ATB Helical Limited Slip Differential

The Quaife QDF13L is an Automatic Torque Biasing (ATB) Helical Limited Slip Differential specifically designed as a viscous replacement for the factory differential in Nissan 350Z manual transmission vehicles. This precision-engineered unit from Quaife offers a significant upgrade in traction and handling balance. Manufactured in Great Britain to ISO9001-2008 standards, the Quaife ATB differential is built for durability and performance. It operates using a gear-driven system with no service components required, ensuring long-term reliability. The design works seamlessly with road car electronic stability and traction control programs, while also improving braking performance by reducing lock-up and ABS intrusion. It is backed by a lifetime warranty for both motorsport and road use. As a direct replacement for the standard factory 'open' differential, the QDF13L retains normal axle lubrication systems and maintenance schedules, making installation straightforward. The differential aims to greatly reduce unwanted torque steer, understeer, and oversteer, providing a safer, more progressive, and seamless driving experience without ever fully locking. Over 100,000 units have been sold worldwide since the 1980s.