BMW Differential and Gearing Upgrades for BMW 7 Series E38 (1995-2001)

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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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Turner Titanium Magnetic Differential Drain Plug - M22x1.5
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Turner Motorsport - Corporate Logo
T#:593924
Part#: 027030TMS01
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When both extreme-duty protection and saving every gram matters: the Turner Magnetic Differential Drain Plug.
OEM Rein Magnetic Differential Oil Drain Plug - M22x1.5 - Most BMW & ...
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Rein - Corporate Logo
T#:38890943
Part#: HWU0065
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$ 22.79 USD
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As components in the differential begin to wear, metal particles become loose in the diff fluid, which can lead to excess wear. This magnetic plug pulls these particles out of suspension, helping to reduce wear over time. Replaces BMW # 33117525064
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Genuine BMW Differential Axle Shaft Seal w/ Lock Ring - E46 M3, E9x M...
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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
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Is your rear differential leaking from the axle seal ? Here is the sealing gasket for the output axle flange, includes locking snap ring.

ECS Magnetic Differential Oil Drain Plug - Most BMW & Mini Models ...
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ECS - Corporate Logo
T#:366828
Part#: 009314ECS01A
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Sale - Save 25% $ 62.99

This product was last offered at the strikethrough price on
06-13-2026

$ 47.24 USD
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$ 62.99

This product was last offered at the strikethrough price on
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$ 47.24 USD
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You use a magnetic drain plug for your engine oil, right? Why not apply the same proactive thinking to the differential too? This is a direct replacement magnetic differential drain plug for your BMW. It will catch and retain fine and larger metal particles in your diff oil. If you're proactive in your diff oil servicing, you will catch a minor issue long before it becomes a headache. Diff drain plug includes one sealing o-ring. Direct replacement for Genuine BMW part number(s): 33117525064, 33110308370, 33110152626
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Loctite 5970 Gasket/Sealing Compound - 50ml
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Loctite - Corporate Logo
T#:25772539
Part#: 5970
In Stock
$ 54.66 USD
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This Loctite 5970 Sealant is recommended by BMW to be used to seal the rear differential cover and numerous engine oil pans. Also used for multiple MINI, Audi, and VW applications.
Front Differential Bushing - Priced Each
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Meyle - Corporate Logo
T#:362591
Part#: 33171090389
In Stock
$ 28.99

This product was last offered at the strikethrough price on
05-07-2026

$ 23.99 USD
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$ 23.99 USD
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Genuine BMW Axle Shaft Seal With Lock Ring 33107505605
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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
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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
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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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Victor Reinz Shaft Seal with Lock Ring - Differential Output Shaft (7...
For vehicles with production date up to 02/96
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Victor Reinz - Corporate Logo
T#:596464
Part#: 33107510289
In Stock at Vendor
$ 22.99

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$ 22.00 USD
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$ 22.00 USD
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Permatex "Right Stuff" Gasket Maker
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Permatex - Corporate Logo
T#:361188
Part#: 29208
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$ 33.19 USD
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Creates gaskets the same way as OEM car manufacturers

Victor Reinz Shaft Seal - E38, E39, E60, E61, E63, E64, E65, E82, E88...
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Victor Reinz - Corporate Logo
T#:362359
Part#: 33107505605
Ships in 1 day
$ 29.99

This product was last offered at the strikethrough price on
05-07-2026

$ 28.99 USD
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$ 28.99 USD
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Seals the axle into the differential
Genuine BMW Rubber Mounting Front - 33171090389 - E38,E39,E39 M5 ...
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Genuine BMW - Corporate Logo
T#:19811
Part#: 33171090389
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5% off MSRP $ 82.99

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

$ 78.99 USD
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$ 82.99

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

$ 78.99 USD
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Genuine BMW Rubber Mounting Front
This item fits the following BMW Chassis:
E39 M5,E38,E39

Genuine BMW Vibration Absorber - 33316770851 - E36,E38,E39
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Genuine BMW - Corporate Logo
T#:20837
Part#: 33316770851
Special Order: No Guaranteed ETA
3% off MSRP $ 260.99

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

$ 253.99 USD
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$ 260.99

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$ 253.99 USD
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Absorbs vibration in the drive-train to help dampen noise that would be transferred to the cabin of the vehicle.

Genuine BMW Vibration Absorber -
This item fits the following BMW Chassis:
E36,E38,E39
 

 

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OEM Lemforder Vibration Absorber - 33316770851 - E36,E38,E39 ...
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Lemforder - Corporate Logo
T#:399252
Part#: 33316770851
Special Order: No Guaranteed ETA
$ 107.99 USD
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$ 107.99 USD
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Absorbs vibration in the drive-train to help dampen noise that would be transferred to the cabin of the vehicle.

