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(888) 312-8812 Login SignupThe JOST Trailer Jack Gearbox Cover shields the jack’s internal drive components with a steel plate sized at 5.5 inches by 5.5 inches, helping retain structural integrity around the gearbox cavity. Its single-speed configuration pairs effectively with standard jack housings, giving the protective plate a secure seating surface during installation. The steel body handles exterior exposure that trailers face during long waiting periods, whether at distribution yards or job sites. Fastener alignment keeps the cover positioned squarely around the gearset, which helps preserve smooth hand-crank motion throughout the service life of the jack assembly. Those refreshing trailer support hardware will find consistent value in the JOST C10259.
| Notes | For Non-Gear Leg |
| Finish | Prime |
| Material | Steel |
| Length | 5.5 in. |
| Width | 5.5 in. |
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