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Audi A4 Most Popular Parts

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ES#3659371 - 078121121J - Thermostat Housing (Aluminum) - Aluminum design - Located on the front right of the engine block - URO - Audi Volkswagen

Aluminum design - Located on the front right of the engine block affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
3659371
Mfg#:
078121121J
In Stock
$155.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#1899281 - 06A103171A - Rear Crankshaft Seal - With Flange - Also referred to as the rear main seal - Elring - Audi Volkswagen

Also referred to as the rear main seal affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Elring - Corporate Logo
ES#:
1899281
Mfg#:
06A103171A
In Stock
$51.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2681113 - 003523ECS01A01KT - Front 2-Piece Tru-Float Scalloped Brake Rotors - Pair (345x30) - Direct bolt-on replacement - 27% less weight! - ECS - Audi Porsche

Direct bolt-on replacement - 27% less weight! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Replacement rotors for vehicles with the Stage 2 Big Brake Kit

Brand:
ECS - Corporate Logo
ES#:
2681113
Mfg#:
003523ECS01A01KT
In Stock
ON SALE! SAVE 15%
$1122.99

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

$959.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4413814 - 4M8071006A - Dynamic Floating Center Cap "Spin Wheel Cap" - Set Of 4 (Audi Logo) - Distinctive look with a fascinating presentation. - Genuine Volkswagen Audi - Audi

Distinctive look with a fascinating presentation. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4413814
Mfg#:
4M8071006A
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.

$249.99

This product was last offered at the strikethrough price on
06-03-2026

$239.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3450988 - 024671ECS01 - Front Exact-Fit Stainless Steel Brake Lines - Front set of DOT-compliant lines for an improved pedal feel - ECS - Audi

Front set of DOT-compliant lines for an improved pedal feel affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3450988
Mfg#:
024671ECS01
In Stock
ON SALE!
$109.99

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

$104.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4739011 - DD23-1386 - Rear DD23 "Daily Driver" Ceramic Brake Pad Set - This enthusiast-developed pad offers confident stopping power, very low dust, quiet braking, and a positive initial bite. The perfect choice for your daily-driven Euro! - ECS - Audi

This enthusiast-developed pad offers confident stopping power, very low dust, quiet braking, and a positive initial bite. The perfect choice for your daily-driven Euro! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4739011
Mfg#:
DD23-1386
In Stock
ON SALE! SAVE 20%
$66.99

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

$53.59 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3107602 - 767821KT1 - TurboBack Exhaust System - Non-Resonated - Stainless steel system with high flow catalytic converter - Supersprint - Audi

Stainless steel system with high flow catalytic converter affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Requires Dual exit rear valance

Brand:
Supersprint - Corporate Logo
ES#:
3107602
Mfg#:
767821KT1
Back Ordered
$5721.99 USD
ES#250674 - N90648402 - Hex Bolt - Priced Each - Install new hardware with your new parts. M10x35 - Genuine Volkswagen Audi - Audi Volkswagen

Install new hardware with your new parts. M10x35 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Secures the front bumper brackets supports

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
250674
Mfg#:
N90648402
In Stock
$2.14 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4818497 - 06K121605 - Water Pump Belt - Recommended to be replaced with the water pump - Bremmen Parts - Audi Volkswagen

Recommended to be replaced with the water pump affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818497
Mfg#:
06K121605
In Stock
ON SALE! SAVE 13%
$22.99

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

$19.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2804053 - 001467ECS01KT2 - Conical Seat Stud Conversion Kit - Make wheel changes faster and easier - ECS - Audi Volkswagen

Make wheel changes faster and easier affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For use with conical seat wheels and up to 20mm spacers only

Brand:
ECS - Corporate Logo
ES#:
2804053
Mfg#:
001467ECS01KT2
Back Ordered
ON SALE! SAVE 10%
$197.99

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

$178.19 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement
ES#4362348 - UH016-ICA - Unitronic Intercooler Upgrade 2.0TSI MLB B9 A4/A5/Allroad - Direct OEM replacement kit featuring a massive bar and plate intercooler core made from cast aluminum core and end tanks, proprietary internal fin and louver configuration, and a TIG welded construction. - Unitronic - Audi

Direct OEM replacement kit featuring a massive bar and plate intercooler core made from cast aluminum core and end tanks, proprietary internal fin and louver configuration, and a TIG welded construction. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Unitronic - Corporate Logo
ES#:
4362348
Mfg#:
UH016-ICA
In Stock
$949.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#517842 - DP41518R -  Rear YellowStuff Performance Brake Pad Set - EBC's premium sport street pad that offers high friction levels and heat fade resistance - EBC - Audi Volkswagen

EBC's premium sport street pad that offers high friction levels and heat fade resistance affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
EBC - Corporate Logo
ES#:
517842
Mfg#:
DP41518R
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.

$119.00

This product was last offered at the strikethrough price on
04-17-2026

$113.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3676785 - 8W0133843C - Air Filter - Keep clean air running through your engine - Hengst - Audi
ECS Tuning recommends this product.

Keep clean air running through your engine affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat! Hengst is our preferred OEM filtration supplier!
For vehicles with CYMC engine code only

Brand:
Hengst - Corporate Logo
ES#:
3676785
Mfg#:
8W0133843C
In Stock
ON SALE!
$24.99

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

$22.98 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4020172 - 034-604-7006 - 034Motorsport Wheel Spacer Pair - 10mm - Designed to fit most Audi & Volkswagen vehicles with a 66.5mm center bore and 5x112mm wheel bolt patterns. - 034Motorsport - Audi

Designed to fit most Audi & Volkswagen vehicles with a 66.5mm center bore and 5x112mm wheel bolt patterns. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4020172
Mfg#:
034-604-7006
In Stock
$98.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4766197 - N10554005-23PC - Torx Bolt - Set Of 23 - Install new hardware with your new parts. M6x35 - Bremmen Parts - Audi Volkswagen

Install new hardware with your new parts. M6x35 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Secures valve cover to the cylinder head - 22 required

Brand:
Bremmen Parts - Corporate Logo
ES#:
4766197
Mfg#:
N10554005-23PC
In Stock
ON SALE! SAVE 15%
$50.99

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

$43.34 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3240970 - 023881ecs01KT - 19" Wheel Spacer Flush Fit Kit - Black Bolts - Includes ECS spacers & Black bolts to obtain a flush look on your OE 19" wheels - ECS - Audi

Includes ECS spacers & Black bolts to obtain a flush look on your OE 19" wheels affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3240970
Mfg#:
023881ECS01KT
In Stock
ON SALE!
$265.99

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

$258.01 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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