Looking for aftermarket parts to modify or upgrade your 1989 GMC C1500 with differentials? At Tunersports.com we carry a huge selection of the top name brand performance differential parts and accessories for your C1500.
Whether you have a 1989 GMC C1500 in Sierra to Sierra SLX trim we have you covered. We have 6 differentials available to mod your C1500. All parts have free shipping to the Continental US 48 States.
 IN STOCK RD197With our improved two piece design available right across the range, along with the addition of forged gears and an industry leading five year warranty, ARB Air Lockers are now better built and better backed than ever before. Created to provide 100 percent traction on demand, without sacrificing any... ARB Airlocker Aam 925&950 33 Spl S/N 1988-1993 GMC C1500 Sierra / Sierra SLX 1988-1999 GMC C1500 Sierra SLE $1,231.00 |
 IN STOCK YDGGM8.5-3-28-1The Yukon Dura Grip provides aggressive yet smooth traction to give you the confidence and performance you need. Get longer life and better traction with the heavy duty Yukon Dura Grip Positraction.... Yukon Gear Dura Grip Positraction For GM 8.5in w/ 28 Spline Axles 1988-1990 GMC C1500 Sierra / Sierra SLE / Sierra SLX $799.89 SALE VIEW PRICE IN CART |
 IN STOCK YDGGM9.5-33-1The Yukon Dura Grip provides aggressive yet smooth traction to give you the confidence and performance you need. Get longer life and better traction with the heavy duty Yukon Dura Grip Positraction.... Yukon Gear Dura Grip Positraction For GM 9.5in w/ 33 Spline Axles 1988-1993 GMC C1500 Sierra / Sierra SLX 1988-1999 GMC C1500 Sierra SLE $899.89 SALE VIEW PRICE IN CART |
 IN STOCK - DROPSHIPS YP MINSGM8.5-28Mini spools are a low-cost traction option for vehicles looking for full-time lockup.... Yukon Gear Mini Spool For GM 8.5in w/ 28 Spline Axles 1988-1990 GMC C1500 Sierra / Sierra SLE / Sierra SLX $164.89 SALE VIEW PRICE IN CART |
 IN STOCK - DROPSHIPS SL GM8.5-28USA Standard Spartan Locker For GM 8.5in w/ 28 Spline Axles / Incl. Heavy-Duty Cross Pin Shaft 1988-1990 GMC C1500 Sierra / Sierra SLE / Sierra SLX $582.89 SALE VIEW PRICE IN CART |
 IN STOCK - DROPSHIPS ZP MINSGM8.5-28USA Standard Mini Spool For GM 8.5in / 28 Spline 1988-1990 GMC C1500 Sierra / Sierra SLE / Sierra SLX $129.89 SALE VIEW PRICE IN CART |