Product Description
The Goodyear 3B12-329 Triple-Convoluted Bellows Air Spring is a heavy-duty replacement suspension air bag designed for commercial trucks, trailers, and compatible air ride suspension systems, including select Watson & Chalin suspension configurations. Engineered to provide dependable air cushioning and load support, this air spring helps absorb road shock, reduce vibration, and maintain stable suspension performance under varying load conditions.
Featuring durable reinforced rubber construction and heavy-duty metal mounting plates, the 3B12-329 utilizes a triple-convoluted design with three flexible bellows sections. This construction provides controlled compression and extension, helping reduce stress on surrounding suspension components while improving ride comfort and protecting cargo from road vibration.
The Goodyear 3B12-329 provides a reliable replacement for worn, damaged, or leaking suspension air springs. Its rugged construction makes it suitable for demanding commercial transportation environments where dependable suspension operation and load support are essential.
Specifications:
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Manufacturer: Goodyear
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Part Number: 3B12-329
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Product Type: Heavy-Duty Suspension Air Spring
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Design: Triple-Convoluted / Three-Bellows
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Construction: Reinforced Rubber Bellows with Metal Mounting Plates
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Maximum Extended Height: Approximately 16.73 inches
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Minimum Compressed Height: Approximately 4.53 inches
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Top Plate Diameter: 9.00 inches
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Bottom Plate Diameter: 9.00 inches
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Maximum Bellows Diameter: Approximately 12.80 inches
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Top Mounting: Two Mounting Points
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Bottom Mounting: Two Mounting Points
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Top Mounting Center Spacing: 5.50 inches
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Bottom Mounting Center Spacing: 6.20 inches
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Air Connection: 1/4-inch NPTF
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Goodyear Bellows Number: 578-93-3-100
Cross-Reference Part Numbers:
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Firestone: W01-358-7995
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Continental/ContiTech: 64573, FT 330-29 547
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Watson & Chalin: AS-0048-1F
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Automann: ABSP3B22R-7995
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Triangle: AS-4547, AS-4703
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Dayton Parts: 354-7995, 454-7995L
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Meritor: FS7995
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World American: WA01-7995C
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Euclid: E-FS7995
Important Fitment Note: Designed for select commercial truck and trailer air suspension systems. Verify the original equipment part number, mounting hole arrangement, air connection, and suspension dimensions before ordering to ensure proper fitment. Similar triple-convoluted air springs may have different mounting configurations and are not necessarily interchangeable.