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Audi A4 Most Popular Parts

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3" Downpipe

ES#2951864 - CTS-EXH-TDP-0005 - 3" Downpipe - T304 Stainless down pipe that installs directly after the factory catalytic converter - CTS - Audi

T304 Stainless down pipe that installs directly after the factory catalytic converter

Brand:
CTS - Corporate Logo
ES#:
2951864
Mfg#:
CTS-EXH-TDP-0005
Ships in 8 Business Days
ON SALE! SAVE 15%
$399.99

This product was last offered at the strikethrough price on
09-29-2026

$339.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

High Flow Aluminum Charge Pipe Set

ES#4003757 - CTS-IT-291 - High Flow Aluminum Charge Pipe Set - 2.5" mandrel-bent aluminum turbo outlet and throttle pipe to replace your restrictive factory pieces - CTS - Audi

2.5" mandrel-bent aluminum turbo outlet and throttle pipe to replace your restrictive factory pieces Fits up to the 2019 Model Year

Brand:
CTS - Corporate Logo
ES#:
4003757
Mfg#:
CTS-IT-291
In Stock
ON SALE! SAVE 15%
$199.99

This product was last offered at the strikethrough price on
09-29-2026

$169.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Ball Seat Wheel Bolt - 14x1.5x40mm - Priced Per Pair

ES#4164435 - S17D40R13ZNNI2 - Ball Seat Wheel Bolt - 14x1.5x40mm - 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#:
4164435
Mfg#:
S17D40R13ZNNI2
In Stock
$12.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Torx Bolt - Set Of 23

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 10X Entries Into Our F80 M3 Sweepstakes

Secures valve cover to the cylinder head - 22 required

Brand:
Bremmen Parts - Corporate Logo
ES#:
4766197
Mfg#:
N10554005-23PC
In Stock
$52.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Water Pump Module

ES#4391009 - 06H121026DR - Water Pump Module - Includes the thermostat, temp sensor, and gasket - URO - Audi Volkswagen

Includes the thermostat, temp sensor, and gasket 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4391009
Mfg#:
06H121026DR
In Stock
$159.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front Axle Assembly - Priced Each

ES#4339633 - NCV23025 - Front Axle Assembly - Priced Each - Includes inner and outer CV joints - GSP North America - Audi

Includes inner and outer CV joints For vehicles with DSG transmission only

Brand:
GSP North America - Corporate Logo
ES#:
4339633
Mfg#:
NCV23025
Back Ordered
$216.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Ignition Service Kit

ES#2561324 - 06C905115M1KT - Ignition Service Kit - Includes four OE red coil packs and four NGK copper core spark plugs - Assembled By ECS - Audi Volkswagen

Includes four OE red coil packs and four NGK copper core spark plugs 10X Entries Into Our F80 M3 Sweepstakes USE CODE KIT15 IN CART FOR BEST PRICE

Brand:
Assembled By ECS - Corporate Logo
ES#:
2561324
Mfg#:
06C905115M1KT
Ships in 3 Business Days
$158.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV)

ES#4768292 - 06F129101N - Pressure Control Valve (PCV) - Also called the "breather valve" or "oil separator" - Hengst - Audi Volkswagen
ECS Tuning recommends this product.

Also called the "breather valve" or "oil separator" 5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
Up to production date 12/16/2005

Brand:
Hengst - Corporate Logo
ES#:
4768292
Mfg#:
06F129101N
Ships in 7 Business Days
$26.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Pan Replacement Kit

ES#3184321 - 06E103604KKT - Oil Pan Replacement Kit - Everything required to replace your leaking pan, including the oil change - Assembled By ECS - Audi

Everything required to replace your leaking pan, including the oil change 10X Entries Into Our F80 M3 Sweepstakes USE CODE KIT15 IN CART FOR BEST PRICE

Brand:
Assembled By ECS - Corporate Logo
ES#:
3184321
Mfg#:
06E103604KKT
In Stock
$329.99

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

$315.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

High Pressure Fuel Pump upgraded unit

ES#2794058 - IEFUVC3 - High Pressure Fuel Pump upgraded unit - New fuel pump with IE internal upgrades already installed - Integrated Engineering - Audi Volkswagen

New fuel pump with IE internal upgrades already installed

Brand:
Integrated Engineering - Corporate Logo
ES#:
2794058
Mfg#:
IEFUVC3
In Stock
$1049.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Carbon Fiber Rear Diffuser - Audi B8 A4/S4 Pre-facelift

ES#3200799 - 021532ECS01A - Carbon Fiber Rear Diffuser - Audi B8 A4/S4 Pre-facelift - Hand-laid carbon fiber to upgrade your exterior styling - ECS - Audi

Hand-laid 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 up to the 2012 model year

Brand:
ECS - Corporate Logo
ES#:
3200799
Mfg#:
021532ECS01A
In Stock
Limited Qty Sale
$1019.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B8 Sport Rear Shock Kit

ES#4430379 - 24-145992KT - B8 Sport Rear Shock Kit - Fits the left and right side - Bilstein - Audi

Fits the left and right side 10X Entries Into Our F80 M3 Sweepstakes

Vehicles equipped with Electronic Damping Control (EDC) will lose shock dampening and receive a system error code

Brand:
Bilstein - Corporate Logo
ES#:
4430379
Mfg#:
24-145992KT
In Stock
$310.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

D1S 5000K XB Xenon Bulb - Pair

ES#4212774 - MM.N.073 - D1S 5000K XB Xenon Bulb - Pair - Quality replacement xenon bulbs from Morimoto - Morimoto - Audi BMW Volkswagen Mercedes Benz MINI

Quality replacement xenon bulbs from Morimoto

Brand:
Morimoto - Corporate Logo
ES#:
4212774
Mfg#:
MM.N.073
In Stock
15% off MSRP

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

$112.00

This product was last offered at the strikethrough price on
11-05-2026

$94.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Flywheel Bolt - Set of 8

ES#2592573 - N90665001 - Flywheel Bolt - Set of 8 - Secures the flywheel to crankshaft. M10X1X22.3 - Vaico - Audi Volkswagen

Secures the flywheel to crankshaft. M10X1X22.3 We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
2592573
Mfg#:
N90665001
In Stock
$16.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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