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Audi A4 Differential Parts

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Tapered Roller Bearing - Priced Each

ES#1357033 - 01X409123 - Tapered Roller Bearing - Priced Each - Keep your differential free from noise - 50x80x20 - Genuine Porsche - Audi Porsche

Keep your differential free from noise - 50x80x20 Fits left side - Manual transmission vehicles only

Brand:
Genuine Porsche - Corporate Logo
ES#:
1357033
Mfg#:
01X409123
Ships in 3 Business Days
$117.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Axle Flange Seal - Priced Each

ES#3464831 - 0AR409399B - Axle Flange Seal - Priced Each - Fits the left & right side - Corteco - Audi

Fits the left & right side Seals the left & right rear axle flange for vehicle with basic differentials

Brand:
Corteco - Corporate Logo
ES#:
3464831
Mfg#:
0AR409399B
In Stock
$12.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear Diff Rear Bushing Inserts - Street

ES#4869773 - PFR3-743 - Rear Diff Rear Bushing Inserts - Street - A performance insert with an increased stiffness - Powerflex - Audi

A performance insert with an increased stiffness

Brand:
Powerflex - Corporate Logo
ES#:
4869773
Mfg#:
PFR3-743
Ships in 1 Business Day
$85.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Driveshaft Flange Seal

ES#11957 - 01V409399A - Driveshaft Flange Seal - Seals the propeller shaft flange to the transmission differential - Genuine Volkswagen Audi - Audi

Seals the propeller shaft flange to the transmission differential For vehicles with 01V 409 809A flange part number

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
11957
Mfg#:
01V409399A
Ships in 1-2 days
$168.99

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

$163.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Axle Flange Seal - Priced Each

ES#2707342 - 02D525596F - Axle Flange Seal - Priced Each - Stop leaks from your differential - Genuine Volkswagen Audi - Audi Volkswagen

Stop leaks from your differential Fits the left & right side for vehicles with Torque Vectoring differentials

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2707342
Mfg#:
02D525596F
Ships in 2 Business Days
7% off MSRP

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

$116.99

This product was last offered at the strikethrough price on
07-18-2026

$108.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Carrier Mount Bushing - Priced Each

ES#3150190 - 4M0599257R - Rear Carrier Mount Bushing - Priced Each - Fits left and right side - Genuine Volkswagen Audi - Audi

Fits left and right side

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3150190
Mfg#:
4M0599257R
Ships in 3 Business Days
8% off MSRP

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

$58.99

This product was last offered at the strikethrough price on
07-18-2026

$53.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Axle Flange Seal - Priced Each

ES#1894525 - 0AR409399B - Axle Flange Seal - Priced Each - Fits the left & right side - Genuine Volkswagen Audi - Audi

Fits the left & right side Seals the left & right rear axle flange for vehicle with basic differentials

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
1894525
Mfg#:
0AR409399B
In Stock
24% off MSRP

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

$34.18

This product was last offered at the strikethrough price on
07-18-2026

$25.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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

ES#2593489 - 0AR409399BKT1 - Rear Differential Service Kit - With ECS Magnetic Drain/Fill Plugs - Complete kit with Redline 75w90 GL-5 fluid to service your rear differential - Assembled By ECS - Audi

Complete kit with Redline 75w90 GL-5 fluid to service your rear differential 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles without Torque Vectoring differentials

Brand:
Assembled By ECS - Corporate Logo
ES#:
2593489
Mfg#:
0AR409399BKT1
Ships on Oct 5, 2026
Auto Notify
ON SALE! SAVE 22%
$128.65

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

$100.46 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Tapered Roller Bearing - Priced Each

ES#4680245 - 002517185M - Tapered Roller Bearing - Priced Each - Keep your differential free from noise - 46x75x18 - NTN - Audi Volkswagen

Keep your differential free from noise - 46x75x18 Fits right side - Manual transmission vehicles only

Brand:
NTN - Corporate Logo
ES#:
4680245
Mfg#:
002517185M
Ships in 1-2 days
$66.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime 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

Driveshaft Flange Seal

ES#266988 - 018409399B - Driveshaft Flange Seal - Seals the propeller shaft flange to the transmission differential - Genuine Volkswagen Audi - Audi Volkswagen

Seals the propeller shaft flange to the transmission differential

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
266988
Mfg#:
018409399B
Ships in 2 Business Days
6% off MSRP

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

$63.99

This product was last offered at the strikethrough price on
07-18-2026

$59.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Axle Flange Seal - Priced Each

ES#271760 - 02D409399 - Axle Flange Seal - Priced Each - Fits the left and right side - Genuine Volkswagen Audi - Audi Volkswagen

Fits the left and right side CVT transmissions only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
271760
Mfg#:
02D409399
Ships in 2 Business Days
6% off MSRP

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

$63.99

This product was last offered at the strikethrough price on
07-18-2026

$59.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear Differential Lower Mount Bushing Insert - Street

ES#4869768 - PFR3-741 - Rear Differential Lower Mount Bushing Insert - Street - This is an insert to fit into the original bushing to minimize the movement of the diff under acceleration. - Powerflex - Audi

This is an insert to fit into the original bushing to minimize the movement of the diff under acceleration. From production date 4/28/2009

Brand:
Powerflex - Corporate Logo
ES#:
4869768
Mfg#:
PFR3-741
Ships in 1 Business Day
$55.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime 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 1-2 days
$215.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Rear Diff Front Mount Bushings

ES#2778158 - PFR3-270 - Rear Diff Front Mount Bushings - Helps maintain proper suspension geometry for improved handling and less rear steer feeling - Powerflex - Audi

Helps maintain proper suspension geometry for improved handling and less rear steer feeling

Brand:
Powerflex - Corporate Logo
ES#:
2778158
Mfg#:
PFR3-270
Ships in 1 Business Day
$51.99 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.

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.

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