Eaton Detroit Locker Differential 30 Spline 3.73+ Ratio — Fits Chevrolet C10/K10

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SKU: EAT187C150A
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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

Unmatched Traction with Eaton Detroit Locker

The Eaton Detroit Locker is the industry standard for automatic locking differentials. Designed for those who demand ultimate traction in both mild and extreme conditions, this unit ensures that power is delivered to both rear wheels, even if one loses contact with the ground. Whether you are off-roading, drag racing, or just need reliable traction on the street, the Detroit Locker is the bullet-proof solution.

Key Features

  • Operation: 100% automatic locking
  • Spline Count: 30 Spline
  • Axle Shaft Diameter: 1.30 inch
  • Gear Ratio: 3.73 and numerically higher
  • Compatibility: Rear 8.875 inch axles
  • Durability: Maintenance-free, high-strength design

This differential works seamlessly in both forward and reverse, providing a consistent driving experience without the need for manual engagement. Its unique design keeps both wheels in drive mode, making it an essential upgrade for Chevrolet C10 and K10 trucks. By eliminating wheel spin, you gain better acceleration and improved control in challenging environments. The Detroit Locker is engineered to withstand high torque loads, making it a favorite for performance enthusiasts and off-roaders alike. With its maintenance-free construction, you can spend more time driving and less time wrenching. Upgrade your drivetrain with the best in the business at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1969-1974 Chevrolet Blazer Base
1975-1980 Chevrolet C10 Custom Deluxe
1975-1981 Chevrolet C10 Cheyenne
1975-1982 Chevrolet C10 Scottsdale
1975-1982 Chevrolet C10 Silverado
1978-1980 Chevrolet C10 Big Ten
1981 Chevrolet C10 Deluxe
1981-1982 Chevrolet C10 Custom
1965-1967 Chevrolet C10 Panel Base
1964-1974 Chevrolet C10 Pickup Base
1967-1974 Chevrolet C10 Suburban Base
1975-1980 Chevrolet C10 Suburban Custom Deluxe
1975-1980 Chevrolet C10 Suburban Scottsdale
1975-1980 Chevrolet C10 Suburban Silverado
1981 Chevrolet C10 Suburban Deluxe
1981-1982 Chevrolet C10 Suburban Custom
1982 Chevrolet C10 Suburban Scottsdale
1982 Chevrolet C10 Suburban Silverado
1975-1981 Chevrolet G10 Beauville
1975-1981 Chevrolet G10 Chevy Van
1975-1981 Chevrolet G10 Sportvan
1981 Chevrolet G10 Bonaventure
1964-1967 Chevrolet G10 Van Base
1968-1974 Chevrolet G10 Van Sportvan
1969-1974 Chevrolet G10 Van Base
1975-1980 Chevrolet K10 Custom Deluxe
1975-1981 Chevrolet K10 Cheyenne
1975-1981 Chevrolet K10 Scottsdale
1975-1981 Chevrolet K10 Silverado
1981 Chevrolet K10 Custom
1981 Chevrolet K10 Deluxe
1964-1974 Chevrolet K10 Pickup Base
1967-1974 Chevrolet K10 Suburban Base
1975-1977 Chevrolet K10 Suburban Silverado
1975-1980 Chevrolet K10 Suburban Custom Deluxe
1975-1980 Chevrolet K10 Suburban Scottsdale
1979-1980 Chevrolet K10 Suburban Silverado
1981 Chevrolet K10 Suburban Deluxe
1981-1982 Chevrolet K10 Suburban Custom
1982 Chevrolet K10 Suburban Silverado
1982 Chevrolet K10 Suburban Scottsdale
1975 Chevrolet K5 Blazer Custom Deluxe
1975-1980 Chevrolet K5 Blazer Cheyenne
1976 Chevrolet K5 Blazer Base
1977-1980 Chevrolet K5 Blazer Custom Deluxe
1978 Chevrolet K5 Blazer Silverado
1980-1981 Chevrolet K5 Blazer Silverado
1981 Chevrolet K5 Blazer Deluxe
1981 Chevrolet K5 Blazer Custom
1965-1966 Chevrolet Suburban Base
1975-1978 GMC C15 High Sierra
1975-1978 GMC C15 Sierra Classic
1975-1978 GMC C15 Sierra Grande
1975-1978 GMC C15 Base
1977 GMC C15 Indy Hauler
1977-1978 GMC C15 Heavy Half
1978 GMC C15 Street Coupe
1975-1978 GMC C15 Suburban Sierra Classic
1975-1978 GMC C15 Suburban Sierra Grande
1975-1978 GMC C15 Suburban Base

…and 49 additional fitments. Contact us to confirm yours.

