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BMW E90 M3 S65 4.0L

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BMW E90 M3 S65 4.0L Differential Parts

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Differential Service Kit

ES#1895208 - E46M3DIFSER - Differential Service Kit - All you need in one package for scheduled differential maintenance! - Genuine BMW - BMW

All you need in one package for scheduled differential maintenance! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Includes BMW SAF-XJ limited slip differential fluid with FM booster

Brand:
Genuine BMW - Corporate Logo
ES#:
1895208
Mfg#:
E46M3DIFSER
In Stock
$226.99

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

$208.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Gear FF 75w140 - 1 Liter

ES#3031703 - 105779 - Gear FF 75w140 - 1 Liter - Designed for use in differentials with LSD - Motul - BMW

Designed for use in differentials with LSD affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Motul - Corporate Logo
ES#:
3031703
Mfg#:
105779
In Stock
6% off MSRP

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

$31.90

This product was last offered at the strikethrough price on
06-08-2026

$29.99 USD
Free Shipping
on orders $49 and up

Differential Axle Shaft Seal - Priced Each

ES#2129953 - 33107510289 - Differential Axle Shaft Seal - Priced Each - Includes locking snap ring - Victor Reinz - BMW

Includes locking snap ring affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Victor Reinz - Corporate Logo
ES#:
2129953
Mfg#:
33107510289
In Stock at Vendor
$25.44 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hypoid Gear Oil 85w90 - 1 Liter

ES#3097303 - 20010 - Hypoid Gear Oil 85w90 - 1 Liter - Mineral based GL5 gear oil, for use on the street or the track - Liqui-Moly - Audi BMW Volkswagen Mercedes Benz Porsche

Mineral based GL5 gear oil, for use on the street or the track affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Liqui-Moly - Corporate Logo
ES#:
3097303
Mfg#:
20010
In Stock
18% off MSRP

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

$14.95

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

$12.25 USD
Free Shipping
on orders $49 and up

75w90NS GL-5 Gear Oil - 1 Quart

ES#4369255 - 1063078TSP - 75w90NS GL-5 Gear Oil - 1 Quart - API Service Class GL 5+ - Redline - Audi BMW Volkswagen Mercedes Benz Porsche

API Service Class GL 5+ affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Redline - Corporate Logo
ES#:
4369255
Mfg#:
1063078TSP
In Stock
$25.49 USD
Free Shipping
on orders $49 and up

Differential O-Ring - Priced Each

ES#55989 - 33111214144 - Differential O-Ring - Priced Each - 90mmx3mm O-Ring that seals the axle flange to differential - Genuine BMW - BMW

90mmx3mm O-Ring that seals the axle flange to differential affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
55989
Mfg#:
33111214144
In Stock
$8.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Performance Polyurethane Differential Bushing - Rear Position

ES#2650404 - PFR5-1226 - Performance Polyurethane Differential Bushing - Rear Position - Transmit more power to the ground and eliminate driveline slop - Powerflex - BMW

Transmit more power to the ground and eliminate driveline slop affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Powerflex - Corporate Logo
ES#:
2650404
Mfg#:
PFR5-1226
In Stock
$52.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

75W-85 Differential Oil - 1 Liter

ES#4680024 - 83222295532 - 75W-85 Differential Oil - 1 Liter - Differential fluid - SAE 75W-85 (GL-5) - Febi - BMW Mercedes Benz

Differential fluid - SAE 75W-85 (GL-5) affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
4680024
Mfg#:
83222295532
Ships in 1 Business Day
$36.99

This product was last offered at the strikethrough price on
06-08-2026

$30.99 USD
Free Shipping
on orders $49 and up

Differential Service Kit

ES#3449386 - 33117525064KT4 - Differential Service Kit - All you need in one package for scheduled differential maintenance! - Assembled By ECS - BMW

All you need in one package for scheduled differential maintenance! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Includes Castrol Syntrax SAF-XJ 75w140 differential fluid

Brand:
Assembled By ECS - Corporate Logo
ES#:
3449386
Mfg#:
33117525064KT4
Back Ordered
$101.04 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

High Performance Gear Oil (GL4+) SAE 75W-90 (20L JUG)

ES#3660870 - 20014 - High Performance Gear Oil (GL4+) SAE 75W-90 (20L JUG) - Fully synthetic GL4+ gear oil, for use on the street or the track - Liqui-Moly - Audi BMW Volkswagen Mercedes Benz Porsche

Fully synthetic GL4+ gear oil, for use on the street or the track affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Liqui-Moly - Corporate Logo
ES#:
3660870
Mfg#:
20014
In Stock at Vendor
$489.99

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

$475.99 USD

Silicone Grease

ES#2650597 - PCG1 - Silicone Grease - Recommended by Powerflex for quiet operation and long service life of polyurethane bushings - Powerflex - Audi BMW Volkswagen MINI Porsche

Recommended by Powerflex for quiet operation and long service life of polyurethane bushings affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Powerflex - Corporate Logo
ES#:
2650597
Mfg#:
PCG1
In Stock
$1.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Differential Input Shaft Seal - Priced Each

ES#4023523 - 33121213949 - Differential Input Shaft Seal - Priced Each - This is the seal for the pinion shaft - SKF - BMW

This is the seal for the pinion shaft affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
SKF - Corporate Logo
ES#:
4023523
Mfg#:
33121213949
In Stock
$17.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Manual Transmission/Differential Fluid 75W-90 - One Gallon

ES#2739026 - 57905 - Manual Transmission/Differential Fluid 75W-90 - One Gallon - For use in front & rear open differentials as well as some manual transmissions - Redline - Audi BMW Volkswagen

For use in front & rear open differentials as well as some manual transmissions affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Redline - Corporate Logo
ES#:
2739026
Mfg#:
57905
In Stock
$97.99 USD
Free Shipping

Differential Service Kit

ES#3449384 - E46M3DIFSER2KT - Differential Service Kit - All you need in one package for scheduled differential maintenance! With a ECS Magnetic Differential Oil Drain Plug! - Assembled By ECS - BMW

All you need in one package for scheduled differential maintenance! With a ECS Magnetic Differential Oil Drain Plug! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
3449384
Mfg#:
E46M3DIFSER2KT
In Stock
ON SALE!
$274.99

This product was last offered at the strikethrough price on
05-02-2026

$251.21 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Differential Carrier Bushing - Rear

ES#57297 - 33312283384 - Differential Carrier Bushing - Rear - Reduce drivetrain vibrations - Genuine BMW - BMW

Reduce drivetrain vibrations affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
57297
Mfg#:
33312283384
Ships in 1-2 days
3% off MSRP

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

$103.99

This product was last offered at the strikethrough price on
06-08-2026

$100.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Differential Parts

Stock or limited-slip, we stock bearings, repair parts, complete differential units, and approved differential fluids so you can keep sending power to the axles without noise, harshness, or vibration.

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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