Air suspension bag designed as a direct replacement for multiple models including Firestone, ContiTech, Dunlop, and various aftermarket equivalents.Matches OEM specifications for fit and function in heavy-duty trailer and commercial vehicle applications. plate size: M12.Center distance between mounting bolts: 159 mm (6.26 inches).Bottom plate size: M14x1.75.Air inlet thread: M22x1.5.plate diameter: 287 mm (11.3 inches).Bottom cover diameter: 260 mm (10.24 inches).Stroke range: 250 mm (9.84 inches) to 660 mm (25.98 inches).Internal jounce bumper is not included. Constructed with natural rubber compound for durability and resilience in demanding operating conditions.Piston made from SPHC steel for structural integrity.Rubber thickness meets or exceeds 4.5–5.0 mm for enhanced longevity.Equipped with 12.9 grade -strength steel studs.Capable of withstanding up to 2 MPa of internal air pressure before rupture. Unit undergoes full air tightness testing.Fatigue tested for over 4, 000, 000 cycles to long service life.Suitable for in temperatures ranging from -40°F to 158°F. Supports consistent ride height and load distribution across axles.Helps reduce stress on vehicle components such as tires, brake linings, and suspension parts.Contributes to improved driving comfort and reduced fatigue during extended.Aids in wear on trailer frame, and body structures. Quantity: 1 piece.Condition:.Package dimensions: 45 x 37 x 37 cm (17.72 x 14.57 x 14.57 inches).Package weight: 16.8 kg (37 lbs). Note: This part is made by an independent vendor.Any brand/model mention is for compatibility purposes only.