.66 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExtended Length\u003c\/td\u003e\n\u003ctd\u003e31.68 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCollapsed Length\u003c\/td\u003e\n\u003ctd\u003e19.02 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUpper\/Lower Mount Code\u003c\/td\u003e\n\u003ctd\u003eEB3 \/ EB3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntended Vehicles\u003c\/td\u003e\n\u003ctd\u003eMotor Coach Industries D \u0026amp; G series, Transportation Mfg low floor buses\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe Gabriel FleetLine 85339 rear shock is a solid, cost-effective replacement for Class 8 motor coach rear suspensions that restores ride control and fits a wide range of legacy OE numbers. It offers good value for fleets and technicians who need a direct-fit heavy duty shock, but buyers in extreme continuous heavy-duty service should monitor long-term performance due to some reported durability and leakage issues.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eIs this shock a direct replacement for Motor Coach Industries D series coaches?\u003c\/strong\u003e\u003cbr\u003eYes. It is designed to directly replace rear shocks on MCI D 4000 and D 4005 coaches and other listed models.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the key dimensions to confirm fitment?\u003c\/strong\u003e\u003cbr\u003eCheck the extended length 31.68 in, collapsed length 19.02 in and stroke 12.66 in against the vehicle specification to confirm compatibility.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre these shocks suitable for heavy fleet use?\u003c\/strong\u003e\u003cbr\u003eThey are built for fleet and commercial duty with heavy construction and valving for worn suspensions, though some users have reported premature failures in extreme conditions.\u003c\/p\u003e","brand":"Gabriel","offers":[{"title":"Default Title","offer_id":48246620979419,"sku":"B005J93YJ6","price":78.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71d-bjFKhEL._AC_SL1500.jpg?v=1776282122","url":"https:\/\/gearmusthave.com\/products\/gabriel-fleetline-heavy-duty-rear-shock-absorber-85339-fleet-use","provider":"GearMustHave","version":"1.0","type":"link"}