Quaife QDF29B Mercedes ATB Helical Gear LSD
Info
- Brand Quaife
- SKU MLR.DBW
- MPN QDF29B
- Quaife Automatic Torque Biasing (ATB) limited slip differential
- Compatible with traction control and ABS systems
- Controlled power supply to driven wheels
- Direct replacement for factory diff
- Backed by a Quaife lifetime warranty
Suitable For:
- C215 CL55 AMG Kompressor
- C215 CL600 - modification needed
- C215 CL65 AMG
- W220 S65 AMG
- W220 S600 (A2203506614 final drive) - modification needed
- W220 S55 AMG Kompressor (push-in shafts)
- W220 S55 AMG Kompressor (bolt-in shafts) - modification needed
- W221 S65 AMG
- Push in shafts no modification required
- Bolt in shafts require modification (see picture)
The Quaife automatic torque biasing (ATB®) limited slip differential stands as the ultimate traction upgrade for any vehicle equipped with a standard factory open differential. Often imitated but never surpassed, the Quaife ATB® delivers enhanced performance, providing improved traction, handling, and braking in all driving conditions.
Trusted by road car enthusiasts and motorsport competitors alike, this precision-engineered British-made differential is a direct replacement for standard differentials and is compatible with a wide range of front, rear, and four-wheel-drive vehicles. Since its introduction in the 1980s, the Quaife ATB® has proven its durability and effectiveness in high-performance environments such as rallying, circuit racing, rallycross, and Time Attack. Enhance your vehicle's control and enjoy superior performance, whether on the track or the open road.
- Lifetime Warranty: The Quaife ATB® comes with a lifetime warranty for both motorsport and road use, ensuring long-lasting reliability.
- British Quality Manufacturing: Proudly made in Great Britain, the Quaife ATB® is produced to rigorous ISO9001-2008 standards for superior performance.
- Trusted by Leading OEMs: Chosen by top manufacturers like Ford, Lotus, BMW, and GM, with zero warranty replacements reported.
- Zero Maintenance Components: Gear-operated with no service parts to replace—ever, ensuring hassle-free ownership.
- Reduces Torque Steer & Improves Handling: Dramatically minimizes unwanted torque steer, understeer, and oversteer for a smoother driving experience.
- Seamless Compatibility: Designed to work flawlessly with modern electronic stability and traction control systems in road cars.
- Enhanced Braking for FWD Vehicles: Improves braking performance on front-wheel-drive cars by reducing lock-up and minimizing ABS intrusion through efficient torque transfer.
- Safe and Smooth Operation: The Quaife ATB® delivers progressive, seamless action without ever fully locking, ensuring safe and controlled driving.
- Direct Replacement: A straightforward, direct swap for the factory ‘open’ differential unit, with no modifications required.
- Compatible with Standard Lubrication: Retains your vehicle's standard axle lubrication system and maintenance schedule.
- Proven Performance: With over 100,000 units sold globally since the 1980s, the Quaife ATB® is a trusted solution for improving vehicle traction and control.
- There are no special parts required to install a Quaife ATB Differential, beyond what may normally be needed to install a stock unit. The basic parts needed will be differential bearings, transmission or rear end gaskets and possibly some shims if required.
- When running a Quaife ATB Differential in a standard transaxle gearbox, we recommend you use the oil recommended by your vehicle’s manufacturer – the Quaife ATB Differential does not require any special lubricants
- Torque-biasing helical gear limited slip differential - not a plate type, viscous coupling or clutch pack differential. Quaife does not specify torque bias ratio details. The Quaife ATB differential is an all-helical gear design. The angle and tooth form of the helix used, the number of pinions used and many other factors, (including the individual vehicle application in question), all contribute to how the differential behaves and biases torque across an axle
- All of Quaife’s products are precision manufactured from certified steel billets and inspected to ISO9001-2008 standards in Britain
- Includes assembled differential unit only. Bearings, gears, gaskets/seals etc are not included