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Audi A4 Most Popular Parts

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Thermostat Replacement Kit With ECS Billet Aluminum J-Plug

ES#2777024 - 06B121111KKT3 - Thermostat Replacement Kit With ECS Billet Aluminum J-Plug - Includes ECS' upgraded J-Plug, a new thermostat, o-ring, and hardware - Assembled By ECS - Audi

Includes ECS' upgraded J-Plug, a new thermostat, o-ring, and hardware 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2777024
Mfg#:
06B121111KKT3
In Stock
ON SALE! SAVE 24%
$159.99

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

$122.20 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Timing chain - upper

ES#4172155 - 06K109158BP - Timing chain - upper - Stop stretched out chains from creating noise - Genuine Volkswagen Audi - Audi Volkswagen

Stop stretched out chains from creating noise

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4172155
Mfg#:
06K109158BP
In Stock
2% off MSRP

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

$244.99

This product was last offered at the strikethrough price on
03-25-2026

$238.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

K04 0015 Turbocharger

ES#3364 - 058145703KO4 - K04 0015 Turbocharger - Great bolt on performance upgrade that can be used with or without specific programming - BorgWarner - Audi Volkswagen

Great bolt on performance upgrade that can be used with or without specific programming

Brand:
BorgWarner - Corporate Logo
ES#:
3364
Mfg#:
058145703KO4
Back Ordered
$1831.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance valve spring/retainer kit

ES#2794712 - IEVTVA2 - Performance valve spring/retainer kit - High quality performance valve spings and titanium retainers - Integrated Engineering - Audi Volkswagen

High quality performance valve spings and titanium retainers 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Integrated Engineering - Corporate Logo
ES#:
2794712
Mfg#:
IEVTVA2
Ships in 1 Business Day
$784.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

CTS Billet Valve Cover

ES#4042976 - CTS-HW-250 - CTS Billet Valve Cover - Direct replacement for your plastic factory valve cover. - CTS - Audi Volkswagen

Direct replacement for your plastic factory valve cover. For vehicles with FSI engine only. Oil catch can required.

Brand:
CTS - Corporate Logo
ES#:
4042976
Mfg#:
CTS-HW-250
Ships in 8 Business Days
ON SALE! SAVE 15%
$379.99

This product was last offered at the strikethrough price on
07-10-2026

$322.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Wheel Spacers - 15mm (Pair)

ES#250709 - 002403ECS03A15KT - ECS Wheel Spacers - 15mm (Pair) - Exclusively built for your 57.1mm centerbore VW/Audi - ECS - Audi Volkswagen

Exclusively built for your 57.1mm centerbore VW/Audi 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
250709
Mfg#:
002403ECS03A15KT
In Stock
ON SALE! SAVE 20%
$131.99

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

$105.59 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Timing Chain Tensioner - Lower

ES#4668864 - 06H109467BA - Timing Chain Tensioner - Lower - Keeps your timing chain from becoming loose - Bremmen Parts - Audi Volkswagen

Keeps your timing chain from becoming loose 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4668864
Mfg#:
06H109467BA
In Stock
ON SALE! SAVE 17%
$76.99

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

$63.74 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front Cross Drilled UV Coated Brake Rotors - Pair (345x30)

ES#4491561 - 8k0615301kxKT - Front Cross Drilled UV Coated Brake Rotors - Pair (345x30) - Features Brembo's special UV paint treatment that guarantees superior corrosion resistance. - Brembo - Audi

Features Brembo's special UV paint treatment that guarantees superior corrosion resistance. 2X Entries For Our 25th Anniversary Sweepstakes!
Replacement rotors for vehicles with the Stage 2 Big Brake Kit

Brand:
Brembo - Corporate Logo
ES#:
4491561
Mfg#:
8K0615301KXKT
In Stock
$341.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Torx Head Fitted Screw - Priced Each

ES#471980 - N91130401 - Torx Head Fitted Screw - Priced Each - Attaches guide rails to the block, see description for more details. M8x12x27 - Genuine Volkswagen Audi - Audi Volkswagen

Attaches guide rails to the block, see description for more details. M8x12x27 Used to attach guide rails

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
471980
Mfg#:
N91130401
In Stock
3% off MSRP

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

$5.36

This product was last offered at the strikethrough price on
07-22-2026

$5.20 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

19" Style 084 Wheels - Set Of Four

ES#2823120 - 084-1KT - 19" Style 084 Wheels - Set Of Four - 19x9.5 ET40 66.6CB 5x112 - Gunmetal - Alzor - Audi

19x9.5 ET40 66.6CB 5x112 - Gunmetal 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Alzor - Corporate Logo
ES#:
2823120
Mfg#:
084-1KT
In Stock
ON SALE! SAVE 40%
$1300.00

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

$779.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 A4/A5 ECU Cover - Matte Black

ES#3739793 - 028799ECS01 - Audi B9 A4/A5 ECU Cover - Matte Black - Compliment your engine bay and hide away the exposed ECU - ECS - Audi

Compliment your engine bay and hide away the exposed ECU 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3739793
Mfg#:
028799ECS01
In Stock
ON SALE! SAVE 25%
$103.99

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

$77.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Ball Seat Wheel Bolt - 14x1.5x47mm - Priced Per Pair

ES#4164433 - S17D47R13ZNNI2 - Ball Seat Wheel Bolt - 14x1.5x47mm - Priced Per Pair - Black zinc coated wheel bolts made specifically for OE wheels - ECS - Audi Volkswagen

Black zinc coated wheel bolts made specifically for OE wheels 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4164433
Mfg#:
S17D47R13ZNNI2
In Stock
ON SALE! SAVE 25%
$13.99

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

$10.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Power Stop Z23 Evolution Sport Rear Brake Kit (300mm)

ES#3157083 - K4745 - Power Stop Z23 Evolution Sport Rear Brake Kit (300mm) - A performance rear axle upgrade package featuring precision cross-drilled & slotted rotors and low-dust carbon-fiber ceramic pads. - Power Stop - Audi

A performance rear axle upgrade package featuring precision cross-drilled & slotted rotors and low-dust carbon-fiber ceramic pads.

Brand:
Power Stop - Corporate Logo
ES#:
3157083
Mfg#:
K4745
In Stock
$187.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Fuel Pressure Regulator - 4 Bar

ES#1073 - 0280160575sj - Fuel Pressure Regulator - 4 Bar - Commonly used in performance applications - Bosch - Audi Volkswagen

Commonly used in performance applications 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
1073
Mfg#:
0280160575SJ
In Stock
$52.99

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

$45.74 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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