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

Audi S4 Differential Service Kits

Sort By
Filter By
Return to Top

Rear Differential Service Kit

ES#4620164 - g055190a2KT - Rear Differential Service Kit - Complete kit with Genuine fluids and drain plugs to service your rear differential - Genuine Volkswagen Audi - Audi

Complete kit with Genuine fluids and drain plugs to service your rear differential

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4620164
Mfg#:
G055190A2KT
Ships on Sep 15, 2026
Auto Notify
$102.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Rear Differential Service Kit

ES#4620204 - G055515A2KT - Rear Differential Service Kit - Complete kit with Genuine fluids and magnetic drain plugs to service your rear differential. - Assembled By ECS - Audi

Complete kit with Genuine fluids and magnetic drain plugs to service your rear differential. 10X Entries Into Our F80 M3 Sweepstakes
For vehicles with sport diff

Brand:
Assembled By ECS - Corporate Logo
ES#:
4620204
Mfg#:
G055515A2KT
Ships on Sep 15, 2026
Auto Notify
ON SALE!
$227.99

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

$211.28 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Rear Differential Service Kit

ES#4620706 - G055190A2-2KT - Rear Differential Service Kit - Complete kit with Genuine fluids and drain plugs to service your rear differential - Genuine Volkswagen Audi - Audi

Complete kit with Genuine fluids and drain plugs to service your rear differential for vehicles without sport diff

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4620706
Mfg#:
G055190A2-2KT
In Stock
$58.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Rear Differential Service Kit

ES#2593469 - 0AR409399BKT - Rear Differential Service Kit - Complete kit with OE fluid to service your rear differential - Genuine Volkswagen Audi - Audi

Complete kit with OE fluid to service your rear differential For vehicles without Torque Vectoring differentials

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2593469
Mfg#:
0AR409399BKT
In Stock
$108.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Rear Differential Service Kit

ES#4620705 - G055190A2-1KT - Rear Differential Service Kit - Complete kit with Genuine fluids and magnetic drain plugs to service your rear differential. - Assembled By ECS - Audi

Complete kit with Genuine fluids and magnetic drain plugs to service your rear differential. 10X Entries Into Our F80 M3 Sweepstakes
for vehicles without sport diff

Brand:
Assembled By ECS - Corporate Logo
ES#:
4620705
Mfg#:
G055190A2-1KT
In Stock
$97.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Rear Differential Service Kit

ES#3659099 - n10037106KT5 - Rear Differential Service Kit - Complete kit with Motul Gear 300 fluid with OEM Drain/Fill plugs to service your rear differential - Assembled By ECS - Audi Volkswagen

Complete kit with Motul Gear 300 fluid with OEM Drain/Fill plugs to service your rear differential 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
3659099
Mfg#:
N10037106KT5
In Stock
ON SALE!
$101.99

This product was last offered at the strikethrough price on
06-16-2026

$94.52 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Rear Differential Service Kit

ES#3660796 - n10037105ktKT7 - Rear Differential Service Kit - Complete kit with Redline 75w90 fluid with OEM drain/fill plugs and seals to service your rear differential. - Assembled By ECS - Audi

Complete kit with Redline 75w90 fluid with OEM drain/fill plugs and seals to service your rear differential. 10X Entries Into Our F80 M3 Sweepstakes
For vehicles without Torque Vectoring differentials

Brand:
Assembled By ECS - Corporate Logo
ES#:
3660796
Mfg#:
N10037105KTKT7
In Stock
ON SALE!
$96.99

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

$95.98 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Rear Differential Service Kit

ES#4158614 - n90281802ktKT1 - Rear Differential Service Kit - Complete kit with Redline 75w90 fluid with ECS stainless steel magnetic plugs and seals to service your rear differential. - Assembled By ECS - Audi Volkswagen

Complete kit with Redline 75w90 fluid with ECS stainless steel magnetic plugs and seals to service your rear differential. 10X Entries Into Our F80 M3 Sweepstakes
For vehicles with Torque Vectoring differentials

Brand:
Assembled By ECS - Corporate Logo
ES#:
4158614
Mfg#:
N90281802KTKT1
In Stock
ON SALE! SAVE 17%
$114.99

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

$95.96 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Rear Differential Service Kit

