CUSTOM DIFF BUILDER

Differentials ready to bolt in. Built to order. All are fitted with new bearings and seals. These are blueprinted and guaranteed to be within OEM specifications. Diff Lab's target blueprint specicifations are much narrower than BMW's specifications, so you can be assured you're getting the best build every time. Builds can take 1-3 days. If the job is urgent, please let me know. Motorsport gears can have ~10 days lead time. Just add one of these items to your car along with the LSD you'd like, and the gear set you'd like. It will be assembled for you and delivered. All differentials are exchange units. An exchange differential must be returned to Diff Lab within seven (7) days of receiving your new differential. A core charge is needed, and is refunded after your differential has been returned.


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BMW 135i 235i 335i 435i 535i 545i 215K Diff Builder

BMW 135i 235i 335i 435i 535i 545i 215K Diff Builder

215K BMW Diff BuilderUse this diff builder to create your ultimate differential. Options on this pag..

$838.00

BMW E21 / 2002 LSD Diff 3.91 Pre-Built

BMW E21 / 2002 LSD Diff 3.91 Pre-Built

BMW E21 / 2002 3.91 1.5-Way 40% LSD.This is a pre-built differential to suit E21 and 2002. It is an ..

$1,649.00

BMW E28, E30, E32, E34, E36 Diff Builder

BMW E28, E30, E32, E34, E36 Diff Builder

Early Model BMW Diff BuilderUse this diff builder to create your ultimate differential. Options on t..

$699.00

BMW E36 E46 E60 E90 M3 M5 210mm Diff Builder

BMW E36 E46 E60 E90 M3 M5 210mm Diff Builder

210mm BMW Diff BuilderUse this diff builder to create your ultimate limited slip differential. Optio..

$718.00

BMW E39 E46 323i 325i 328i 188K Diff Builder

BMW E39 E46 323i 325i 328i 188K Diff Builder

This is a fully rebuilt Limited Slip Differential for E39 or E46. It is a mid-case 188K unit w..

$778.00

BMW E53 X5 Rebuilt Differential

BMW E53 X5 Rebuilt Differential

This is a fully rebuilt BMW E53 X5 differential. It has had all new genuine ball bearings, new genui..

$2,499.00

BMW E70 X5 Rebuilt Differential

BMW E70 X5 Rebuilt Differential

This is a fully rebuilt BMW E70 X5 differential. It has had all new genuine ball bearings, new genui..

$2,499.00

BMW Late Model 318i 320i 323i Rebuilt Diff

BMW Late Model 318i 320i 323i Rebuilt Diff

An exchange 168LW ball bearing diff to suit E81, E82, E87, E88, E90, F21, F21, F22, F45, F46, F30, 1..

$799.00

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