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Audi A4 Most Popular Parts

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Performance Rear Differential Mount - Audi B5 A4/S4

ES#2730494 - 003248ECS01A - Performance Rear Differential Mount - Audi B5 A4/S4 - Increase drivetrain rigidity and response! - ECS - Audi

Increase drivetrain rigidity and response! 10X Entries Into Our F80 M3 Sweepstakes USE CODE ECS20 IN CART FOR BEST PRICE

Brand:
ECS - Corporate Logo
ES#:
2730494
Mfg#:
003248ECS01A
In Stock
$243.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Ball Seat Wheel Bolt - 14x1.5x45mm - Priced Per Pair

ES#4159275 - S17D45R13ZNNI-2 - Ball Seat Wheel Bolt - 14x1.5x45mm - 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 Into Our F80 M3 Sweepstakes USE CODE ECS20 IN CART FOR BEST PRICE

Brand:
ECS - Corporate Logo
ES#:
4159275
Mfg#:
S17D45R13ZNNI-2
In Stock
$12.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Ignition Coil - Priced Each

ES#4145072 - 06H905110L - Ignition Coil - Priced Each - Keep your engine running smooth - Bosch - Audi Volkswagen

Keep your engine running smooth We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
4145072
Mfg#:
06H905110L
In Stock
$45.99

This product was last offered at the strikethrough price on
09-08-2026

$45.15 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Billet Engine Oil Dipstick - Black Anodized

ES#3138258 - 018641ECS01-02 - Billet Engine Oil Dipstick - Black Anodized - A more durable and aesthetically pleasing addition to your engine bay - ECS - Audi

A more durable and aesthetically pleasing addition to your engine bay 10X Entries Into Our F80 M3 Sweepstakes USE CODE ECS20 IN CART FOR BEST PRICE

Up to the 2012 model year

Brand:
ECS - Corporate Logo
ES#:
3138258
Mfg#:
018641ECS01-02
In Stock
$99.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Special Active Shocks & Struts Kit

ES#3564213 - 82451264KT - Special Active Shocks & Struts Kit - Superior handling without compromising ride quality - Koni - Audi

Superior handling without compromising ride quality For vehicles with S-line suspension

Brand:
Koni - Corporate Logo
ES#:
3564213
Mfg#:
82451264KT
In Stock
ON SALE! SAVE 20%
$728.99

This product was last offered at the strikethrough price on
08-26-2026

$581.71 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

18" A01 Flow Formed Wheels - Set Of Four

ES#4045233 - whl00017KT - 18" A01 Flow Formed Wheels - Set Of Four - 18"x8.5", ET45, 5x112, 18.5lbs - Satin Black Finish - APR - Audi Volkswagen MINI

18"x8.5", ET45, 5x112, 18.5lbs - Satin Black Finish Call In Or Chat For Best Price!

Brand:
APR - Corporate Logo
ES#:
4045233
Mfg#:
WHL00017KT
In Stock
$1479.80 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Timing Belt

ES#2569728 - T297RB - Timing Belt - 300% stronger than standard timing belts! - GatesRacing - Audi Volkswagen

300% stronger than standard timing belts!

Brand:
GatesRacing - Corporate Logo
ES#:
2569728
Mfg#:
T297RB
In Stock
$492.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

0w-30 Top Tec 4210 Synthetic Engine Oil - 1 Liter

ES#4339885 - 22156 - 0w-30 Top Tec 4210 Synthetic Engine Oil - 1 Liter - Fully synthetic, low-viscosity and low-SAPS motor oil developed for VAG 504.00/507.00 and BMW Longlife-04 specifications - Liqui-Moly - Audi BMW Volkswagen Porsche

Fully synthetic, low-viscosity and low-SAPS motor oil developed for VAG 504.00/507.00 and BMW Longlife-04 specifications 10X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Liqui-Moly - Corporate Logo
ES#:
4339885
Mfg#:
22156
In Stock
46% off MSRP

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

$25.99

This product was last offered at the strikethrough price on
11-06-2026

$13.99 USD
Free Shipping
on orders $49 and up

Wheel Hub - Priced Each

ES#4818110 - 8K0407613B - Wheel Hub - Priced Each - Does not include wheel bearing - Bremmen Parts - Audi

