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Audi B8/B8.5 S4 Quattro 3.0T

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Audi B8/B8.5 S4 Quattro 3.0T Differential Parts

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Complete Rear Differential Mount Insert Kit

ES#2992521 - 008288ecs01KT - Complete Rear Differential Mount Insert Kit - Increase drivetrain rigidity and response! - ECS - Audi Porsche

Increase drivetrain rigidity and response! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
2992521
Mfg#:
008288ECS01KT
In Stock
ON SALE! SAVE 25%
$196.99

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

$147.74 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Motul Gear 300 Manual Transmission / Differential Fluid (75w-90) - 1 Liter

ES#261741 - 317811 - Motul Gear 300 Manual Transmission / Differential Fluid (75w-90) - 1 Liter - Fully synthetic GL-4 / GL-5 gear oil, designed for high performance use - Motul - Audi BMW Volkswagen MINI Porsche

Fully synthetic GL-4 / GL-5 gear oil, designed for high performance use

Brand:
Motul - Corporate Logo
ES#:
261741
Mfg#:
317811
In Stock
10% off MSRP

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

$37.85

This product was last offered at the strikethrough price on
10-04-2026

$34.06 USD
Free Shipping
on orders $49 and up

Complete Drivetrain Mount Insert Kit - Audi B8 A4/S4/Q5

ES#3097986 - 008288ecs01KT1 - Complete Drivetrain Mount Insert Kit - Audi B8 A4/S4/Q5 - Decrease slop; Increase drivetrain rigidity and response! - ECS - Audi
ECS Tuning recommends this product.

Decrease slop; Increase drivetrain rigidity and response! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
3097986
Mfg#:
008288ECS01KT1
In Stock
ON SALE! SAVE 25%
$313.99

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

$235.48 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Synthetic Gear Oil 75w90 - 1 Liter

ES#4766 - G052145S2 - Synthetic Gear Oil 75w90 - 1 Liter - Keep your gears quiet and smooth with new fluid - Genuine Volkswagen Audi - Audi Volkswagen

Keep your gears quiet and smooth with new fluid

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4766
Mfg#:
G052145S2
In Stock
$35.79 USD
Free Shipping
on orders $49 and up

Gear Oil - 1 Liter

ES#465418 - G055145A2 - Gear Oil - 1 Liter - Keep your gears quiet and smooth with new fluid - Genuine Volkswagen Audi - Audi

Keep your gears quiet and smooth with new fluid

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
465418
Mfg#:
G055145A2
In Stock
$136.99 USD
Free Shipping

Drivetrain Mounts Insert Package

ES#2975804 - 034-509-6000 - Drivetrain Mounts Insert Package - Complete mount insert set - 034Motorsport - Audi

Complete mount insert set 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
2975804
Mfg#:
034-509-6000
In Stock
$294.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Transfer Case Oil - priced each

ES#2726939 - G055515A2 - Transfer Case Oil - priced each - For proper maintenance of your transfer case - Genuine Volkswagen Audi - Audi Volkswagen

For proper maintenance of your transfer case For vehicles with Sport Diff Only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2726939
Mfg#:
G055515A2
Ships on Oct 20, 2026
$38.99 USD
Free Shipping
on orders $49 and up

Rear Bushing Differential Mount Insert Kit

ES#2992520 - 008288ECS02 - Rear Bushing Differential Mount Insert Kit - Decrease differential slop for better drivetrain response! - ECS - Audi Porsche

Decrease differential slop for better drivetrain response! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
2992520
Mfg#:
008288ECS02
In Stock
$115.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Magnetic Drain/Fill Plug - Priced Each

ES#2538104 - 000857ECS01A - Magnetic Drain/Fill Plug - Priced Each - Capture harmful particles to prevent wear. M22x1.5 - ECS - Audi Volkswagen Porsche

Capture harmful particles to prevent wear. M22x1.5 10X Entries Into Our F80 M3 Sweepstakes

For vehicles without Torque Vectoring rear differentials

Brand:
ECS - Corporate Logo
ES#:
2538104
Mfg#:
000857ECS01A
Ships on Nov 9, 2026
$40.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front Position Rear Differential Mount Insert Kit

ES#2992519 - 008288ECS01 - Front Position Rear Differential Mount Insert Kit - Decrease differential slop for better drivetrain response! - ECS - Audi Porsche

Decrease differential slop for better drivetrain response! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
2992519
Mfg#:
008288ECS01
In Stock
ON SALE! SAVE 25%
$95.99

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

$71.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Stainless Steel Magnetic Drain/Fill Plug - Priced Each

ES#2992215 - 010974ECS01 - Stainless Steel Magnetic Drain/Fill Plug - Priced Each - Capture harmful particles to prevent wear. M10x1x10 - ECS - Audi Volkswagen

Capture harmful particles to prevent wear. M10x1x10 10X Entries Into Our F80 M3 Sweepstakes

For vehicles with Torque Vectoring rear differentials

Brand:
ECS - Corporate Logo
ES#:
2992215
Mfg#:
010974ECS01
In Stock
ON SALE! SAVE 25%
$35.99

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

$26.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Drain/Fill Plug - Priced Each

ES#469442 - N90281802 - Drain/Fill Plug - Priced Each - Commonly found as a drain or fill plug. M10x1x10 - Genuine Volkswagen Audi - Audi Volkswagen

Commonly found as a drain or fill plug. M10x1x10 For vehicles with Torque Vectoring rear differentials

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
469442
Mfg#:
N90281802
In Stock
$3.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

B8/C7 Center Differential Delete - NO WELDING NEEDED

ES#4375353 - 012535LA01 - B8/C7 Center Differential Delete - NO WELDING NEEDED - Easily allows the removal of center differential when converting your B8 S4 to RWD (rear wheel drive) from Quattro - ECS - Audi

Easily allows the removal of center differential when converting your B8 S4 to RWD (rear wheel drive) from Quattro 10X Entries Into Our F80 M3 Sweepstakes
100% reversible RWD kit when paired with our Axle Delete Plugs (ES4373491) Please make sure via VIN that

Brand:
ECS - Corporate Logo
ES#:
4375353
Mfg#:
012535LA01
In Stock
ON SALE! SAVE 20%
$452.99

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

$362.39 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Drain/Fill Plug - Priced Each

ES#8026 - N10037105 - Drain/Fill Plug - Priced Each - Used in both the drain and fill location. M22x1.5 - Genuine Volkswagen Audi - Audi Volkswagen

Used in both the drain and fill location. M22x1.5 For vehicles without Torque Vectoring rear differentials

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
8026
Mfg#:
N10037105
In Stock
30% off MSRP

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

$14.88

This product was last offered at the strikethrough price on
10-04-2026

$10.49 USD
Free Shipping
on orders $49 and up
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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