Sampa 500.903-01 Cab Air Spring / Air Bag – Peterbilt 378, 379, 384, 386, 388, 389

Replace a worn or leaking cab suspension air spring with the Sampa 500.903-01 Cab Air Spring. This air spring is designed for select Peterbilt heavy-duty trucks and helps support the cab while reducing vibration and improving ride quality.

The Sampa 500.903-01 is listed for Peterbilt 378, 379, 384, 386, 388 and 389 applications. Always verify the existing air spring and part number before ordering to ensure proper fitment.

Specifications

• Brand: Sampa
• Part Number: 500.903-01
• Type: Cab/Sleeper Air Spring
• Design Height: Approximately 7.00"
• Minimum Height: 4.00"
• Maximum Height: 15.40"
• Maximum Diameter: 5.60"
• Top Plate Diameter: 2.99"
• Bottom Plate Diameter: 2.29"
• Top Plate Stud/Hole: 1
• Bottom Plate Stud/Hole: 1
• Bumper: No
• Load @ 80 PSI: 874 lbs
• Load @ 100 PSI: 1,094 lbs

Applications

Commonly listed for:

• Peterbilt 378
• Peterbilt 379
• Peterbilt 384
• Peterbilt 386
• Peterbilt 388
• Peterbilt 389

Cross-Reference Numbers

• Peterbilt 29-03200
• Peterbilt 29-02454
• Peterbilt 2903200
• Firestone 7036
• Firestone W02-358-7036
• Goodyear 1S5-186
• ContiTech 68162
• ContiTech SC29-Y036
• Paccar T81-6002
• Alliance ABP N32 027036
• Triangle AS-5036
• Sampa 500.903-01

Important: Cross-reference numbers are provided for identification purposes. Verify the dimensions, mounting configuration, and original part number before installation.