ES#3660793 - n90281802ktKT - Rear Differential Service Kit - Complete kit with Redline 75w90 fluid with OEM drain/fill plugs and seals to service your rear differential. - Assembled By ECS - Audi Volkswagen

Complete kit with Redline 75w90 fluid with OEM drain/fill plugs and seals to service your rear differential. 10X Entries Into Our F80 M3 Sweepstakes
For vehicles with Torque Vectoring differentials

Brand:
Assembled By ECS - Corporate Logo
ES#:
3660793
Mfg#:
N90281802KTKT
In Stock
ON SALE!
$53.99

This product was last offered at the strikethrough price on
04-24-2026

$52.29 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Rear Differential Service Kit - With Service Tools

ES#4361552 - N90281802KTKT4 - Rear Differential Service Kit - With Service Tools - Complete kit with Redline 75w90 fluid with ECS stainless steel magnetic plugs and seals to service your rear differential. - Assembled By ECS - Audi Volkswagen

Complete kit with Redline 75w90 fluid with ECS stainless steel magnetic plugs and seals to service your rear differential. 10X Entries Into Our F80 M3 Sweepstakes
For vehicles with Torque Vectoring differentials

Brand:
Assembled By ECS - Corporate Logo
ES#:
4361552
Mfg#:
N90281802KTKT4
In Stock
ON SALE! SAVE 17%
$161.99

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

$134.22 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Rear Differential Service Kit - With Service Tools

ES#4361551 - 0AR409399BKT4 - Rear Differential Service Kit - With Service Tools - Complete kit with OE fluid to service your rear differential - Genuine Volkswagen Audi - Audi

Complete kit with OE fluid to service your rear differential For vehicles without Torque Vectoring differentials

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4361551
Mfg#:
0AR409399BKT4
Ships on Sep 11, 2026
$159.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Rear Differential Service Kit - With ECS Magnetic Drain/Fill Plug

ES#2580731 - 016409399BKT2 - Rear Differential Service Kit - With ECS Magnetic Drain/Fill Plug - Complete kit with Redline 75w90 fluid to service your rear differential - Assembled By ECS - Audi

Complete kit with Redline 75w90 fluid to service your rear differential 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
2580731
Mfg#:
016409399BKT2
Ships in 6 Business Days
ON SALE! SAVE 14%
$135.99

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

$116.90 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Rear Differential Service Kit - With ECS Magnetic Drain/Fill Plug

ES#3677577 - g052145s2kt4KT - Rear Differential Service Kit - With ECS Magnetic Drain/Fill Plug - Complete kit with Genuine Audi 75w90 fluid to service your rear differential - Assembled By ECS - Audi

Complete kit with Genuine Audi 75w90 fluid to service your rear differential 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
3677577
Mfg#:
G052145S2KT4KT
Ships in 6 Business Days
ON SALE!
$158.99

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

$149.15 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Rear Differential Service Kit

ES#3659102 - n10037106KT6 - Rear Differential Service Kit - Complete kit with Redline 75w90 fluid with OEM Drain/Fill plugs to service your rear differential - Assembled By ECS - Audi Volkswagen

Complete kit with Redline 75w90 fluid with OEM Drain/Fill plugs to service your rear differential 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
3659102
Mfg#:
N10037106KT6
In Stock
ON SALE!
$86.21 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Rear Differential Leak Repair Kit

ES#2593503 - 02D525596BKT - Rear Differential Leak Repair Kit - Complete kit with OE fluid to service your rear differential - Genuine Volkswagen Audi - Audi Volkswagen

Complete kit with OE fluid to service your rear differential For vehicles with Torque Vectoring differentials

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2593503
Mfg#:
02D525596BKT
Ships in 2 Business Days
$259.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Rear Differential Service Kit

ES#2678603 - N10037106KT3 - Rear Differential Service Kit - Complete kit with Genuine Audi 75w90 fluid to service your rear differential - Genuine Volkswagen Audi - Audi

Complete kit with Genuine Audi 75w90 fluid to service your rear differential

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2678603
Mfg#:
N10037106KT3
Ships in 2 Business Days
$215.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Let us help you find the parts that fit your Audi

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 ECS Tuning is part of Enthusiast Auto Holdings