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Quaife ATB differential: FWD Ford Escort, Fiesta, Focus 1.4-1.8, Ka, Puma, ST150 (Type BC/IB5 gearbox) (QDF7Z) QUALSD3

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Quaife ATB differential: FWD Ford Escort, Fiesta, Focus 1.4-1.8, Ka, Puma, ST150 (Type BC/IB5 gearbox) (QDF7Z) QUALSD3
No Tax, Each £400.00 Taxed, Each £480.00
Available From Stock
Free UK Delivery Available
As a direct replacement for the standard, factory ‘open’ dif....


As a result of a special high volume deal between Burton Power and Quaife, selected genuine Quaife ATBs (including this one) are now available at a highly discounted price. This allows you the customer to benefit from owning a high quality genuine Quaife unit at a price close to the Chinese copies that are beginning to appear on the market. Why take a chance on a cheap copy when you can enjoy the real thing for only a fraction more?. For more details, click here.

The Quaife ATB - As a direct replacement for the standard, factory ‘open’ differential, Quaife’s ATB unit can transform the performance of your car. Unlike a conventional plate-style limited slip unit, these units rely on gears, rather than clutch plates for its operation. That means it’s much smoother in operation, because unlike a conventional plate-style LSD, it never locks harshly with a set pre-load of wheel slip across the driven axle. Rather, it automatically biases the torque away from the spinning wheel across the axle, to a constantly varying degree and never locks.

To the driver (especially of a front-wheel drive car), the results are significant performance improvements; superior, controllable traction without the harsh steering wheel snatch or torque steer that have long been associated with performance differentials. These traction benefits can also be utilized in rear wheel drive vehicles, while Quaife ATB units offer significant traction advantages fitted to the front of four wheel drive cars.

The Quaife ATB differential has been designed to use the standard transmission oils and is covered by a limited lifetime warranty for both road and competition use. This makes the Quaife ATB differential a true ‘fit and forget’ upgrade that offers compromise-free performance and reliability. Key features of the Quaife ATB helical gear limited slip differential include:

  • Safe, progressive and seamless in action, the Quaife ATB differential never ‘locks’
  • Controlled power is transmitted to all driven wheels, to maximise traction and minimise wheelspin, particularly in slippery conditions
  • Fitment eliminates unwanted torque steer, understeer or oversteer
  • Designed to work in harmony with road car OEM electronic stability programs
  • Improves braking performance by reducing lock ups and minimises ABS intrusion
  • Reduces tyre wear, especially on front wheel drive cars
  • Gear operated with no components to replace – ever
  • Direct replacement for factory standard ‘open’ differential unit
  • Retains normal axle lubrication systems and maintenance schedule
  • Over 250,000 units sold worldwide since the 1980s
  • Backed by the confidence of a Quaife limited lifetime warranty
  • Ford Escort MK3 1.1/1.3/1.6/1.6D 1980-1985
  • Ford Escort Mk3 1.6i/XR3i 1982-1985
  • Ford Escort Mk3 RS Turbo Series 1 1984-1985
  • Ford Escort Mk3 RS1600i 1981-1983
  • Ford Escort Mk3 XR3 1980-1982
  • Ford Escort Mk4 1.1/1.3/1.4/1.6/1.6D/1.8D 1986-1990
  • Ford Escort Mk4 1.6i/XR3i 1986-1990
  • Ford Escort Mk4 RS Turbo Series 2 1986-1990
  • Ford Escort Mk5/6 1.3/1.4/1.6 1990-2001
  • Ford Escort Mk5/6 1.6, 1.8 16v, XR3i (105PS) 1992-2001
  • Ford Fiesta Mk1 1.0/1.1 1976-1983
  • Ford Fiesta Mk1 1.3 Supersport 1980-1983
  • Ford Fiesta Mk1 1.6 XR2 1981-1983
  • Ford Fiesta Mk2 1.0/1.1/1.3/1.4/1.6D 1983-1989
  • Ford Fiesta Mk2 1.6 XR2 1983-1989
  • Ford Fiesta Mk3 1.0/1.1/1.3/1.4 & 1.6 1989-1995
  • Ford Fiesta Mk3 Si 1.6, XR2i & RS1800 1.8 16v 1992-1995
  • Ford Fiesta Mk3 XR2i 1.6 CVH 1989-1992
  • Ford Fiesta Mk3 RS Turbo 1990-1992
  • Ford Fiesta Mk4 1.25/1.3/1.4 1995-1999
  • Ford Fiesta Mk5 1.25/1.3/1.4/1.6 2000-2002
  • Ford Fiesta Mk6 1.25/1.3/1.4/1.6 2002-2008
  • Ford Fiesta Mk6 1.4D/1.6D 2002-2008
  • Ford Fiesta Mk6 ST150 2.0 2005-2008
  • Ford Fiesta Mk7 (not ST180) 2008-2017
  • Ford Focus Mk1 1.4/1.6/1.8 1998-2005
  • Ford Focus Mk2 1.4/1.6/1.8 2005-2011
  • Ford Focus Mk3 1.0/1.6 2011-
  • Ford Ka Mk1 1996-2008
  • Ford Mondeo Mk4 1.6 2007-2014
  • Ford Orion Mk1 1.3/1.6/1.6D 1983-1985
  • Ford Orion Mk2 1.4/1.6/1.6D/1.8D 1986-1990
  • Ford Orion Mk3 1990-1993
  • Ford Puma 1.4/1.6/1.7 1997-2001
  • Ford Street Ka 2003-2005
Type BC Fiesta/Escort FWD Gearbox
4 and 5 speed FWD transaxle. Originally designed for the Fiesta Mk1 as a 4 speed gearbox, the 5 speed version was eventually introduced in 1982. It was fitted until 1995 in most FWD applications until being replaced by a similar more refined IB5 gearbox.
Oil capacity 4 speed: 2.8 litres
Oil capacity 5 speed: 3.1 litres
Standard oil grade: SAE80
Input spline: 20mm x 17

Type IB5 5 Speed FWD Gearbox
Current standard duty FWD transaxle which has been fitted since around 1995.
Oil capacity: 2.8 litres
Standard oil grade: 75W90 full-synthetic
Input spline: 20mm x 17
Additional Information

Additional Information

Product Group Differential LSDs & ATBs
Fits Gearbox Type Ford Type IB5 FWD gearbox
Stock Status Available From Stock
Catalogue 2018 Page Click HERE to view this part on page 104 of our 2018 catalogue
Brand Logo Quaife
Fits Model Variant Ford Escort Mk3/Mk4 (All), Ford Escort Mk5 (Not Cosworth/RS2000/XR3i 130PS), Ford Escort Mk6 (Not RS), Ford Fiesta Mk1 (All), Ford Fiesta Mk2 (All), Ford Fiesta Mk3 (All), Ford Fiesta Mk4/Mk5 (All), Ford Focus Mk1 (Not ST170 OR RS), Ford Ka Mk1, Ford Puma (All)
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