1999-2019 Chevy Silverado Detroit Locker / NoSPIN Heavy-duty automatic locking differential 8.5″ and 8.6″ GM 30 spline axles – 187C149A

Product Details

Detroit Locker / NoSPIN
Heavy-duty automatic locking differential

Eaton’s Detroit Locker, also known as a NoSPIN, is a fully automatic, positive-locking, traction differential.
NoSPIN products are designed to replace the internal gear set of the factory or open differential, while
Detroit Locker models are designed to replace the entire differential. Both the NoSPIN and Detroit Locker
operate identically as a locking differential, and are known around the world for premium performance,
dependable operation and unmatched durability. This differential is the culmination of more than 80
years of engineering for both original equipment and performance upgrade applications. NoSPIN is a proven
performer for light, medium and heavy-duty trucks, off-highway, agricultural, forestry, military, specialty

equipment vehicles, performance off-road, circle track racing and drag racing.
The Detroit Locker / NoSPIN maximizes traction by delivering 100 percent of the torque and power to both
drive wheels. It is engineered to keep both wheels in a constant drive mode, yet has the ability to automatically
“unlock” to permit necessary wheel speed differentiation when negotiating turns, maintaining
100 percent of the powertrain torque to the driving wheel. The Detroit Locker / NoSPIN is maintenance
free and doesn’t require special lubricants or service adjustments. Conventional differentials allow vehicles
to get stuck when they lose traction on one side. This superior product continues to drive your vehicle even
if one of the wheels is suspended in the air, or in the event of axle shaft failure.

• Fits 2.73 gear ratio and up
• Fits 8.5″ and 8.6″ GM 30 spline axles 

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