Firestone W01-358-7994 Rubber Air Spring 3B12-328 Gooyear Truck Suspension Airbags

Firestone W01-358-7994 Rubber Air Spring 3B12-328 Gooyear Truck Suspension Airbags​

Product Information

Manufacturer: Firestone

Part Number: W01-358-7994

Manufacturer: Firestone

Part Number: W01 358 7994

Manufacturer: Firestone

Part Number: W013587994

Manufacturer: Contitech

Part Number: FT 330-29 546

Manufacturer: Contitech

Part Number: FT330-29 546

Manufacturer: Contitech

Part Number: FT330 29 546

Manufacturer: Contitech

Bellow Number: 64572

Manufacturer: Goodyear

Part Number: 3B12-328

Manufacturer: Goodyear

Part Number: 3B 12-328

Manufacturer: Goodyear

Part Number: 3B12 328

Manufacturer: Goodyear

Part Number: 3B 12 328

Manufacturer: Triangle

Part Number: 4546

Manufacturer: Triangle

Part Number: 6364

Waton&Chalin : AS-0019-F

Euolid/Meritor After Market : E-FS7994

3B7994 Triple Bellow Air Spring Technical Data

♦Cover Plate

Top Cover Plate Diameter: Ø231mm

Bottom Cover Plate Diameter: Ø231mm

♦Combo Stud/Bolt

Combo Stud: 1/4NPTF

Combo Stud: 3/4-16UNF

Threaded Hole of Top Cover Plate: 3/8-16UNC

Threaded Hole of Bottom Cover Plate: 2X3/8-16UNC

Combo Stud and Threaded Hole Center Distance of Top Vover Plate: 140mm

Distance Between Threaded Holes of Bottom Cover: 157.5mm

♦Rubber Bellow

Rubber Bellow Max Diameter: 330mm MAX.OD

Rubber Bellow Max Height: 460mm

Rubber Bellow Min Height: 160mm

The Working Stroke: 330mm

1. Stud - Manufactured as a permanent part of the bead plate assembly for maximum strength and durability. Used to attach the spring to the vehicle’s suspension.

2. Combo Stud - Serves the dual purpose of mounting the spring to the suspension and providing an entrance for air.

3. Blind Nut - Also a permanent part of the bead plate assembly. Provides an alternative mounting system to the stud.

4. Air Fitting - Usually 1/4 N.P.T. Provides an air entrance to the bellows.

5. Bead Plate - Crimped onto the bellows at the factory for a more durable design and maximum quality control. Allows 100% leakproof testing prior to shipment.

6. Bellows - The 'air bag' includes four plies of material: an inner layer, two plies of cord-reinforced fabric, and an outer cover.

7. Bumper - A solid rubber or engineered plastic device designed to prevent significant damage to the vehicle or suspension in the event of a sudden loss of air pressure in the spring.

8. Piston - Provides a lower mounting arrangement for the air spring. Controls the characteristics of the spring under changing pressure loads.

9. Piston Bolt - Attaches the piston to the bellows. Sometimes extended as a means of attaching the spring to the vehicle suspension.

10. Girdle Hoop - A wire-wound ring molded into the bellows to provide lateral stability in convoluted type springs.

Three Convoluted Air Spring

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