Hendrickson S-4771 Trailer Air Spring Bag 19.25" Extended Height 10,125 lbsf Capacity at 90 psig
High-performance trailer air spring bag designed as a direct replacement for multiple OEM parts including Firestone 8050, Hendrickson S-4771, and Goodyear 1R14-039 models.
- Easy to identify part number permanently engraved on the rubber
- 4.5-5.00mm thick rubber that exceeds OEM requirements
- 25% stronger 4140 grade steel studs
- Stronger composite pistons for enhanced durability
- Highest leak test ratio after final assembly
| Specification | Value |
|---|---|
| Extended Height | 19.25" |
| Compressed Height | 5.80" |
| Top Plate Width | 11.31" |
| Piston Width | 11.62" |
| Weight | 25.00 lbs |
| Air Fitting Size | 2 x Combination Stud/Air Inlet Stud Outside Thread 3/4-16; Inside Thread 1/4 N.P.T. |
| Loading Capacity at 20 psig | 2,250 lbsf |
| Loading Capacity at 60 psig | 6,750 lbsf |
| Loading Capacity at 90 psig | 10,125 lbsf |
| Operating Temperature Range | -54°C to 57°C |
| Design Height | 9-10.5" |
Guangzhou Viking Auto Parts Co., Ltd. - Established in 2010, specializing in high-quality air spring manufacturing. Located in Guangzhou Conghua Pearl Industrial Park with 30,000 square meters facility and annual production capacity of 1,000,000 pieces.
Certifications: IATF 16949:2016 and ISO 9001:2015 certified.
OEM Partnerships: Supplies major truck manufacturers including Shacman, Dayun, Dongfeng Liuqi, and Forton. Also provides components for Mercedes-Benz, BMW, Audi, Porsche, and Land Rover.
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