This item fits the following BMW Chassis:
E36,E38,E39

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Genuine BMW Output Shaft Seal - 33107505604
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Genuine BMW - Corporate Logo
T#:360861
Part#: 33107505604
In Stock
9% off MSRP $ 18.20

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

$ 16.50 USD
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9% off MSRP
$ 18.20

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

$ 16.50 USD
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**Will only fit E92's after a production date of 9/2007 Two seals are required per vehicle. Maintaining a proper amount of fluid in the rear differential is vital to the performance and longevity of the differential. If a leaking shaft seal is left untouched, the results could be catastrophic.
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Genuine BMW Dust Cover Plate - E31 850Ci 850CSi, E38 750iL, E39 M5 ...
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Genuine BMW - Corporate Logo
T#:59493
Part#: 33131213713
In Stock
7% off MSRP $ 13.99

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

$ 12.99 USD
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7% off MSRP
$ 13.99

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

$ 12.99 USD
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Genuine BMW Dustcover Plate, Large
This item fits the following BMW Chassis:
E39 M5,E38,E39


Genuine BMW Rubber Mounting Rear - 33171090089 - E38
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Genuine BMW - Corporate Logo
T#:59587
Part#: 33171090089
In Stock
Sale - Save 6% $ 49.99

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

$ 47.23 USD
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$ 49.99

This product was last offered at the strikethrough price on
06-15-2026

$ 47.23 USD
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Genuine BMW Rubber Mounting Rear -
This item fits the following BMW Chassis:
E38


Genuine BMW Hex Nut With Plate - 07129904862
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Genuine BMW - Corporate Logo
T#:28828
Part#: 07129904862
In Stock
$ 3.99 USD
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Genuine BMW Hex Nut With Plate
This item fits the following BMW Chassis:
E39 M5,E60 M5,E63 M6,E46 M3,E70 X5M,E71 X6M,E85 Z4M,E53 48IS,E30,E36,E38,E39,E46,E53 X5 X5,E63,E65,E70 X5,E71 X6,E85 Z4,E86 Z4,E89 Z4,E90,E92,E93,F01,F02,F06,F10,F12,F13,F15,F16

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Genuine BMW Differential Plug Gasket, 22x27 - 07119963355
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Genuine BMW - Corporate Logo
T#:348476
Part#: 07119963355
In Stock
$ 3.40 USD
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When servicing the rear axle and differential, it is always best to replace this sealing washer to prevent any potential leaks from forming.

Differential Drain Plug with O-Ring - Most BMWs
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Genuine BMW - Corporate Logo
T#:7923
Part#: 33117525064
In Stock
15% off MSRP $ 11.61

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

$ 9.87 USD
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15% off MSRP
$ 11.61

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

$ 9.87 USD
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This is the front or rear Genuine BMW differential fluid drain plug for many BMWs. This can also be the transfer case plug or automatic transmission plug on some BMWs.

+ Year & Model Applications
(click to expand)
This item fits the following BMWs:
1970-1976 2002 BMW 1600 2002 2002tii
2008+ E82 BMW 128i 135i 1M Coupe
1977-1983 E21 BMW 320i 323i
1984-1991 E30 BMW 318i 318is 318ic 325e 325es 325i 325ic 325is 325ix M3
1992-1998 E36 BMW 318i 318is 318ti 318ic 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi M3
2006-2011 E90 BMW 325i 325xi 328i 328xi 328i xDrive 330i 330xi 335d 335i 335xi 335i xDrive M3 - Sedan
2006-2012 E91 BMW 325xi 328i 328xi 328i xDrive - Wagon
2007-2012 E92 BMW 328i 328xi 328i xDrive 335i 335is 335xi 335i xDrive M3 - Coupe
2007-2012 E93 BMW 328i 335i M3 - Convertible
1976-1981 E12 BMW 528i 530i
1982-1988 E28 BMW 524td 528e 533i 535i 535is M5
1989-1995 E34 BMW 525i 530i 535i 540i M5
1997-2003 E39 BMW 525i 528i 530i 540i M5
2004-2010 E60 BMW 525i 525xi 530i 530xi 528i 528xi 528i xDrive 535i 535xi 535i xDrive 545i 550i M5
2010+ F07 BMW 535i GT, 535i xDrive GT, 550i GT, 550i xDrive GT
2011+ F10 BMW 528i 528i xDrive 535i 535i xDrive 550i 550i xDrive M5
1982-1989 E24 BMW 633csi 635csi M6
2004-2010 E63 BMW 645ci 650i M6
2012+ F12 BMW 640i 650i
1981-1987 E23 BMW 733i 735i
1988-1994 E32 BMW 735i 735il 740i 740il 750il
1995-2001 E38 BMW 740i 740il 750il
2002-2008 E65 BMW 745i 745li 750i 750li 760i 760li
2009+ F01 BMW 740i 740li 750i 750li 750i xDrive 750li xDrive 760li
1990-1999 E31 BMW 840i 840ci 850i 850ci 850csi
2004-2010 E83 BMW X3 2.5i X3 3.0i X3 3.0si
2011+ F25 BMW X3 xDrive28i X3 xDrive35i
2000-2006 E53 BMW X5 3.0i X5 4.4i X5 4.6is X5 4.8is
2007-2013 E70 BMW X5 3.0si X5 4.8i X5 xDrive30i X5 xDrive35d X5 xDrive35i X5 xDrive48i X5M
2008+ E71 BMW X6 xDrive35i X6 xDrive50i X6M
1997-2002 Z3 BMW Z3 1.9 Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i M Roadster M Coupe
2003-2008 E85 BMW Z4 2.5i Z4 3.0i Z4 3.0si Z4 M Roadster M Coupe
2009+ Z4 BMW Z4 sDrive30i Z4 sDrive35i Z4 sDrive35is
2000-2003 E52 BMW Z8 Roadster

