BMW E46 E90 E70 X5 E83 X3 QUAIFE FRONT LSD DIFFERENTIAL LIMITED SLIP DIFF QDF21N

Description: QUAIFE ATB LSDAutomatic Torque Biasing Limited Slip Differential SUITABLE FOR BMW 4WD MODELS FRONT AXLE:E46 330iX Front DiffE46 325iX Front DiffE46 330DX Front DiffE90 335iX Manual Front DiffE70 X5 50iX Front Diff (Requires Machining)E83 X3 3.0D Front DiffE83 X3 2.0D Front DiffE83 X3 3.0SD Front DiffPlease Note - Buyers must add message at checkout of the last 7 digits of the cars chassis number &/or the differential part number.The Compatibility Chart and models listed above is a guide ONLY please make sure this item is suitable for your model BEFORE purchase or contact us - some models may have technical issues making this unit unsuitable.Quaife ATB Limited Slip DifferentialOften imitated but never improved, the Quaife Automatic Torque Biasing (ATB) limited slip differential is the perfect traction solution that delivers noticeable performance benefits on any car using a factory ‘open’ differential unit.Widely accepted as the upgrade of choice for road car owners and motorsport competitors looking to improve their vehicle’s traction, handling balance and braking capabilities, the Quaife ATB limited slip differential is a direct replacement for a standard factory ‘open’ differential and is available for most popular front, rear and four-wheel-drive cars.Originally introduced in the 1980’s, Quaife ATB limited slip differentials are well proven, precision engineered, British made, highly durable and used worldwide in rallying, circuit racing, sprinting, rallycross and Time Attack, as well as the open road.Key FeaturesSafe, 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 conditionsFitment greatly reduces unwanted torque steer, understeer or oversteerDesigned to work in harmony with road car electronic stability and traction control programsImproves braking performance on front wheel drive cars by reducing lock up and minimising ABS intrusion due to torque transfer actionReduces tyre wear, especially on front wheel drive carsGear operated with no service components to replace – everDirect replacement for factory standard ‘open’ differential unitRetains normal axle lubrication systems and maintenance scheduleOver 100,000 units sold worldwide since the 1980’sAvailable for over 400 different applicationsBacked by a Quaife lifetime warranty for both motorsport and road use What It DoesOnce installed, drivers will notice an immediate difference, as the Quaife (ATB) limited slip differential automatically biases the torque across the axle to the wheel with the most grip. Unwanted wheelspin and slip are greatly reduced, resulting in less understeer on front or four wheel drive machines and reduced oversteer on rear wheel drive vehicles. Rear wheel drive cars with a Quaife limited slip differential become more controllable during oversteer moments, enabling drivers to exploit the full potential of their machines for the first time, leading to a more exciting, rewarding and rapid driving experience. On front wheel drive cars the Quaife ATB limited slip differential also delivers significant performance benefits during heavy braking. In this situation the Quaife differential’s inherent torque transfer characteristics work in reverse to transfer torque away from the locking wheel. This enhances deceleration, delaying the intrusion of electronic ABS systems and allowing drivers to brake later and deeper with the Quaife ATB limited slip differential than is possible with a standard ‘open’ differential unit.Add these benefits together and it’s hardly surprising that in outright performance terms the Quaife ATB differential can make a remarkable difference compared to an ‘open’ differential. Back to back independent testing by Redline Magazine on a RenaultSport Clio 200 has proven that even on a short circuit lap times are reduced by over 2 seconds, making the Quaife ATB differential an excellent value for money upgrade.Superior Quality, Safe Performance, No Wear, Lifetime WarrantyFully compatible with manufacturer electronic traction control and anti-lock braking systems, the Quaife ATB differential offers a number of key advantages in both functionality and service life compared to conventional plate-style LSD units.Silent in operation (even during low-speed parking manoeuvres) the Quaife ATB limited slip unit never ‘locks,’ making it progressive, safe and user friendly. Unlike plate-style LSD designs there are no clutches, ramps, springs or other wear prone components to replace at regular intervals, because the Quaife ATB’s well-proven system of helical gears is extremely durable, plus it’s designed to use standard transmission oils.This makes the Quaife ATB limited slip differential a genuine ‘fit and forget’ upgrade that offers compromise-free performance and unbeatable reliability on the street, strip, stage or circuit, backed by a lifetime warranty.Trusted By OEMsThe Quaife ATB Differential has been used by some of the world’s most revered motor manufacturers in their high performance model lines. Ford, General Motors (GM), BMW, Lotus and Chrysler are just some of those who have chosen our signature ‘traction enhancer’. Models have included all three generations of Ford Focus RS, the Lotus Evora 400, Mini JCW Challenge and Chevrolet Cobalt SS. The latest model to feature the ATB is Ford’s highly sought after 2018 Fiesta ST hot hatch.British Made Through And ThroughAll of Quaife’s products are precision manufactured from certified steel billets and inspected to ISO9001-2008 standards. Our ATB Differentials are produced in the South East of England; at our Gillingham manufacturing hub in Kent. With advanced 3D CAD/CAM design suite software, robotic 3 – 4 and 5-axis CNC machining centres and tri-coordinate measuring machines operated by skilled personnel, Quaife redefines the boundaries of what’s possible in the field of mechanical precision engineering. As an ISO9001 registered company, quality control is a vital part of what we do. We have specialist Quality Inspectors trained to operate all of our temperature calibrated inspection machines. Rest assured, your ATB Differential comes with quality guaranteed, back up by our lifetime warranty.(NOTE: This is NOT a plate type, viscous coupling or clutch pack LSD) INCLUDES:Assembled Differential Unit ONLYBearings, gears, gaskets/seals etc are NOT included No instructions are included IMPORTANT INFORMATION:Postage: We will endeavour to despatch most items purchased before 3pm the same day (may not be possible on all items following bank holidays/busy periods etc). If any items cannot be despatched within the stated time frame we will contact you - despatch times are shown on each listing (we cannot be held responsible for delivery companies/couriers that do not deliver on time due to address queries/bad weather/locational errors etc). For shipping prices please click on the "Postage and Payments" tab (postage prices also include packaging/materials & other costs). Most of our listings have a number of postage options - please select the service you require BEFORE purchase. If you have selected a postage service with a tracking number, one will be uploaded to eBay at the end of the working dayQuestions: We are happy to do our best to answer sensible, genuine questions during our normal office hours (Mon-Fri 09:30-17:30), however please note we do not have intimate knowledge of all makes & models or have personal experience of fitting/using all our products. Products only fit models stated (if products fit other models its in our favour to say so)! Products listed as universal fitment are not designed for any one model. Models suggested are appropriate for the product listed but please check specs/sizes where stated - please have an understanding of what you are buying before purchase. Please allow 24h for us to respond to your question, if more than 24 hours has elapsed please contact us againFeedback: Please be reasonable - we do not like to give or receive anything but positive feedback. If you have a problem with your order please contact us and give us the opportunity to rectify the situation - mistakes do happen, not often but they do happenAbove all we want you to have a positive buying experience and purchase from us again

