View our Specials! Coupon Code: SaveIn2026
Looking for aftermarket parts to modify or upgrade your Pontiac Firebird with differentials? At Tunersports.com we carry a huge selection of the top name brand performance differential parts and accessories.
 IN STOCK - DROPSHIPS YC GM12P-DG-4This bare Dura Grip case features high-strength nodular iron construction and precision machining. It's ready to accept spider gears, clutches, and springs.... Yukon Gear Dura Grip For GM 12 Bolt Cars w/ 33 Spline Axles 1969-1969 Pontiac Firebird 350 / 350 HO / 400 / Sprint 1969-1972 Pontiac Firebird Base / Trans Am 1970-1972 Pontiac Firebird Esprit / Formula $436.89 |
 IN STOCK - LOW YDGGM12P-3-30-1Yukon 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 GM 12 Bolt Car w/ 30 Spline Axles / 3.08 To 3.90 Ratio 1969-1969 Pontiac Firebird 350 / 350 HO / 400 / Sprint 1969-1972 Pontiac Firebird Base / Trans Am 1970-1972 Pontiac Firebird Esprit / Formula $904.89 |
 OUT OF STOCK YDGGM12P-3-33-1Yukon 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 GM 12 Bolt Car w/ 33 Spline Axles / 3.08 To 3.90 Ratio 1969-1969 Pontiac Firebird 350 / 350 HO / 400 / Sprint 1969-1972 Pontiac Firebird Base / Trans Am 1970-1972 Pontiac Firebird Esprit / Formula $970.89 |
 IN STOCK - LOW YDGGM12P-4-30-1Yukon 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 GM 12 Bolt Car w/ 30 Spline Axles / 4.10+ 1969-1969 Pontiac Firebird 350 / 350 HO / 400 / Sprint 1969-1972 Pontiac Firebird Base / Trans Am 1970-1972 Pontiac Firebird Esprit / Formula $934.89 |
 IN STOCK - DROPSHIPS YDGGM12P-4-33-1Yukon 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 GM 12 Bolt Car w/ 33 Spline Axles / 4.10+ 1969-1969 Pontiac Firebird 350 / 350 HO / 400 / Sprint 1969-1972 Pontiac Firebird Base / Trans Am 1970-1972 Pontiac Firebird Esprit / Formula $952.89 |
 OUT OF STOCK YDGGM7.5-3-26-SMYukon 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 GM 7.5in & 7.625in w/ 26 Spline Axles / 3.23+ 1977-1981 Pontiac Firebird Esprit / Formula 1977-1989 Pontiac Firebird Base / Trans Am 1982-1986 Pontiac Firebird S/E 1989-1989 Pontiac Firebird Formula / Trans Am GTA / Trans Am GTA SE $846.89 |
 IN STOCK - LOW YDGGM7.5-3-28-SMYukon 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 GM 7.625in w/ 28 Spline Axles / 3.23+ 1977-1981 Pontiac Firebird Base / Esprit / Formula / Trans Am 1990-1992 Pontiac Firebird Trans Am GTA 1990-2002 Pontiac Firebird Base / Formula / Trans Am 1994-1994 Pontiac Firebird Trans Am GT $910.89 |
 IN STOCK - DROPSHIPS YDGGM8.2BOP-3-28-1Yukon 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 Duragrip Posi For 8.2in Buicks / Olds & Pontiac w/ 28 Spline Axles 1967-1967 Pontiac Firebird 326 1967-1968 Pontiac Firebird HO 1967-1969 Pontiac Firebird 400 / Sprint 1967-1972 Pontiac Firebird Base 1968-1969 Pontiac Firebird 350 1969-1969 Pontiac Firebird 350 HO 1969-1972 Pontiac Firebird Trans Am 1970-1972 Pontiac Firebird Esprit / Formula $1,029.89 |
 OUT OF STOCK YGK2359Yukon Gear & Axle(R) provides the highest quality aftermarket drivetrain parts in the industry. Yukon products are produced using superior materials and built to tolerances that exceed OE specifications. We do drivetrain right! Yukon manufactures high performance ring and pinions, positractions, loc... Yukon 64-72 Pontiac GTO Limited Slip & Re-Gear Kit 8.2in BOP 27 Spline 3.36 ratio 1967-1967 Pontiac Firebird 326 1967-1968 Pontiac Firebird HO 1967-1969 Pontiac Firebird 400 / Sprint 1967-1972 Pontiac Firebird Base 1968-1969 Pontiac Firebird 350 1969-1969 Pontiac Firebird 350 HO 1969-1972 Pontiac Firebird Trans Am 1970-1972 Pontiac Firebird Esprit / Formula $1,385.89 |
 IN STOCK - DROPSHIPS YP MINSGM12-30Yukon mini spools provide the traction of a full spool at an economical cost.... Yukon Gear Mini Spool For GM 12 Bolt Car & Truck w/ 30 Spline Axles 1969-1969 Pontiac Firebird 350 / 350 HO / 400 / Sprint 1969-1972 Pontiac Firebird Base / Trans Am 1970-1972 Pontiac Firebird Esprit / Formula $277.89 |
 IN STOCK - DROPSHIPS YP MINSGM7.5-26Yukon mini spools provide the traction of a full spool at an economical cost.... Yukon Gear Mini Spool For GM 7.5in w/ 26 Spline Axles 1977-1981 Pontiac Firebird Esprit / Formula 1977-1989 Pontiac Firebird Base / Trans Am 1982-1986 Pontiac Firebird S/E 1989-1989 Pontiac Firebird Formula / Trans Am GTA / Trans Am GTA SE $333.89 |
 IN STOCK - DROPSHIPS YP MINSGM7.6-28Yukon performance parts provide top quality materials and design for heavy duty use.... Yukon Gear Mini Spool For GM 7.6in w/ 28 Spline Axles 1990-1992 Pontiac Firebird Trans Am GTA 1990-2002 Pontiac Firebird Base / Formula / Trans Am 1994-1994 Pontiac Firebird Trans Am GT $287.89 |
 IN STOCK - DROPSHIPS SL GM12-30USA Standard Spartan Locker For GM 12 Bolt Car & Truck w/ 30 Spline Axles 1969-1969 Pontiac Firebird 350 / 350 HO / 400 / Sprint 1969-1972 Pontiac Firebird Base / Trans Am 1970-1972 Pontiac Firebird Esprit / Formula $734.89 |
 IN STOCK - DROPSHIPS SL XP-GM12USA Standard Spartan Locker 12 Bolt GM Spartan Locker Cross Pin 1969-1969 Pontiac Firebird 350 / 350 HO / 400 / Sprint 1969-1972 Pontiac Firebird Base / Trans Am 1970-1972 Pontiac Firebird Esprit / Formula $56.89 |