Freightliner A16-21558-001 Air Spring

Genuine Freightliner Air Spring - A16-21558-001

The fitting it takes is 23-14559-003 in a 45-degree to 3/8 plastic tubing.  This is a 12mm with an o-ring seal.  

**If this air bag is replacing previous versions that had 1/4MPTx3/8PTC fittings, it will also require changing the air bag fittings with one of the following, depending on what the original had.
23-14559-003  M12x3/8PTC 45degree.
23-14405-003  M12x3/8PTC Straight.
23-14558-003  M12x3/8PTC 90degree.

Freightliner A16-21558-001 is a heavy-duty air suspension spring engineered to restore proper ride height, load support, and shock absorption to your commercial truck. Designed as a direct genuine replacement for the rear suspension, this rugged air spring features a 200 psi burst pressure and operates reliably in extreme temperatures ranging from -40°C to 65°C. Built with a durable rubber bellows and a sturdy 10.63-inch piston, replacing a leaking or blown air bag with the exact A16-21558-001 unit protects your chassis from damaging vibrations and ensures a safer, smoother ride under heavy hauling conditions.

Piston Diameter: 10.63 in
Hole Thread Size: M12X1.5 mm
Extended Height: 12.92 in
Top Plate Diameter: 8.94 in
Inlet Thread Size: M12X1.5 mm
Mounting Stud Thread Size: 1/2-13 UNC in

Type:  Rolling Lobe Spring
Piston Material:  Plastic

Maximum Operating Pressure:  100 psi
Burst Pressure: 200 psi
Minimum Operating Pressure:  5 psi 

Operating Temperature: -40 to 65 Deg.C

Maximum Load Capacity:  7733.42 lbs

Parts Cross Reference

Genuine Freightliner Truck Parts Warranty

With limited warranty protection on aftermarket truck parts sold through authorized Freightliner dealers, DTNA covers defective materials and/or workmanship for one year. For details on coverage, contact your local dealer.