Genuine BMW BMW Differential and Gearing Upgrades for BMW 3 Series E90 (2006-2011)

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Upgrading various parts of the differential can have tremendous benefits in your car's performance. It's easy to forget that the differential is a source for making your car faster and handle better so it's often overlooked. The engine is not the only place to make the car faster. Our differential options vary from gearing upgrades to limited slip conversions. You can purchase the ring & pinion gear sets on their own (professional installation required) or have us build a diff around your own specifcations. The options are almost endless! Every custom-built diff is fully rebuilt with seals and bearings. We also design and supply bushing options to reduce driveline wind-up, finned differential covers for better cooling, and more!

Ratio Changes - Changing the differential gearing is one of the best and most-effective upgrades you can make on any BMW (old or new). By using a shorter (numerically higher) final drive ratio you are increasing your RPM relative to road speed - this puts you in a more powerful RPM range than before! Since you're in a 'meatier' part of the power band you're now putting down more power/torque to the ground. If you can trade outright top speed for faster acceleration at daily speeds then this is the perfect upgrade for you.

Limited Slip Upgrades - Sadly, many BMWs today are not equipped with a limited slip (posi-traction) differential. BMW has tried to compensate by using traction control that cuts power at the engine or applies the brakes to retard wheel spin (or a combination of both). But nothing beats the function and feel of a a true LSD which may be why BMW continues to use them in M cars. Our LSD upgrades can be done a number of different ways - a factory-type limited slip unit with either 2 or 3 clutch packs, helical type, OS Giken unit, or something truly custom. We can also vary ramp angles and setup to change the limited-slip behavior under acceleration, deceleration, and cornering. Need a custom diff? Call or e-mail to have a quote.

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Genuine BMW Differential Axle Shaft Seal w/ Lock Ring - E46 M3, E9x M...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:360862
Part#: 33107510289
In Stock
9% off MSRP $ 38.69

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 35.13 USD
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9% off MSRP
$ 38.69

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 35.13 USD
Free Shipping on orders $49 and up
Is your rear differential leaking from the axle seal ? Here is the sealing gasket for the output axle flange, includes locking snap ring.
Differential Input Shaft Seal - E82 E46 E9X E39 E60 Z4
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:7924
Part#: 33121213949
In Stock
5% off MSRP $ 70.61

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 66.99 USD
Free Shipping on orders $49 and up
5% off MSRP
$ 70.61

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 66.99 USD
Free Shipping on orders $49 and up
Replace your leaking differential input seal with this Genuine BMW part. Whenever service is performed on the differential it is a good idea to check / replace any seals. This seal measures 50mm X 80mm X 9mm. We also recommend you replace the securing plate # 33121205138 at the same time.

This item fits the following BMWs:
2011 E82 BMW 1M Coupe
2001-2006 E46 BMW M3
2008-2011 E90 BMW M3 - Sedan
2008-2013 E92 BMW M3 - Coupe
2008-2013 E93 BMW M3 - Convertible
1988 E28 BMW M5
1991-1995 E34 BMW 540i M5
1999-2003 E39 BMW M5
2006-2010 E60 BMW i M5
2011+ F10 BMW M5
1987-1989 E24 BMW M6
2006-2010 E63 BMW M6
2012+ F12 BMW M6
2013+ F06 BMW M6 Gran Coupe
1988-1994 E32 BMW 740i 740il 750il
1990-1999 E31 BMW 840i 840ci 850i 850ci 850csi
2006-2008 E85 BMW Z4 M Roadster M Coupe
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Rear Differential Carrier Bushing - Front Position - E82,E90,E92,E93 ...
This is an M specification bushing and is an upgrade for your vehicle
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:13479
Part#: 33312284019
In Stock
25% off MSRP $ 100.20

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 74.99 USD
Free Shipping on orders $49 and up
25% off MSRP
$ 100.20

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 74.99 USD
Free Shipping on orders $49 and up
BMW M replacement bushing. Great stock replacement for M vehicles or as an upgraded to the non-M bushings.

