Shop Our Clearance Sale - Up To 80% Off FREE SHIPPING on Orders $49+ *exclusions apply

Menu

Call Us330-331-2003 ChatLive Chat Text Us!
0 Shopping Cart
Your Vehicle

No Vehicle selected
Please select your vehicle below.

    • Audi
    • BMW
    • Mercedes Benz
    • MINI
    • Porsche
    • Volkswagen

Saved Vehicles

My Vehicles
You currently have no stored vehicles.

Recent Vehicles

Recent Vehicles Manage Vehicles

You currently have no recent vehicles.

We'll automatically keep fully selected vehicles here for your convenience.

Call Us330-331-2003 ChatLive Chat Text Us!
Track My Order View Order History Submit a Return Contact Us Wholesale Information Lifetime Replacement Returns and Warranty Information
0
Call Us330-331-2003 ChatLive Chat Text Us!
Track My Order View Order History Submit a Return Contact Us Wholesale Information Lifetime Replacement Returns and Warranty Information
Cancel
0
Sales & Specials
Enter Your Vehicle
garage-red
Your Vehicle Please tap 'Select' to pick a vehicle
Your Vehicle Please tap 'Select' to pick a vehicle
Select

BMW M3 Differential Parts

Sort By
Filter By
Return to Top

Differential Cover

ES#4879344 - 33112282482 - Differential Cover - If you are experiencing bushing failure OE bushings are not available separately. - URO - BMW

If you are experiencing bushing failure OE bushings are not available separately. 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4879344
Mfg#:
33112282482
In Stock
$241.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

MoS2 Anti Friction Additive For Manual Transmission / Differential

ES#261605 - 2019 - MoS2 Anti Friction Additive For Manual Transmission / Differential - Increase the life of your gear oil, and decrease gearbox noise - Liqui-Moly - Audi BMW Volkswagen Porsche

Increase the life of your gear oil, and decrease gearbox noise 10X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Liqui-Moly - Corporate Logo
ES#:
261605
Mfg#:
2019
In Stock
55% off MSRP

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

$27.99

This product was last offered at the strikethrough price on
09-13-2026

$12.50 USD
Free Shipping
on orders $49 and up

Differential Seal - Rear Axle

ES#4658416 - 33108860348 - Differential Seal - Rear Axle - Prevents fluid leaks, durable material, OEM quality, ensures drivetrain protection. - Genuine BMW - BMW

Prevents fluid leaks, durable material, OEM quality, ensures drivetrain protection.

Brand:
Genuine BMW - Corporate Logo
ES#:
4658416
Mfg#:
33108860348
In Stock
4% off MSRP

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

$96.99

This product was last offered at the strikethrough price on
10-05-2026

$92.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Differential Service Kit

ES#4066747 - F8XDIFFKT4 - Differential Service Kit - All you need in one package for scheduled differential maintenance! With Liqui-Moly Differential fluid - Assembled By ECS - BMW

All you need in one package for scheduled differential maintenance! With Liqui-Moly Differential fluid 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
4066747
Mfg#:
F8XDIFFKT4
In Stock
ON SALE! SAVE 26%
$121.99

This product was last offered at the strikethrough price on
05-29-2026

$89.84 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Rear Differential Service Kit

ES#4815525 - 83222447362MKT - Rear Differential Service Kit - Includes 3 bottles of BMW G4 Hypoid Diff Fluid and new fill & drain plugs - Genuine BMW - BMW

Includes 3 bottles of BMW G4 Hypoid Diff Fluid and new fill & drain plugs

Brand:
Genuine BMW - Corporate Logo
ES#:
4815525
Mfg#:
83222447362MKT
In Stock
$223.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

BMW E46 M3 Rear Diff Rear Mount

ES#4845440 - PFR5-4620H - BMW E46 M3 Rear Diff Rear Mount - This upgrade is often appreciated by those looking to improve the durability and responsiveness of their E46 M3, especially as factory rubber bushings wear out with time and use. - Powerflex - BMW

This upgrade is often appreciated by those looking to improve the durability and responsiveness of their E46 M3, especially as factory rubber bushings wear out with time and use.

