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Audi B6 A4 Quattro 1.8T

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Audi B6 A4 Quattro 1.8T Differential Parts

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Driveshaft Flange Seal

ES#2598103 - 01A409400B - Driveshaft Flange Seal - Seals the propeller shaft flange to the transmission differential - Corteco - Audi Volkswagen

Seals the propeller shaft flange to the transmission differential affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Corteco - Corporate Logo
ES#:
2598103
Mfg#:
01A409400B
In Stock
$10.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear Differential Mount

ES#437299 - 8E0599125J - Rear Differential Mount - Used to secure the rear differential to the subframe - Genuine Volkswagen Audi - Audi

Used to secure the rear differential to the subframe affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
437299
Mfg#:
8E0599125J
Ships in 9 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.

$213.99

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

$195.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Driveshaft Flange Seal

ES#2622569 - 857525275 - Driveshaft Flange Seal - Seals the propeller shaft flange to the rear differential - Original Equipment Supplier - Audi Volkswagen

Seals the propeller shaft flange to the rear differential affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Original Equipment Supplier - Corporate Logo
ES#:
2622569
Mfg#:
857525275
Ships in 1-2 days
$186.99

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

$180.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Axle Flange Seal - Priced Each

ES#266849 - 016409399B - Axle Flange Seal - Priced Each - Fits the left and right side - Genuine Volkswagen Audi - Audi Volkswagen

Fits the left and right side affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
266849
Mfg#:
016409399B
Ships in 3 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.

$61.99

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

$57.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear Diff Front Mount Bushings

ES#2804683 - PFR3-270B - Rear Diff Front Mount Bushings - Helps maintain proper suspension geometry for improved handling and less rear steer feeling - Powerflex Black Series - Audi

Helps maintain proper suspension geometry for improved handling and less �rear steer� feeling affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Powerflex Black Series - Corporate Logo
ES#:
2804683
Mfg#:
PFR3-270B
Ships in 2 Business Days
$55.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Driveshaft Flange Seal

ES#2803722 - 018409399B - Driveshaft Flange Seal - Seals the propeller shaft flange to the transmission differential - Rein - Audi Volkswagen

Seals the propeller shaft flange to the transmission differential affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
For vehicles with 01V 409 809 flange part number

Brand:
Rein - Corporate Logo
ES#:
2803722
Mfg#:
018409399B
In Stock
ON SALE!
$12.99

This product was last offered at the strikethrough price on
06-29-2026

$12.34 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 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 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#:
3677577
Mfg#:
G052145S2KT4KT
In Stock
ON SALE!
$158.99

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

$145.53 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Tapered Roller Bearing

ES#267217 - 01E409123 - Tapered Roller Bearing - Keep your differential free from noise - Genuine Volkswagen Audi - Audi

Keep your differential free from noise affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fits right side

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
267217
Mfg#:
01E409123
Special Order: No Guaranteed ETA
7% off MSRP

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

$148.99

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

$138.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Driveshaft Flange Seal

ES#423940 - 857525275 - Driveshaft Flange Seal - Seals the propeller shaft flange to the rear differential - Genuine Volkswagen Audi - Audi Volkswagen

Seals the propeller shaft flange to the rear differential affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
423940
Mfg#:
857525275
Ships in 3 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.

$139.99

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

$130.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Axle Flange Seal - Right

ES#268105 - 01V409399 - Axle Flange Seal - Right - Seals the connection between the axle flange and transmission - Genuine Volkswagen Audi - Audi Volkswagen

Seals the connection between the axle flange and transmission affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
268105
Mfg#:
01V409399
Ships in 3 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.

$133.99

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

$124.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Tapered Roller Bearing - Left

ES#268092 - 01V409144 - Tapered Roller Bearing - Left - Keep your differential free from noise - Genuine Volkswagen Audi - Audi

Keep your differential free from noise affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Automatic transmission vehicles only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
268092
Mfg#:
01V409144
Ships in 3 Business Days
$164.99

This product was last offered at the strikethrough price on
02-26-2026

$117.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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

ES#2538236 - 016409399BKT - Rear Differential Service Kit - With ECS Magnetic Drain/Fill Plug - Complete kit with Motul Gear 300 fluid to service your rear differential - Assembled By ECS - Audi Volkswagen

Complete kit with Motul Gear 300 fluid to service your rear differential 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#:
2538236
Mfg#:
016409399BKT
In Stock
ON SALE!
$110.99

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

$106.62 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Tapered Roller Bearing

ES#290474 - 113517185B - Tapered Roller Bearing - Keep your differential free from noise - Genuine Volkswagen Audi - Audi Volkswagen

Keep your differential free from noise affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fits left side

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
290474
Mfg#:
113517185B
Ships in 5 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.

$109.99

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

$102.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Axle Flange Seal - Left

ES#2951334 - 01L409399 - Axle Flange Seal - Left - Seals the connection between the axle flange and transmission - SKF - Audi Volkswagen

Seals the connection between the axle flange and transmission affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
SKF - Corporate Logo
ES#:
2951334
Mfg#:
01L409399
In Stock at Vendor
$16.42 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Axle Flange Seal - Left

ES#5812 - 01L409399 - Axle Flange Seal - Left - Seals the connection between the axle flange and transmission - Genuine Volkswagen Audi - Audi Volkswagen

Seals the connection between the axle flange and transmission affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
5812
Mfg#:
01L409399
Ships in 3 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.

$104.99

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

$97.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Tapered Roller Bearing - Priced Each

ES#4352288 - 01X409123 - Tapered Roller Bearing - Priced Each - Keep your differential free from noise - 50x80x20 - Timken - Audi Porsche

Keep your differential free from noise - 50x80x20 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fits left side - Manual transmission vehicles only

Brand:
Timken - Corporate Logo
ES#:
4352288
Mfg#:
01X409123
In Stock
Limited Qty Sale
$28.99

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

$25.99 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.

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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