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1989 Pontiac Firebird Differential - Rear Eaton

28 Spline; 1.20 in. Axle Shaft Diameter; 3.23 And Up Ring Gear Pinion Ratio; 7.5 in./7.625 in.
Detroit Truetrac® Differential; 28 Spline; 1.20 in. Axle Shaft Diameter; 3.23 And Up Ring Gear Pinion Ratio; Rear; 7.5 in./7.625 in.;
Detroit Truetrac® Differential
Features:
- Helical Gear Limited Slip Differential
- Optimized Torque Bias Ratios Deliver Max Acceleration And Handling
- Automatic Engagement
- Works In Forward And Reverse
- Ideal For Most Vehicles
- Durable
- Smooth
- Quiet Operation
- No Special Lubrication Or Friction Modifiers Needed
The Detroit Truetrac is a helical-gear style, limited-slip differential that maximizes wheel traction and enhances driving characteristics. Maintenance-free, it features smooth, automatic operation in forward and reverse. Its versatility makes Detroit Truetrac the ideal traction solution for almost any type of vehicle.

Additional Fitment Information:

Vehicle	Position
1989 - Pontiac Firebird	Rear

1 In Stock

Limited-Time Offer

$1,104.14 USD

$1,324.97 USD

1989 Pontiac Firebird Differential - Rear 6 Cyl 3.8L Eaton

28 Spline; 1.20 in. Axle Shaft Diameter; 2.73 And Up Ring Gear Pinion Ratio; 8.5 in. GM 8.5/8.6 in. Eaton Differentials Require Special Bearings~Axles w/Small Bearing Bores OD 2.89 in. Req. PN[LM-102949/LM-102911]~Axles w/Large Bearing Bores OD 3.06 in. Req. PN[LM603049/LM603012]
Detroit Truetrac® Differential; 28 Spline; 1.20 in. Axle Shaft Diameter; 2.73 And Up Ring Gear Pinion Ratio; Rear; 8.5 in.;
Detroit Truetrac® Differential
Features:
- Helical Gear Limited Slip Differential
- Optimized Torque Bias Ratios Deliver Max Acceleration And Handling
- Automatic Engagement
- Works In Forward And Reverse
- Ideal For Most Vehicles
- Durable
- Smooth
- Quiet Operation
- No Special Lubrication Or Friction Modifiers Needed
The Detroit Truetrac is a helical-gear style, limited-slip differential that maximizes wheel traction and enhances driving characteristics. Maintenance-free, it features smooth, automatic operation in forward and reverse. Its versatility makes Detroit Truetrac the ideal traction solution for almost any type of vehicle.

Additional Fitment Information:

Vehicle	Block	CC	Position	Engine	CID
1989 - Pontiac Firebird	V	3800	Rear	6 Cyl 3.8L	231

2 In Stock

Limited-Time Offer

$1,196.86 USD

$1,436.23 USD

1989 Pontiac Firebird Differential - Rear 6 Cyl 2.8L Eaton

30 Spline; 1.32 in. Axle Shaft Diameter; 2.73 And Up Ring Gear Pinion Ratio; Rear 8.5 in./8.6 in. GM 8.5/8.6 in. Eaton Differentials Require Special Bearings~Axles w/Small Bearing Bores OD 2.89 in. Req. PN[LM-102949/LM-102911]~Axles w/Large Bearing Bores OD 3.06 in. Req. PN[LM603049/LM603012]
Detroit Truetrac® Differential; 30 Spline; 1.32 in. Axle Shaft Diameter; 2.73 And Up Ring Gear Pinion Ratio; Rear 8.5 in./8.6 in.;
Detroit Truetrac® Differential
Features:
- Helical Gear Limited Slip Differential
- Optimized Torque Bias Ratios Deliver Max Acceleration And Handling
- Automatic Engagement
- Works In Forward And Reverse
- Ideal For Most Vehicles
- Durable
- Smooth
- Quiet Operation
- No Special Lubrication Or Friction Modifiers Needed
The Detroit Truetrac is a helical-gear style, limited-slip differential that maximizes wheel traction and enhances driving characteristics. Maintenance-free, it features smooth, automatic operation in forward and reverse. Its versatility makes Detroit Truetrac the ideal traction solution for almost any type of vehicle.