Product Description
The Goodyear 3B12-315 Triple-Convoluted Bellows Air Spring is a heavy-duty replacement suspension air bag designed for commercial trucks, trailers, and compatible auxiliary 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 3B12-315 incorporates three reinforced rubber bellows sections and heavy-duty metal 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 3B12-315 provides a reliable replacement for worn, damaged, or leaking suspension air springs. Its reinforced construction and compact mounting arrangement make it suitable for demanding commercial vehicle suspension environments.
Specifications:
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Manufacturer: Goodyear
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Part Number: 3B12-315
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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: 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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Goodyear Bellows Number: 578-93-3-100
Cross-Reference Part Numbers:
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Continental/ContiTech: 64573, FT 330-29 547
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Watson & Chalin: AS-0048-1F
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Triangle: 4546
Important Fitment Note: Verify the original equipment part number, mounting plate configuration, mounting hole arrangement, and suspension dimensions before ordering. Similar triple-convoluted air springs, including Goodyear 3B12-319 and 3B12-329, may have different mounting configurations and are not necessarily interchangeable.