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

Unmatched Traction with Eaton Detroit Locker

The Eaton Detroit Locker is the industry standard for automatic locking differentials. Designed for those who demand ultimate traction in both mild and extreme conditions, this unit ensures that power is delivered to both rear wheels, even if one loses contact with the ground. Whether you are off-roading, drag racing, or just need reliable traction on the street, the Detroit Locker is the bullet-proof solution.

Key Features

  • Operation: 100% automatic locking
  • Spline Count: 30 Spline
  • Axle Shaft Diameter: 1.30 inch
  • Gear Ratio: 3.73 and numerically higher
  • Compatibility: Rear 8.875 inch axles
  • Durability: Maintenance-free, high-strength design

This differential works seamlessly in both forward and reverse, providing a consistent driving experience without the need for manual engagement. Its unique design keeps both wheels in drive mode, making it an essential upgrade for Chevrolet C10 and K10 trucks. By eliminating wheel spin, you gain better acceleration and improved control in challenging environments. The Detroit Locker is engineered to withstand high torque loads, making it a favorite for performance enthusiasts and off-roaders alike. With its maintenance-free construction, you can spend more time driving and less time wrenching. Upgrade your drivetrain with the best in the business at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1969-1974 Chevrolet Blazer Base
1975-1980 Chevrolet C10 Custom Deluxe
1975-1981 Chevrolet C10 Cheyenne
1975-1982 Chevrolet C10 Scottsdale
1975-1982 Chevrolet C10 Silverado
1978-1980 Chevrolet C10 Big Ten
1981 Chevrolet C10 Deluxe
1981-1982 Chevrolet C10 Custom
1965-1967 Chevrolet C10 Panel Base
1964-1974 Chevrolet C10 Pickup Base
1967-1974 Chevrolet C10 Suburban Base
1975-1980 Chevrolet C10 Suburban Custom Deluxe
1975-1980 Chevrolet C10 Suburban Scottsdale
1975-1980 Chevrolet C10 Suburban Silverado
1981 Chevrolet C10 Suburban Deluxe
1981-1982 Chevrolet C10 Suburban Custom
1982 Chevrolet C10 Suburban Scottsdale
1982 Chevrolet C10 Suburban Silverado
1975-1981 Chevrolet G10 Beauville
1975-1981 Chevrolet G10 Chevy Van
1975-1981 Chevrolet G10 Sportvan
1981 Chevrolet G10 Bonaventure
1964-1967 Chevrolet G10 Van Base
1968-1974 Chevrolet G10 Van Sportvan
1969-1974 Chevrolet G10 Van Base
1975-1980 Chevrolet K10 Custom Deluxe
1975-1981 Chevrolet K10 Cheyenne
1975-1981 Chevrolet K10 Scottsdale
1975-1981 Chevrolet K10 Silverado
1981 Chevrolet K10 Custom
1981 Chevrolet K10 Deluxe
1964-1974 Chevrolet K10 Pickup Base
1967-1974 Chevrolet K10 Suburban Base
1975-1977 Chevrolet K10 Suburban Silverado
1975-1980 Chevrolet K10 Suburban Custom Deluxe
1975-1980 Chevrolet K10 Suburban Scottsdale
1979-1980 Chevrolet K10 Suburban Silverado
1981 Chevrolet K10 Suburban Deluxe
1981-1982 Chevrolet K10 Suburban Custom
1982 Chevrolet K10 Suburban Silverado
1982 Chevrolet K10 Suburban Scottsdale
1975 Chevrolet K5 Blazer Custom Deluxe
1975-1980 Chevrolet K5 Blazer Cheyenne
1976 Chevrolet K5 Blazer Base
1977-1980 Chevrolet K5 Blazer Custom Deluxe
1978 Chevrolet K5 Blazer Silverado
1980-1981 Chevrolet K5 Blazer Silverado
1981 Chevrolet K5 Blazer Deluxe
1981 Chevrolet K5 Blazer Custom
1965-1966 Chevrolet Suburban Base
1975-1978 GMC C15 High Sierra
1975-1978 GMC C15 Sierra Classic
1975-1978 GMC C15 Sierra Grande
1975-1978 GMC C15 Base
1977 GMC C15 Indy Hauler
1977-1978 GMC C15 Heavy Half
1978 GMC C15 Street Coupe
1975-1978 GMC C15 Suburban Sierra Classic
1975-1978 GMC C15 Suburban Sierra Grande
1975-1978 GMC C15 Suburban Base

…and 49 additional fitments. Contact us to confirm yours.

