Nitro Gear & Axle TORS-D30-4 Helix Helical Gear Limited Slip Differential Front 3.73 and Up Ratio 27 Spline for Dana 30

The Nitro Helical Worm Gear is a torque-sensitive mechanical limited-slip differential that uses worm gears and spur gears to dispense and distinguish input power between two drive wheels or front and back axles. This is a completely separate design from the common beveled spider gear designs seen in most of the automotive industry.Just like any LSD, the Nitro Helical Worm Gear functions as a standard or open differential under normal driving conditions, allowing one wheel to spin faster or slower as necessary. When a wheel experiences a loss of traction, the gear separation forces start to take effect and distributes the torque to the high-traction wheel by increasing the helical-shaped gears mesh force until wheel spin is reduced or entirely stopped. Once the vehicle exits the low traction condition, the differential resumes normal operation.What's nice about the operation of a Nitro Helical Worm Gear LSD, is its characteristics; smooth, quiet and automatic. This LSD will engage without any driver awareness or require any action. It also has no wearable components and requires no maintenance, producing less time on the rack and more on the road.Features:Helix Helical Gear Limited Slip Differential Front 3.73 and Up Ratio 27 Spline for Dana 30Differential: Dana 30 FrontGear Ratio: 3.73-UpAxle Splines: 27Ring Gear Bolts: 12 (not included)Warranty: 1 YearFits:1966-1971 Ford Bronco1971-1983 Jeep CJ51970-1975 Jeep CJ61976-1986 Jeep CJ71982-1986 Jeep CJ8 Scrambler1986-1992 Jeep Comanche MJ1984-2001 Jeep Cherokee XJ1993-1998 Jeep Grand Cherokee ZJ1999-2004 Jeep Grand Cherokee WJ1987-1995 Jeep Wrangler YJ1997-2006 Jeep Wrangler TJ2004-2006 Jeep Wrangler Unlimited LJ2007-2018 Jeep Wrangler JK2007-2018 Jeep Wrangler Unlimited JKU1967-1970 International Scout1971-1977 International Scout II