Product Description
The Goodyear 3B12-312 Triple-Convoluted Bellows Air Spring is a heavy-duty replacement suspension air bag designed for commercial trucks and trailers equipped with compatible Hendrickson and Watson & Chalin air suspension systems. 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 Goodyear's durable Super-Cushion construction, the 3B12-312 incorporates three reinforced rubber bellows sections and heavy-duty mounting plates. Its triple-convoluted design provides controlled compression and extension, helping reduce stress on surrounding suspension components while improving ride comfort and protecting cargo from road vibration.
The Goodyear 3B12-312 features an internal bumper for additional suspension protection. It provides a reliable replacement for worn, damaged, or leaking air springs, helping restore proper suspension operation, vehicle stability, and ride comfort.
Specifications:
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Manufacturer: Goodyear
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Part Number: 3B12-312
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Product Line: Super-Cushion
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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: 18.00 inches
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Minimum Compressed Height: 4.50 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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Top Mounting: Two Mounting Points
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Bottom Mounting: Four Mounting Points
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Mounting Center Spacing: 6.20 inches
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Air Connection: 1/4-inch NPT
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Internal Bumper: Yes
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Goodyear Bellows Number: 578-93-3-100
Cross-Reference Part Numbers:
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Firestone: W01-358-8033
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Continental/ContiTech: 64571, FT 330-29 525
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Hendrickson: B-14487, S-14487, 003316
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Automann: ABSP3B22R-8033
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Watson & Chalin: AS-0168-G
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Triangle: 4508, 4525, AS-4525
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Dayton Parts: 354-8033
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Meritor: FS8033
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TRP: AS80330
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Loadguard: SC2784
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Sampa: SP 558033
Important Fitment Note: Designed for select commercial truck and trailer air suspension systems, including configurations using Hendrickson B-14487 and S-14487 air springs. 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.