BMW Differential Seal - Rear Axle
For pre LCI models 335i, 335is and 335xi, from production date 07/2009
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Genuine BMW - Corporate Logo
T#:31655802
Part#: 33108860346
Ships in 1-2 days
2% off MSRP $ 96.58

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 94.99 USD
Free Shipping on orders $49 and up
2% off MSRP
$ 96.58

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 94.99 USD
Free Shipping on orders $49 and up
Proper fluid levels in the rear differential are crucial for its performance and longevity. Ignoring a leaking shaft seal can lead to severe damage. Each vehicle requires two seals.

Genuine BMW Differential Service Kit - E46 M3, E90 E92 E93 M3, Z4 M, ...
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Genuine BMW - Corporate Logo
T#:370652
Part#: E46M3DIFSER
In Stock
$ 226.99

This product was last offered at the strikethrough price on
06-03-2026

$ 212.99 USD
Free Shipping
$ 212.99 USD
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Genuine BMW Axle Shaft Seal With Lock Ring 33107505605
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:20829
Part#: 33107505605
Ships in 1 day
8% off MSRP $ 23.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 21.99 USD
Free Shipping on orders $49 and up
8% off MSRP
$ 23.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 21.99 USD
Free Shipping on orders $49 and up

Used to create a seal on your differential where the axle shaft connects


Genuine BMW Shaft Seal With Lock Ring - 100X50X10
This item fits the following BMW Chassis:
E53 48IS,E38,E39,E53 X5,E63,E65,E82,E89 Z4,E90,E92,E93
 

 

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Genuine BMW Differential Carrier Bushing - Rear Position - E90 E92 E9...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:60061
Part#: 33312283384
Ships in 1 day
2% off MSRP $ 103.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 101.99 USD
Free Shipping
2% off MSRP
$ 103.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 101.99 USD
Free Shipping
This is the rear differential carrier bushing located in the rear subframe.
Genuine BMW Output Shaft Seal Dust Cover - Large
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:59505
Part#: 33131428097
Ships in 1 day
5% off MSRP $ 56.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 54.00 USD
Free Shipping on orders $49 and up
5% off MSRP
$ 56.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 54.00 USD
Free Shipping on orders $49 and up


Genuine BMW Dust Guard Ring, Outer - D=68,8
This item fits the following BMW Chassis:
E39,E46,E53 X5,E65,E70 X5,E82,E83 X3,E85,E86,E89 Z4,E90,E92,E93,F01,F02,F06,F10,F12,F13,F15,F16,F25 X3,F26 X4

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Genuine BMW Rubber Mounting Front - 33176760287 - E82,E90,E92,E93 ...
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Genuine BMW - Corporate Logo
T#:25594
Part#: 33176760287
In Stock
13% off MSRP $ 59.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 52.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
13% off MSRP
$ 59.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 52.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up

Bushings tends to wear over time and split or even break free from the internal sleeve, causing excessive movement and sloppy control feel. Genuine BMW bushings are the perfect option to restore suspension back to day 1 quality.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!


Genuine BMW Rubber Mounting Front -
This item fits the following BMW Chassis:
E82,E90,E92,E93

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Complete Xdrive Differential And Transfer Case Service Kit
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:587067
Part#: 07512293972TKT
In Stock
$ 184.99

This product was last offered at the strikethrough price on
06-03-2026

$ 179.99 USD
Free Shipping
$ 179.99 USD
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Genuine BMW Differential Service Kit - E90/2/3 328i 330i/xi, E53 E70...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:376883
Part#: 33117695240KT1
Ships in 1 day
$ 304.99

This product was last offered at the strikethrough price on
03-04-2026

$ 278.99 USD
Free Shipping
$ 278.99 USD
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Often overlooked, scheduled rear differential service is very important. Over time gear lube breaks down causing bearings and internal components fail. Regular maintenance will keep your vehicle running properly for years to come.

Please see kit contents tab for included items.

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Genuine BMW Rear Differential Carrier Bushing
Rear Position
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:25596
Part#: 33176770866
Ships in 1 day
13% off MSRP $ 83.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 72.99 USD
Free Shipping on orders $49 and up
13% off MSRP
$ 83.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 72.99 USD
Free Shipping on orders $49 and up


Genuine BMW Rubber Mounting Rear -
This item fits the following BMW Chassis:
E82,E83 X3,E85,E86,E90,E92,E93