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

Unmatched Traction with Eaton Detroit Locker

The Eaton Detroit Locker is the industry standard for automatic locking differentials. Designed for those who demand ultimate traction in both mild and extreme conditions, this unit ensures that power is delivered to both rear wheels, even if one loses contact with the ground. Whether you are off-roading, drag racing, or just need reliable traction on the street, the Detroit Locker is the bullet-proof solution.

Key Features

  • Operation: 100% automatic locking
  • Spline Count: 30 Spline
  • Axle Shaft Diameter: 1.30 inch
  • Gear Ratio: 3.73 and numerically higher
  • Compatibility: Rear 8.875 inch axles
  • Durability: Maintenance-free, high-strength design

This differential works seamlessly in both forward and reverse, providing a consistent driving experience without the need for manual engagement. Its unique design keeps both wheels in drive mode, making it an essential upgrade for Chevrolet C10 and K10 trucks. By eliminating wheel spin, you gain better acceleration and improved control in challenging environments. The Detroit Locker is engineered to withstand high torque loads, making it a favorite for performance enthusiasts and off-roaders alike. With its maintenance-free construction, you can spend more time driving and less time wrenching. Upgrade your drivetrain with the best in the business at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1969-1974 Chevrolet Blazer Base
1975-1980 Chevrolet C10 Custom Deluxe
1975-1981 Chevrolet C10 Cheyenne
1975-1982 Chevrolet C10 Scottsdale
1975-1982 Chevrolet C10 Silverado
1978-1980 Chevrolet C10 Big Ten
1981 Chevrolet C10 Deluxe
1981-1982 Chevrolet C10 Custom
1965-1967 Chevrolet C10 Panel Base
1964-1974 Chevrolet C10 Pickup Base
1967-1974 Chevrolet C10 Suburban Base
1975-1980 Chevrolet C10 Suburban Custom Deluxe
1975-1980 Chevrolet C10 Suburban Scottsdale
1975-1980 Chevrolet C10 Suburban Silverado
1981 Chevrolet C10 Suburban Deluxe
1981-1982 Chevrolet C10 Suburban Custom
1982 Chevrolet C10 Suburban Scottsdale
1982 Chevrolet C10 Suburban Silverado
1975-1981 Chevrolet G10 Beauville
1975-1981 Chevrolet G10 Chevy Van
1975-1981 Chevrolet G10 Sportvan
1981 Chevrolet G10 Bonaventure
1964-1967 Chevrolet G10 Van Base
1968-1974 Chevrolet G10 Van Sportvan
1969-1974 Chevrolet G10 Van Base
1975-1980 Chevrolet K10 Custom Deluxe
1975-1981 Chevrolet K10 Cheyenne
1975-1981 Chevrolet K10 Scottsdale
1975-1981 Chevrolet K10 Silverado
1981 Chevrolet K10 Custom
1981 Chevrolet K10 Deluxe
1964-1974 Chevrolet K10 Pickup Base
1967-1974 Chevrolet K10 Suburban Base
1975-1977 Chevrolet K10 Suburban Silverado
1975-1980 Chevrolet K10 Suburban Custom Deluxe
1975-1980 Chevrolet K10 Suburban Scottsdale
1979-1980 Chevrolet K10 Suburban Silverado
1981 Chevrolet K10 Suburban Deluxe
1981-1982 Chevrolet K10 Suburban Custom
1982 Chevrolet K10 Suburban Silverado
1982 Chevrolet K10 Suburban Scottsdale
1975 Chevrolet K5 Blazer Custom Deluxe
1975-1980 Chevrolet K5 Blazer Cheyenne
1976 Chevrolet K5 Blazer Base
1977-1980 Chevrolet K5 Blazer Custom Deluxe
1978 Chevrolet K5 Blazer Silverado
1980-1981 Chevrolet K5 Blazer Silverado
1981 Chevrolet K5 Blazer Deluxe
1981 Chevrolet K5 Blazer Custom
1965-1966 Chevrolet Suburban Base
1975-1978 GMC C15 High Sierra
1975-1978 GMC C15 Sierra Classic
1975-1978 GMC C15 Sierra Grande
1975-1978 GMC C15 Base
1977 GMC C15 Indy Hauler
1977-1978 GMC C15 Heavy Half
1978 GMC C15 Street Coupe
1975-1978 GMC C15 Suburban Sierra Classic
1975-1978 GMC C15 Suburban Sierra Grande
1975-1978 GMC C15 Suburban Base

…and 49 additional fitments. Contact us to confirm yours.

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