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When you're looking to put more power to the ground, upgrading your vehicle's differential is a critical step. Auburn Gear’s Grip-N-Loc limited slip differentials are designed to deliver dependable traction and increased torque distribution for performance cars, trucks, muscle cars, and street rods. Made in Auburn, Indiana, Grip-N-Loc differentials combine American craftsmanship with cutting-edge design to provide drivers with unmatched strength, reliability, and road control.
Whether you are rebuilding a classic GM 12-bolt rear end or seeking more bite out of corners in your Dana 44-equipped truck, Grip-N-Loc delivers exactly what performance builders and everyday drivers need.
What Is a Limited Slip Differential?
A limited slip differential (LSD) is a type of gear system installed in a vehicle’s rear end to help control how torque is split between the two drive wheels. In a standard open differential, one wheel can spin freely if it loses traction. This becomes a problem in performance or low-grip conditions.
With a limited slip differential like the Auburn Gear Grip-N-Loc, torque is distributed to the wheel with more traction. This improves acceleration, cornering, and overall control in both street and race environments.
Inside the Grip-N-Loc: What Makes It Different
The Auburn Gear Grip-N-Loc is far from your average LSD. It is engineered for serious performance with several standout features:
- Military-grade case material that is up to 50 percent stronger than stock
- Cone-clutch design that increases the torque bias ratio up to 5.0:1 (compared to factory LSDs at about 2.0:1)
- Heat-treated SAE 4320 hardened steel gears
- 4-pinion gear setup on select models
- ISO 9001:2015 certified for quality and consistency
- 2-year limited warranty
This combination of strength, traction control, and long-term durability makes the Grip-N-Loc a favorite for both rebuilders and performance enthusiasts alike.
GM 12-Bolt Grip-N-Loc: Built for 1965–1972 Muscle Cars
The Auburn Gear 546033 Grip-N-Loc Differential is specially designed for 1965–1972 GM 12-bolt passenger cars. Compatible with 30-spline axles and 3.07 to 3.73 gear ratios (Series 3), this model is ideal for Chevelle, GTO, Cutlass, and similar builds.
With a case design that is up to 50 percent stronger than stock, this differential is race-ready while still perfectly suited for daily driving. The hardened steel gears, cone-clutch technology, and included limited-slip additive make installation and break-in straightforward for builders and shops.
Versatility Across Classic and Modern Applications
Grip-N-Loc differentials are not just for GM 12-bolt applications. Auburn Gear offers models for a wide variety of domestic platforms, including:
- Dana 44 applications with 19- or 30-spline axles
- AMC 20 and BOP 8.2 inch differentials
- Chrysler 8.25, 8.75, and other common Mopar setups
- Corvette 10-bolt rear ends
- Ford 8 inch, 8.8 inch, and 9 inch
- GM 7.5, 8.2, 8.4, 8.5, and 8.6 inch differentials
- And more
Each unit includes the Grip-N-Loc additive and is built with hardened steel internals for increased longevity under demanding conditions.
Why Rebuilders and Racers Trust Auburn Gear
From street cruisers to weekend warriors, car builders choose Auburn Gear Grip-N-Loc for three main reasons: American-made strength, consistent torque transfer, and proven engineering. With over 60 years of differential expertise, Auburn Gear backs its products with a strong warranty and technical support.
Their performance differentials are trusted by performance shops and used in countless high-power builds. When traction matters, Grip-N-Loc delivers.
Order Your Auburn Gear Differential from JEGS
JEGS is proud to offer the full line of Auburn Gear Grip-N-Loc differentials with free ground shipping for orders over $199, competitive pricing, and expert customer support. Whether you're upgrading your 1970 Chevelle’s rear end or need better traction in your Dana 44-equipped Jeep, JEGS has the right unit in stock!
Explore the full collection of Auburn Gear Grip-N-Loc differentials now at JEGS.com or call our team of performance experts at 1-800-345-4545 to find the perfect fit for your build.
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