Does not include wheel bearing 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818110
Mfg#:
8K0407613B
Ships on Dec 28, 2026
$87.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Valve Cover Bolt - Set Of 14

ES#4765688 - 06B103831J-14 - Valve Cover Bolt - Set Of 14 - Full set used to secure the valve cover to the cylinder head - Bremmen Parts - Audi Volkswagen

Full set used to secure the valve cover to the cylinder head 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
4765688
Mfg#:
06B103831J-14
In Stock
$90.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi B8.5 S4 / A4 S-Line Forged Carbon Fiber Rear Diffuser

ES#4490851 - 018359ECS01-02 - Audi B8.5 S4 / A4 S-Line Forged Carbon Fiber Rear Diffuser - Hand-laid chopped carbon fiber to upgrade your exterior styling - ECS - Audi

Hand-laid chopped carbon fiber to upgrade your exterior styling 10X Entries Into Our F80 M3 Sweepstakes USE CODE ECS20 IN CART FOR BEST PRICE

Fits S-Line bumpers

Brand:
ECS - Corporate Logo
ES#:
4490851
Mfg#:
018359ECS01-02
In Stock
Limited Qty Sale
$1018.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

AWE ColdFront Intercooler - Audi B9 S4/S5 3.0T

ES#4044047 - 4510-11060 - AWE ColdFront Intercooler - Audi B9 S4/S5 3.0T - Offers a 130% increase in frontal surface area and a massive 83% increase in volume over the factory B9 intercooler - AWE - Audi

Offers a 130% increase in frontal surface area and a massive 83% increase in volume over the factory B9 intercooler 2X Entries Into Our F80 M3 Sweepstakes

Brand:
AWE - Corporate Logo
ES#:
4044047
Mfg#:
4510-11060
In Stock
5% off MSRP

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

$994.99

This product was last offered at the strikethrough price on
11-06-2026

$945.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

K04 Turbo Conversion Kit (Longitudinal)

ES#3247391 - HVA-240-HW-LONG - K04 Turbo Conversion Kit (Longitudinal) - Developed on the Track, Adapted for the Street. Comprehensive kit to see up to 355HP / 347TQ from your 2.0T - HPA Motorsports - Audi

Developed on the Track, Adapted for the Street. Comprehensive kit to see up to 355HP / 347TQ from your 2.0T For the Gen 1 or 2 EA888 and EA113 engines Only

Brand:
HPA Motorsports - Corporate Logo
ES#:
3247391
Mfg#:
HVA-240-HW-LONG
Ships on Jan 8, 2027
$1649.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Silicone Turbo Inlet Hose - Audi B8 A4/A5 2.0T

ES#2707642 - 000672ECS01A - Silicone Turbo Inlet Hose - Audi B8 A4/A5 2.0T - Flexible silicone smooths the intake tract & hinders collapsing. The ultimate in durability! - ECS - Audi

Flexible silicone smooths the intake tract & hinders collapsing. The ultimate in durability! 10X Entries Into Our F80 M3 Sweepstakes USE CODE ECS20 IN CART FOR BEST PRICE

Brand:
ECS - Corporate Logo
ES#:
2707642
Mfg#:
000672ECS01A
In Stock
$106.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

PCV Solution Kit - with Boost Cap

ES#2794147 - IEBAVC17 - PCV Solution Kit - with Boost Cap - Delete your failure-prone PCV valve - Integrated Engineering - Audi Volkswagen

Delete your failure-prone PCV valve
For vehicles with FSI engines only

Brand:
Integrated Engineering - Corporate Logo
ES#:
2794147
Mfg#:
IEBAVC17
In Stock
$117.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Genuine Audi S-Tronic 7-Speed Transmission Assembly (0B5 / DL501)

Completely restore your vehicle's drivetrain with a brand new, factory original 7-speed dual-clutch transmission. B8.5 Model Year 2016 Only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3708317
Mfg#:
0B5300062C008
Ships in 9 Business Days
3% off MSRP

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

$13512.99

This product was last offered at the strikethrough price on
10-26-2026

$13052.99 USD
This product is lifetime replacement eligible Lifetime Replacement

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