One only in stock at this price! SUITABLE FOR BMW 188K MEDIUM CASE 10 BOLT CROWN WHEEL DIFFS. The 188K differential among others (168,188,188L, 210 etc) are most commonly used in 6 cylinder engine versions of the following models. BMW E82 123d Auto / 125i / 128i Manual / 135i Auto. BMW E87 118d Auto / 120d Auto 03/2007-09/2008 / 123d Auto / 130i /. BMW E46 318d Auto / 320i Manual with 188L Casing / 323i Auto / 325i / 325ti / 325xi / 328i 3.46:1 ratio / 330i Auto. BMW E90 320d Auto with 7591017 Diff / 320d Manual with 7591074 Diff / 320i with 188K Casing / 325i Auto / 328i Auto / 325i Manual with 7591015 Diff / 328xi Manual / 330i / 335i Auto with 7572055 Diff / 335xi Auto /. BMW E92 320d Auto with 7591017 Diff / 325i Auto / 328i / 325i Manual with 7529109 & 7591015 Diff / 330i / 335i Auto with 7572055 Diff / 335xi Auto. BMW E39 520i Manual / 523i. BMW E60 520d Auto / 520i / 525i Auto / 525i SMG / 530i Auto / 535i Auto / 535xi Auto. BMW F10 535i Auto / 535i Manual. BMW E38 728i Auto. BMW F01 740i – Check Diff Fitted / 740li – Check Diff Fitted. BMW E83 2.0d Auto Rear / 3.0i Manual Rear. BMW E53 3.0i Manual Rear Diff / 4.4i Auto Rear Diff / 4.6is Auto Rear Diff. BMW E70 3.0d Auto Rear. BMW E85 Alpina Roadster S 3.4 / 2.5i / 3.0si / 2.5si SMG / 3.0i Auto. BMW E89 2.3i S Drive / 3.0i S Drive. Not suitable for 168,188,188L, 210 Differentials – also available in our shop. We recommend that you check for correct fitment before purchasing. Why Choose a 3J Driveline NXG Performance LSD? The NXG Plate-type limited slip differential is designed, manufactured and assembled right here in the UK. It has been engineered to be the strongest, most progressive and versatile LSD unit in the market place today. The NXG Performance bevel and planet gear pack, with its big, strong tooth profile, gives not only a smooth mesh, it also all but eliminates the rattle and excessive back lash often associated with plate-type LSD’s. Whilst the plate pack, which always runs on a minimum of 8 active surfaces (even in our lighter pre-load settings) to give maximum surface-to-surface area contact during use. Because your differential will be assembled by one of our experts here in the UK, we can set it up to suit your exact requirements. 3J Driveline Limited Slip Differentials. The standard “open” differential is ideal in most factory cars, but is far from ideal for getting the best out of your car. It will always transmit the same amount of torque to both wheels – ideal whilst both wheels have 100% grip as they both have 100% of the torque that the engine is delivering too them. But, put one of those wheels in a situation where it can slip – for example on some ice – if it only took a tiny amount of torque to make that wheel turn, exactly the same amount of power would be sent to the wheel that isn’t on ice. Hence why you’ll get one wheel spinning and one not doing anything. The same theory can be applied to cornering. As the weight of the vehicle is transferred and the tyre on the inside begins to be lifted off of the ground, the amount of engine power required to make it turn is significantly reduced and so the amount of power sent to the outside “loaded” wheel, will be exactly the same. At which point, it wouldn’t matter if you had 50bhp or 500bhp, as none of it would be getting to the wheel with any grip. To get around this an LSD can be fitted. A LSD, or limited slip diff, does as it says on the tin – limits the amount of slip of that inside wheel. It does this by essentially transferring torque directly from the housing to the side gears and thus bypassing the actually differential bevel gears. Whether it’s by the traditional method of “clutch plates”, or the more contemporary method of an additional set of bevel gears, the end result is essentially the same. (NOTE: This is NOT a TorSen, Torque Biasing or Helical Gear LSD). Assembled Differential Unit ONLY. Bearings, gears, gaskets/seals etc are NOT included. No instructions are included. Questions: 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.