Eaton Detroit Truetrac Differential 27 Spline 1.15in Axle — Fits 1970-1993 Volvo Dana 30

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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Eaton

Eaton engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Eaton lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Precision Traction for Your Volvo

The Eaton Detroit Truetrac is the gold standard for limited-slip differentials, now available for your classic Volvo. By utilizing a unique helical-gear design, the Truetrac provides instant torque biasing to the wheel with the most traction, significantly improving cornering stability and acceleration in adverse weather conditions.

Key Features

  • Spline Count: 27 Spline
  • Axle Shaft Diameter: 1.15-inch
  • Compatibility: Dana 30 Axles
  • Gear Ratio: 3.73 and up
  • Reliability: Maintenance-free, no clutches

Whether you are restoring a classic Volvo 140 series or upgrading a 240, this differential provides the perfect balance of performance and reliability. Because it operates automatically without the need for clutches or cones, it remains quiet and smooth during daily driving while providing the necessary bite when you push your vehicle harder. It is the ideal solution for those who want to enhance the driving dynamics of their vintage Volvo without sacrificing comfort. Discover why enthusiasts trust the Truetrac for their drivetrain needs. Find all your essential performance parts at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1970-1974 Volvo 142 Base
1970-1974 Volvo 142 S
1971-1972 Volvo 142 E
1974 Volvo 142 GL
1970-1974 Volvo 144 Base
1970-1974 Volvo 144 S
1974 Volvo 144 GL
1970-1972 Volvo 164 Base
1970-1974 Volvo 164 S
1973-1974 Volvo 164 E
1975 Volvo 164 Base
1990 Volvo 240 DL
1991 Volvo 240 SE
1992 Volvo 240 GL
1975 Volvo 242 GL
1976-1979 Volvo 242 Base
1980-1984 Volvo 242 DL
1981 Volvo 242 GL
1981 Volvo 242 Turbo
1981-1984 Volvo 242 GLT
1975-1978 Volvo 245 Base
1981-1983 Volvo 245 GLT
1982-1983 Volvo 245 GL
1984-1985 Volvo 245 Base
1986-1989 Volvo 245 DL
1986-1989 Volvo 245 GL
1976 Volvo 265 Base
1977-1979 Volvo 265 GL
1980-1981 Volvo 265 GLE

Product Details

Product Description
Part Numbers
Sizing & Fit

About Eaton

Eaton engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Eaton lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Precision Traction for Your Volvo

The Eaton Detroit Truetrac is the gold standard for limited-slip differentials, now available for your classic Volvo. By utilizing a unique helical-gear design, the Truetrac provides instant torque biasing to the wheel with the most traction, significantly improving cornering stability and acceleration in adverse weather conditions.

Key Features

  • Spline Count: 27 Spline
  • Axle Shaft Diameter: 1.15-inch
  • Compatibility: Dana 30 Axles
  • Gear Ratio: 3.73 and up
  • Reliability: Maintenance-free, no clutches

Whether you are restoring a classic Volvo 140 series or upgrading a 240, this differential provides the perfect balance of performance and reliability. Because it operates automatically without the need for clutches or cones, it remains quiet and smooth during daily driving while providing the necessary bite when you push your vehicle harder. It is the ideal solution for those who want to enhance the driving dynamics of their vintage Volvo without sacrificing comfort. Discover why enthusiasts trust the Truetrac for their drivetrain needs. Find all your essential performance parts at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1970-1974 Volvo 142 Base
1970-1974 Volvo 142 S
1971-1972 Volvo 142 E
1974 Volvo 142 GL
1970-1974 Volvo 144 Base
1970-1974 Volvo 144 S
1974 Volvo 144 GL
1970-1972 Volvo 164 Base
1970-1974 Volvo 164 S
1973-1974 Volvo 164 E
1975 Volvo 164 Base
1990 Volvo 240 DL
1991 Volvo 240 SE
1992 Volvo 240 GL
1975 Volvo 242 GL
1976-1979 Volvo 242 Base
1980-1984 Volvo 242 DL
1981 Volvo 242 GL
1981 Volvo 242 Turbo
1981-1984 Volvo 242 GLT
1975-1978 Volvo 245 Base
1981-1983 Volvo 245 GLT
1982-1983 Volvo 245 GL
1984-1985 Volvo 245 Base
1986-1989 Volvo 245 DL
1986-1989 Volvo 245 GL
1976 Volvo 265 Base
1977-1979 Volvo 265 GL
1980-1981 Volvo 265 GLE

Product Details

Product Description

About Eaton

Eaton engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Eaton lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Precision Traction for Your Volvo

The Eaton Detroit Truetrac is the gold standard for limited-slip differentials, now available for your classic Volvo. By utilizing a unique helical-gear design, the Truetrac provides instant torque biasing to the wheel with the most traction, significantly improving cornering stability and acceleration in adverse weather conditions.

Key Features

  • Spline Count: 27 Spline
  • Axle Shaft Diameter: 1.15-inch
  • Compatibility: Dana 30 Axles
  • Gear Ratio: 3.73 and up
  • Reliability: Maintenance-free, no clutches

Whether you are restoring a classic Volvo 140 series or upgrading a 240, this differential provides the perfect balance of performance and reliability. Because it operates automatically without the need for clutches or cones, it remains quiet and smooth during daily driving while providing the necessary bite when you push your vehicle harder. It is the ideal solution for those who want to enhance the driving dynamics of their vintage Volvo without sacrificing comfort. Discover why enthusiasts trust the Truetrac for their drivetrain needs. Find all your essential performance parts at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1970-1974 Volvo 142 Base
1970-1974 Volvo 142 S
1971-1972 Volvo 142 E
1974 Volvo 142 GL
1970-1974 Volvo 144 Base
1970-1974 Volvo 144 S
1974 Volvo 144 GL
1970-1972 Volvo 164 Base
1970-1974 Volvo 164 S
1973-1974 Volvo 164 E
1975 Volvo 164 Base
1990 Volvo 240 DL
1991 Volvo 240 SE
1992 Volvo 240 GL
1975 Volvo 242 GL
1976-1979 Volvo 242 Base
1980-1984 Volvo 242 DL
1981 Volvo 242 GL
1981 Volvo 242 Turbo
1981-1984 Volvo 242 GLT
1975-1978 Volvo 245 Base
1981-1983 Volvo 245 GLT
1982-1983 Volvo 245 GL
1984-1985 Volvo 245 Base
1986-1989 Volvo 245 DL
1986-1989 Volvo 245 GL
1976 Volvo 265 Base
1977-1979 Volvo 265 GL
1980-1981 Volvo 265 GLE

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