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Genuine BMW O-ring - 33111214144
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Genuine BMW - Corporate Logo
T#:25199
Part#: 33111214144
In Stock
$ 8.99 USD
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Genuine BMW O-Ring - D=90Mm/3Mm
This item fits the following BMW Chassis:
E30 M3,E36 M3,E34 M5,E60 M5,E63 M6,E46 M3,E82 1M Coupe,E85 Z4M,E30,E34,E36,E38,E46,E63,E82,E85 Z4,E86 Z4,E90,E92,E93,F06,F10,F12,F13,F80 M3,F82 M4,F83

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Genuine BMW Engine & Trans Suspension Hex Nut With Plate 22316760944 ...
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Genuine BMW - Corporate Logo
T#:7561
Part#: 22316760944
In Stock
$ 2.99 USD
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Genuine BMW Hex Nut With Plate - M8
This item fits the following BMW Chassis:
E30 M3,E36 M3,E34 M5,E39 M5,E60 M5,E63 M6,E46 M3,E82 1M Coupe,E85 Z4M,E30,E34,E36,E38,E39,E46,E63,E65,E82,E85 Z4,E86 Z4,E89 Z4,E90,E92,E93,F22,F30,F31,F32,F33,F34,F36,F80 M3,F82 M4,F83

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Victor Reinz Differential Rear Axle Shaft Seal with Lock Ring - E46 M...
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Victor Reinz - Corporate Logo
T#:7917
Part#: 33107510289
In Stock
$ 25.44

This product was last offered at the strikethrough price on
06-12-2026

$ 18.78 USD
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$ 18.78 USD
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Leaking differential output seals? Replace yours today with this OEM replacement. This seal measures 76x50x10.
Genuine BMW Dustcover Plate, Large - 33137500876
For vehicles with production date from 06/2000
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:59544
Part#: 33137500876
Ships in 1 day
5% off MSRP $ 19.99

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

$ 18.99 USD
Free Shipping on orders $49 and up
5% off MSRP
$ 19.99

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

$ 18.99 USD
Free Shipping on orders $49 and up


Genuine BMW Dustcover Plate, Large -
This item fits the following BMW Chassis:
E38,E82,E89 Z4,E90,E92,E93

Rein Differential Drain Plug Gasket
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Rein - Corporate Logo
T#:19654
Part#: 07119963355
Ships in 3 Business Days
Sale - Save 5% $ 2.03

This product was last offered at the strikethrough price on
06-29-2026

$ 1.93 USD
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Sale - Save 5%
$ 2.03

This product was last offered at the strikethrough price on
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$ 1.93 USD
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GASKET RING for various sensors and seals.


Elring Differential Output Shaft Seal - BMW E82 E9X Z4 E39 E60 E63/64...
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Elring - Corporate Logo
T#:44767282
Part#: 082.770
In Stock
$ 24.99 USD
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$ 24.99 USD
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Eliminate differential leaks with all new output shaft axle seals from Elring Replaces BMW p/n 33107568368, 33107505605, & 33100152629
Febi Drain Plug Gasket
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Febi - Corporate Logo
T#:340702
Part#: 07119963355
Ships on Sep 28, 2026
$ 2.99

This product was last offered at the strikethrough price on
01-02-2026

$ 1.99 USD
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$ 1.99 USD
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22x27 aluminum sealing ring
OEM Lemforder Rear Subframe Mount, Rear - 33171090089 - E38, E52 Z8 ...
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Lemforder - Corporate Logo
T#:398339
Part#: 33171090089
Ships on Dec 1, 2026
$ 19.99 USD
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Exposure to the elements and stress/pressure can lead to failing and splitting subframe bushings. Ensure your subframe is mounted perfectly steady to prevent vibrations, knocks, suspension issues, and potential damage to the body of the vehicle or suspension components. OEM Lemforder is the perfect replacement to make sure that everything is mounted properly.

OEM Lemförder is an engineering company that focuses on high-quality, precision manufacturing of critical suspension and steering components. Providing exceptionally high quality parts directly to BMW, as well as 50+ other big name automotive companies, such as Mercedes and Audi, their history of reliability and variety of offered parts makes them one of the biggest names for a go-to OEM parts provider. Lemförder parts place an important emphasis on design, production, and assembly, ensuring maximum reliability. They even coat all parts possible with corrosion protection for extended longevity.

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!

This item fits the following BMW Chassis:
1995-2001 E38 BMW 740i 740iL 750iL
2000 - 2004 E52 BMW Z8 Roadster, Alpina

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