Price: 1063.99 GBP

Location: Dorking

End Time: 2024-02-17T13:40:59.000Z

Shipping Cost: 101.35 GBP

Product Images

BMW E46 E90 E70 X5 E83 X3 QUAIFE FRONT LSD DIFFERENTIAL LIMITED SLIP DIFF QDF21N

Item Specifics

Return postage will be paid by: Buyer

Returns Accepted: Returns Accepted

After receiving the item, your buyer should cancel the purchase within: 30 days

Return policy details: CONDITIONS FOR RETURN: ITEMS FOR RETURN MUST BE AUTHORISED IN ADVANCE. POSTAGE IS NOT REFUNDABLE. RETURNED ITEMS/PACKAGING MUST BE IN AS NEW CONDITION. A HANDLING CHARGE MAY APPLY TO SOME ITEMS. TO AVOID NEEDLESS MISTAKES MAKE SURE YOU HAVE AN UNDERSTANDING OF WHAT YOU ARE BUYING AND WHAT PARTS FOR YOUR MODEL LOOK LIKE BEFORE PURCHASE. UNIVERSAL FITMENT - MEANS NOT DESIGNED FOR ANY ONE PARTICULAR MODEL. WHERE SIZES/SPECS ARE GIVEN PLEASE MAKE SURE THESE ARE SUITABLE FOR YOUR MODEL BEFORE PURCHASE. DO NOT ASSUME/GUESS CHEAPER PARTS WILL FIT MODELS THEY ARE NOT LISTED FOR. IF YOU ARE IN ANY DOUBT DO NOT BUY. PLEASE READ & UNDERSTAND LISTINGS FULLY. MODEL SPECIFIC ITEMS - WHERE MODEL INFO IS REQUESTED STATE EXACT MODEL & YEAR ON PAYMENT. WHERE UPGRADES/VARIATIONS FROM THE STANDARD ITEM ARE OFFERED REQUEST TOTAL & STATE ON PAYMENT. DO NOT ASSUME BRAND NEW MASS PRODUCED ITEMS ARE FAULTY IF PROBLEMS ARE ENCOUNTERED - SEEK PROFESSIONAL HELP/ADVICE - 99.9% OF PROBLEMS ARE DUE TO FITTING/OUTSIDE ERRORS. FOLLOW FITTING INSTRUCTIONS(WHERE SUPPLIED) - FUEL PUMPS MUST BE PRE-FILTERED ETC. MOST ITEMS SOLD ARE DESIGNED FOR PROFESSIONAL/MOTORSPORT USE, TO BE FITTED BY EXPERIENCED/QUALIFIED ENGINEERS - DO NOT ATTEMPT TO FIT THESE PARTS IF YOU DON'T HAVE THE SKILLS OR EXPERIENCE. OBSERVE ALL SAFETY PRECAUTIONS/SAFE WORKING PRACTICES. I STRONGLY ADVISE ANY ITEMS RETURNED ARE SENT RECORDED DELIVERY - DO NOT SEND HIGH VALUE ITEMS UNRECORDED/UNINSURED. HOURS OF BUSINESS: 8AM-5PM MON-FRI.

Item Diameter: N/A

Manufacturer Part Number: QDF21N

Shaft Diameter: N/A

Grade: Certified steel billets and inspected to ISO9001-2008 standards

Superseded Part Number: n/a

Item Length: N/A

Bore Diameter: N/A

Suitable For: 4WD FRONT Differential

Reference OE/OEM Number: n/a

Placement on Vehicle: Front

Brand: Quaife

Type: Torsen & Helical Differential