Brand:
Powerflex - Corporate Logo
ES#:
4845440
Mfg#:
PFR5-4620H
Ships in 1 Business Day
$147.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

MMX Dual Differential Mount - G8x

MMX locks your G8X differential solid—stronger, sharper, torque-directing, track-ready.

Brand:
MMX Performance - Corporate Logo
ES#:
5341421
Mfg#:
MMR55-1606
Ships in 3 Business Days
$546.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Differential And LSD Tune

ES#4846087 - bm237haKT - Differential And LSD Tune - Upgrade to a better performing LSD also includes tune. - OS Giken - BMW

Upgrade to a better performing LSD also includes tune.

Brand:
OS Giken - Corporate Logo
ES#:
4846087
Mfg#:
BM237HAKT
Back Ordered
$2100.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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! Includes BMW SAF-XJ limited slip differential fluid with FM booster

Brand:
Genuine BMW - Corporate Logo
ES#:
1895208
Mfg#:
E46M3DIFSER
In Stock
$236.99

This product was last offered at the strikethrough price on
09-03-2026

$225.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Helical Limited Slip Differential

ES#2795260 - MF-TRS-05E39 - Helical Limited Slip Differential - Allows for traction at all times by providing the most power to the wheel with more grip. Unlike plate differentials (1,1.5,2-way) helical LSDs can supply different spin rates to each axle, like when cornering. - Team MFactory - BMW

Allows for traction at all times by providing the most power to the wheel with more grip. Unlike plate differentials (1,1.5,2-way) helical LSDs can supply different spin rates to each axle, like when cornering. *Any defects or warranty clams will have to go directly to Team M Factory*

Brand:
Team MFactory - Corporate Logo
ES#:
2795260
Mfg#:
MF-TRS-05E39
Back Ordered
$999.99 USD
Free Shipping
on orders $49 and up

Limited Slip Differential Kit

ES#2917934 - 303091652WKWVTKT - Limited Slip Differential Kit - Put all your power to the ground! - Wavetrac - BMW

Put all your power to the ground!

Brand:
Wavetrac - Corporate Logo
ES#:
2917934
Mfg#:
303091652WKWVTKT
Back Ordered
$1994.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Febi Manual Transmission Fluid (75w-80) - 1 Liter

ES#2876852 - G052911 - Febi Manual Transmission Fluid (75w-80) - 1 Liter - Fully synthetic high performance GL-5 gear oil excellent lubricating properties, high ageing resistance, and high wetting and adhesion properties - Febi - Audi BMW Volkswagen MINI

Fully synthetic high performance GL-5 gear oil excellent lubricating properties, high ageing resistance, and high wetting and adhesion properties We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2876852
Mfg#:
G052911
In Stock
$29.99

This product was last offered at the strikethrough price on
07-10-2026

$22.99 USD
Free Shipping
on orders $49 and up

Differential Service Kit

ES#3449404 - 33111211708KT2 - Differential Service Kit - Everything you need to service your differential, featuring Redline 75w90 GL-5 Gear Oil and ECS Magnetic Differential Oil Drain Plug! - Assembled By ECS - BMW

Everything you need to service your differential, featuring Redline 75w90 GL-5 Gear Oil and ECS Magnetic Differential Oil Drain Plug! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
3449404
Mfg#:
33111211708KT2
In Stock
ON SALE!
$155.99

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

$146.36 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Differential Service Kit

ES#3170081 - f8xdiffKT - Differential Service Kit - All you need in one package for scheduled differential maintenance! With Genuine BMW Motorsport Differential fluid. - Assembled By ECS - BMW

All you need in one package for scheduled differential maintenance! With Genuine BMW Motorsport Differential fluid. 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
3170081
Mfg#:
F8XDIFFKT
In Stock
ON SALE!
$159.99

This product was last offered at the strikethrough price on
09-03-2026

$151.69 USD
Free Shipping
This product is lifetime replacement eligible Partial 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 10X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Liqui-Moly - Corporate Logo
ES#:
3097303
Mfg#:
20010
In Stock
39% off MSRP

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

$20.99

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

$12.79 USD
Free Shipping
on orders $49 and up

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.

Let us help you find the parts that fit your BMW

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

Terms of Use Privacy Policy Your Privacy Choices Cookie Policy ECS Tuning is part of Enthusiast Auto Holdings