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🔧 Lock in your advantage—dominate every trail with PowerTrax precision!
The PowerTrax 1840-LR Lock-Right Differential Locker is a rugged, drop-in upgrade designed for Ford 10.25" open differentials with 35 spline axles. It delivers full-time automatic locking for superior traction, fits multiple Ford models including F-250 and F-350, and requires no modifications for installation. Built with premium materials and backed by a 2-year/100,000-mile warranty, it ensures reliable performance on and off-road while eliminating maintenance hassles associated with clutch-based lockers.


























| ASIN | B00IVQIO0S |
| Best Sellers Rank | #160,547 in Automotive ( See Top 100 in Automotive ) #2 in Automotive Replacement Splined Drives |
| Brand | PowerTrax |
| Customer Reviews | 4.1 4.1 out of 5 stars (16) |
| Date First Available | February 27, 2014 |
| Exterior | Machined |
| Is Discontinued By Manufacturer | No |
| Item Weight | 6.25 pounds |
| Item model number | 1840-LR |
| Manufacturer | Powertrax |
| Manufacturer Part Number | 1840-LR |
| Model | 1840-LR |
| OEM Part Number | 544911, LBF10.25 |
| Product Dimensions | 10.5 x 5.9 x 3.1 inches |
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