A whine or howl that rises and falls with your speed, clunking when you shift from Drive to Reverse, or gear oil weeping at the rear cover means the differential needs attention. We handle front and rear, limited slip and open: bearings, pinion seals, ring and pinion sets, spider gears, full rebuilds and complete replacement, on cars, trucks, vans and work fleets. Caught early it is a small job. Left alone it takes the axle with it. Free diagnosis either way. ¡Hablamos español!