Eaton Detroit Truetrac Differential, 30-Spline, Rear 8-Inch, Part Number 913A611

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. Detroit Truetrac® Differential; 30 Spline; 1.31 in. Axle Shaft Diameter; Rear 8 in.;

• Optimized Torque Bias Ratios Deliver Max Acceleration And Handling
• No Special Lubrication Or Friction Modifiers Needed
• Helical Gear Limited Slip Differential
• Durable; Smooth; Quiet Operation
• Works In Forward And Reverse
• Ideal For Most Vehicles
• Automatic Engagement

The Eaton Detroit Truetrac differential is a helical-gear limited-slip differential designed to improve traction, acceleration, and handling. Its automatic operation helps transfer torque to the wheel with the most available grip, providing smoother and more predictable performance in a wide range of driving conditions. The maintenance-free design operates in both forward and reverse without requiring special driver input.

Built for rear 8-inch applications, the Eaton Detroit Truetrac features a 30-spline configuration and supports axle shafts with an approximately 1.30-inch diameter. Its helical gear design delivers quiet, smooth operation while maintaining durable performance for street-driven vehicles, performance applications, and other compatible vehicles requiring improved traction. No special lubricant or friction modifier is required, simplifying installation and ongoing maintenance.

This Eaton Detroit Truetrac differential fits select 1988-1995 Toyota 4Runner and Toyota Pickup applications. Confirm axle configuration, spline count, and vehicle-specific compatibility before ordering. The package includes one Eaton Detroit Truetrac limited-slip differential assembly. Installation should be performed by a qualified technician using the vehicle manufacturer’s service procedures and appropriate differential lubricant.

Key Product Specifications & Technical Data

• Brand: Eaton
• Part Number: 913A611
• Product Type: Helical-gear limited-slip differential
• Application: Rear 8-inch axle
• Spline Count: 30 spline
• Axle Shaft Diameter: Approximately 1.30 inches
• Operating Direction: Forward and reverse
• Lubrication Requirement: No special lubricant or friction modifier required

What's Included

• One Eaton Detroit Truetrac limited-slip differential assembly

Fitment

Fits select 1988-1995 Toyota 4Runner and 1989-1995 Toyota Pickup models. Verify exact year, axle, spline, and differential specifications before installation.

Features:

• Optimized torque-bias ratios improve acceleration and handling by directing torque toward the wheel with greater traction.
• Automatic engagement provides smooth, maintenance-free limited-slip operation without driver input.
• Helical gear design delivers quiet, durable performance in forward and reverse.
• No special lubrication or friction modifiers are required, simplifying service and installation.

Fitments:
1974 Toyota Celica Base
1974 Toyota Celica GT
1974 Toyota Celica LT
1974 Toyota Celica ST
1974 Toyota Hi-Lux Base
1975 Toyota Celica GT
1975 Toyota Celica ST
1976 Toyota Celica GT
1976 Toyota Celica ST
1977 Toyota Celica GT
1977 Toyota Celica ST
1978 Toyota Celica GT
1978 Toyota Celica ST
1979 Toyota Celica GT
1979 Toyota Celica ST
1979 Toyota Celica Supra
1980 Toyota Celica GT
1980 Toyota Celica ST
1980 Toyota Celica Supra
1981 Toyota Celica GT
1981 Toyota Celica ST
1981 Toyota Celica Supra
1982 Toyota Celica GT
1982 Toyota Celica ST
1982 Toyota Celica Supra
1983 Toyota Celica GT
1983 Toyota Celica GTS
1983 Toyota Celica ST
1983 Toyota Celica Supra
1984 Toyota 4Runner DLX
1984 Toyota 4Runner SR5
1984 Toyota Celica GT
1984 Toyota Celica GTS
1984 Toyota Celica ST
1984 Toyota Celica Supra
1985 Toyota 4Runner DLX
1985 Toyota 4Runner SR5
1985 Toyota Celica GT
1985 Toyota Celica GTS
1985 Toyota Celica ST
1985 Toyota Celica Supra
1986 Toyota 4Runner DLX
1986 Toyota 4Runner SR5
1986 Toyota Celica GT
1986 Toyota Celica GTS
1986 Toyota Celica ST
1986 Toyota Celica Supra
1986 Toyota Pickup Base
1986 Toyota Pickup DLX
1986 Toyota Pickup SR5
1987 Toyota 4Runner DLX
1987 Toyota 4Runner SR5
1987 Toyota Celica GT
1987 Toyota Celica GTS
1987 Toyota Celica ST
1987 Toyota Pickup Base
1987 Toyota Pickup DLX
1987 Toyota Pickup SR5
1988 Toyota 4Runner DLX
1988 Toyota 4Runner SR5
1988 Toyota Celica All Trac
1988 Toyota Celica GT
1988 Toyota Celica GTS
1988 Toyota Celica ST
1988 Toyota Pickup Base
1988 Toyota Pickup DLX
1988 Toyota Pickup SR5
1989 Toyota 4Runner DLX
1989 Toyota 4Runner SR5
1989 Toyota Celica All Trac
1989 Toyota Celica GT
1989 Toyota Celica GTS
1989 Toyota Celica ST
1989 Toyota Pickup Base
1989 Toyota Pickup DLX
1989 Toyota Pickup SR5
1990 Toyota 4Runner SR5
1990 Toyota Celica All Trac
1990 Toyota Celica GT
1990 Toyota Celica GTS
1990 Toyota Celica ST
1990 Toyota Pickup Base
1990 Toyota Pickup DLX
1990 Toyota Pickup SR5
1991 Toyota 4Runner SR5
1991 Toyota Celica All Trac
1991 Toyota Celica GT
1991 Toyota Celica GTS
1991 Toyota Celica ST
1991 Toyota Pickup Base
1991 Toyota Pickup DLX
1992 Toyota 4Runner SR5
1992 Toyota Celica All Trac
1992 Toyota Celica GT
1992 Toyota Celica GTS
1992 Toyota Celica ST
1992 Toyota Pickup Base
1992 Toyota Pickup DLX
1993 Toyota 4Runner SR5
1993 Toyota Celica GT
1993 Toyota Celica GTS
1993 Toyota Celica GTS All Trac
1993 Toyota Celica ST
1993 Toyota Pickup Base
1993 Toyota Pickup DLX
1994 Toyota 4Runner SR5
1994 Toyota Celica GT
1994 Toyota Celica ST
1994 Toyota Pickup Base
1994 Toyota Pickup DLX
1995 Toyota 4Runner SR5
1995 Toyota Celica GT
1995 Toyota Celica ST
1995 Toyota Pickup Base
1995 Toyota Pickup DLX
1995 Toyota T100 Base
1995 Toyota Tacoma Base
1996 Toyota 4Runner Base
1996 Toyota 4Runner Limited
1996 Toyota 4Runner SR5
1996 Toyota Celica GT
1996 Toyota Celica ST
1996 Toyota T100 Base
1996 Toyota Tacoma Base

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Unknown
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Clearance Item: t
Units Per Sku: 1