Looking for in-stock aftermarket parts to modify or upgrade your 1990 Ford Thunderbird with differentials? At Tunersports.com we carry a huge selection of the top name brand performance differential parts and accessories.

IN STOCK - LOW YDGF8.8-28-1Yukon Dura Grip is a positraction limited slip differential that provides smooth yet aggressive traction, giving you the confidence and performance you need across a wide variety of terrains. The Dura Grip is engineered for long life and is completely rebuildable. Dura Grips are constructed with a h... Yukon Gear Dura Grip Positraction For Ford 8.8in w/28 Spline Axles 1987-1992 Ford Thunderbird Base 1987-1997 Ford Thunderbird LX 1989-1995 Ford Thunderbird Super Coupe $910.89 |

IN STOCK - DROPSHIPS SL XP-F8.8USA Standard Spartan Locker 8.8in Ford Spartan Locker Cross Pin 1987-1992 Ford Thunderbird Base 1987-1997 Ford Thunderbird LX 1989-1995 Ford Thunderbird Super Coupe $56.89 |