• Fortpro F245585 air spring 2-pack with aluminum piston, replacement for Firestone 9781
  • Fortpro air spring key features: replacement for Firestone 9781 and Freightliner 681-320-0017, bolt-in, aluminum piston
  • Fortpro F245585 air spring dimensions: 9.00 in top plate, 6.20 in stud spacing, 10.62 in piston, 8.75 to 23.00 in height
  • Top plate of Fortpro F245585 air spring with 1/2-13 UNC stud and 3/4-16 UNF combo stud with 1/4-18 NPT air inlet
  • Close-up of the brushed aluminum piston and 1/2-13 UNC stud on the Fortpro F245585 air spring
  • Fortpro F245585 replacement for Freightliner 681-320-0017, Firestone W01-358-9781, Goodyear 1R12-603, Contitech 64266
  • Fortpro F245585 air springs
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Fortpro

Fortpro Air Spring 2-Pack with Aluminum Piston for Freightliner 681-320-0017 | Replaces Firestone W01-358-9781, Goodyear 1R12-603 | F245585-2QTY

Fortpro Air Spring 2-Pack with Aluminum Piston for Freightliner 681-320-0017 | Replaces Firestone W01-358-9781, Goodyear 1R12-603 | F245585-2QTY

SKU: F245585-2QTY

Availability: More than 50 in Stock

$137.28 USD
$0.00 USD $137.28 USD
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Compatibility & Purchase Guidelines

  • Verify OEM Compatibility: Always match your OEM part number with our cross-reference list before purchasing to ensure proper fitment.
  • Avoid Returns: Do not rely solely on visual similarity. Parts may look identical but differ in specifications. Confirm compatibility using part numbers.
  • Truck Brand Reference Disclaimer: Mentioned truck brands are provided for general reference only and do not guarantee universal compatibility across all models.

Shipping Policy

In order to send your purchase, our company may use different freight companies like USPS, UPS and some 3rd Carrier Services for Oversize orders, this will not affect the final price of your order. We will send you all the information in due time. 

For Free Shipping and Freight/Oversize Shipments tthere are some special terms you may check at our Terms & Conditions page.

 

Return Policy

If for any reason you need to return a purchased item, we have a 30-day return policy, which means you have 30 days after receiving your item to request a return.

To be eligible for a return, your item must meet the conditions established in our Terms & Conditions.

To start a return, you can contact us at admin@maxitrucks.com. 

Key Features & Benefits

  • Direct replacement: Replacement for Freightliner 681-320-0017, A16-14004-000 and A16-17574-002; Firestone W01-358-9781 (1T15ZR-6); Goodyear 1R12-603; Contitech 64266; confirm your number against the full cross-reference list
  • Aluminum piston: Reversible sleeve air spring with an aluminum piston base and fiber reinforced rubber bellows; bolts to the original mounting points with no modifications
  • OE dimensions: 8.75 in collapsed height; 23.00 in extended height; 9.00 in top plate; 10.62 in piston diameter; 6.91 in piston height; 1/2-13 UNC studs; 3/4-16 UNF combo stud with 1/4-18 NPT air inlet
  • Freightliner AirLiner rear fitment: For Freightliner AirLiner rear suspensions on Cascadia, Century Class, Columbia and Coronado; check your part number before ordering, as models can use different air springs
  • Replace in pairs: Install new air springs on both sides of the same axle to keep ride height even; release all air pressure and support the frame before removing the old spring
View full details

The Fortpro F245585 is a reversible sleeve (rolling lobe) air spring with an aluminum piston. It is a replacement for Freightliner 681-320-0017, Firestone W01-358-9781 and Goodyear 1R12-603 on Freightliner AirLiner rear suspensions. Match the part number on your current air spring before ordering: air springs that look alike can differ in piston height, plate size or stud layout.



Fortpro Logo

Fortpro is a trusted leader in the development and manufacturing of premium-quality truck parts designed to meet the demands of semi-trucks and heavy-duty trucks. Renowned for innovation, durability, and reliability, Fortpro products are engineered to enhance performance, safety, and efficiency across a wide range of trucking applications.

Whether you're seeking OEM replacement parts or upgrades, Fortpro provides a diverse selection of components backed by a global reputation for quality and innovation. Trust Fortpro for the parts you need to keep your vehicles on the road longer and stronger.

Basic Part Information5 attributes
Basic Part Information
Product LineSuspension
Category NameAir Springs and Bags
Part TypeRolling Lobe Air Spring
Alternate Part NameAir Bag Suspension, Air Suspension Bag, Reversible Sleeve Air Spring, Rolling Lobe Air Spring, Air Ride Spring, Pneumatic Spring, Suspension Air Bag, Air Spring Bag, Rear Air Bag, Truck Air Bag
OEM Part Number681-320-0017
Application/Fitment Attributes3 attributes
Application/Fitment Attributes
Application TypeSemi-Trucks, Heavy Duty Trucks
Mounting PositionRear Axle
VMRS Code016-008-000
Dimensional/Physical Attributes15 attributes
Dimensional/Physical Attributes
MaterialFiber reinforced rubber bellows
Air Inlet Inside Thread1/4-18 NPT
Air Inlet Outside Thread3/4-16 UNF
Body Diameter12.60 in.
Bottom Plate AlignmentParallel
Bottom Plate Diameter10.62 in.
Bottom Plate Stud1/2-13 UNC
Mounting Stud Configuration - Bottom1
Mounting Stud Configuration - Top2
Piston Diameter10.62 in.
Piston Height6.91 in.
Piston Material TypeAluminum
Top Plate C To C Diameter6.20 in.
Top Plate Diameter9.00 in.
Top Plate Stud1/2-13 UNC
Technical/Performance Attributes3 attributes
Technical/Performance Attributes
Air Spring Type1T Reversible Sleeve
Collapsed Length8.75 in.
Extended Length23.00 in.
Packaging / Logistics Attributes:1 attribute
Packaging / Logistics Attributes:
Net Weight17.20 lb.
Intended Application
Intended Application
  • Freightliner AirLiner rear suspension: Cascadia, Century Class, Columbia and Coronado
  • Semi-trucks and heavy-duty trucks
Technical Notes
Technical Notes
  • Design height: 12.50 in.
  • No internal bumper
  • Torque the 1/2-13 UNC nuts to 35 lbf ft max and the 3/4-16 UNF combo stud to 50 lbf ft max
  • Release all air pressure and support the frame before removal
  • Check ride height after inflating
  • Freightliner: 681-320-0017, A16-14004-000, A16-14004-001, A16-17574-000, A16-17574-001, A16-17574-002, 16-17575-000, 16-19465-000, 16-19466-000, 16-19768-000
  • Firestone: W01-358-9781, 9781, 1T15ZR-6, W01-377-8527, W01-377-8529, W01-377-8536, W01-377-8537, 8536, 8537
  • Goodyear: 1R12-603, 566-24-3-108
  • Contitech: 64266, 9 10S-16A382, AS9781
  • Automann: AB1DF23-9781
  • Triangle: AS-8382, AS-8999
  • Torque: TR9781
  • FleetPride: AS9781, HDV9781
  • TRP: AS73389
  • Meritor: MAF9781
  • Alliance: ABP-N32-019781
  • Dayton: 452-9781L
  • World American: WA01-9781C
  • Airtech: 39781KALU
  • Taurus: 6363
Dimensions Not Available.