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Audi B9 A4 FWD 2.0T

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Audi B9 A4 FWD 2.0T Engine Parts & Accessories

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Billet Fuel Cap Cover - Clear Anodized

ES#3677062 - 022506ECS0101 - Billet Fuel Cap Cover - Clear Anodized - Upgrade your gas cap to our gorgeous CNC-machined aluminum cover. Easily installs over your existing cap! - ECS - Audi Volkswagen Porsche

Upgrade your gas cap to our gorgeous CNC-machined aluminum cover. Easily installs over your existing cap! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
3677062
Mfg#:
022506ECS0101
In Stock
ON SALE!
$137.99

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

$133.85 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank Bypass Line

ES#3086863 - 8W0121081AN - Coolant Expansion Tank Bypass Line - A line that recycles overflown fluid back into the system - Genuine Volkswagen Audi - Audi

A line that recycles overflown fluid back into the system

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3086863
Mfg#:
8W0121081AN
In Stock
9% off MSRP

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

$76.67

This product was last offered at the strikethrough price on
08-27-2026

$69.40 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

X34 Carbon Fiber Intake System

ES#4500832 - 034-108-1051 - X34 Carbon Fiber Intake System - Delivers improved power, sound, and acceleration in a clean OEM+ package. - 034Motorsport - Audi

Delivers improved power, sound, and acceleration in a clean OEM+ package. 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
4500832
Mfg#:
034-108-1051
In Stock
ON SALE! SAVE 14%
$833.00

This product was last offered at the strikethrough price on
08-17-2026

$712.22 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

034Motorsport High Output Ignition Coil - Red - Priced Each

ES#4620394 - 034-107-2012-RED - 034Motorsport High Output Ignition Coil - Red - Priced Each - Plug-and-play upgraded coil pack featuring a CNC-machined heat sink for better heat dissipation - 034Motorsport - Audi Volkswagen Porsche

Plug-and-play upgraded coil pack featuring a CNC-machined heat sink for better heat dissipation 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
4620394
Mfg#:
034-107-2012-RED
In Stock
ON SALE! SAVE 14%
$63.00

This product was last offered at the strikethrough price on
08-17-2026

$53.87 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Timing chain - lower

ES#3470898 - 06K109158BS - Timing chain - lower - 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#:
3470898
Mfg#:
06K109158BS
In Stock
10% 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
08-27-2026

$219.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

1.8T/2.0T Gen3 Diverter Valve Upgrade - Red

ES#4839641 - 013907la01-01KT - 1.8T/2.0T Gen3 Diverter Valve Upgrade - Red - The LAST diverter valve you'll ever need! Billet aluminum construction and heavy-duty Viton o-rings make for the ultimate upgrade in longevity and performance. - ECS - Audi Volkswagen Porsche

The LAST diverter valve you'll ever need! Billet aluminum construction and heavy-duty Viton o-rings make for the ultimate upgrade in longevity and performance. 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4839641
Mfg#:
013907LA01-01KT
In Stock
ON SALE! SAVE 25%
$333.99

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

$250.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Ignition Service Kit

ES#4447287 - 06k905601kKT - Performance Ignition Service Kit - Features APR Upgraded Ignition Coils and OEM plugs, ensuring a stronger and more consistent spark! - Assembled By ECS - Audi Volkswagen

Features APR Upgraded Ignition Coils and OEM plugs, ensuring a stronger and more consistent spark! 10X Entries Into Our F80 M3 Sweepstakes
CARB certified for sale in all 50 states

Brand:
Assembled By ECS - Corporate Logo
ES#:
4447287
Mfg#:
06K905601KKT
EO#:
D-783-5
In Stock
$349.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Drain Plug

ES#513369 - N90813202 - Oil Drain Plug - Includes crush washer. M14x1.5 - Genuine Volkswagen Audi - Audi Volkswagen

Includes crush washer. M14x1.5

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
513369
Mfg#:
N90813202
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.

$7.80

This product was last offered at the strikethrough price on
08-27-2026

$7.57 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Carbon Fiber ECU Cover - Audi B9 A4/A5

ES#3136956 - 019468ECS01A - Carbon Fiber ECU Cover - Audi B9 A4/A5 - Compliment your engine bay and hide away the exposed ECU - ECS - Audi

Compliment your engine bay and hide away the exposed ECU 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
3136956
Mfg#:
019468ECS01A
In Stock
ON SALE! SAVE 15%
$214.99

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

$182.74 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Turbocharger Wastegate Actuator

ES#3971323 - 06L145614B - Turbocharger Wastegate Actuator - Replacement turbo actuator if yours is rattling or has excessive play. - Genuine Volkswagen Audi - Audi

Replacement turbo actuator if yours is rattling or has excessive play.

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3971323
Mfg#:
06L145614B
Ships in 1-2 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.

$333.99

This product was last offered at the strikethrough price on
08-27-2026

$310.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Resonator Delete Kit

ES#4830681 - CTS-EXH-TP-0011 - Resonator Delete Kit - Installing this part allows for a subtle exhaust sound increase on your factory exhaust - CTS - Audi

Installing this part allows for a subtle exhaust sound increase on your factory exhaust

Brand:
CTS - Corporate Logo
ES#:
4830681
Mfg#:
CTS-EXH-TP-0011
Back Ordered
Auto Notify
ON SALE! SAVE 10%
$179.99

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

$161.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Ignition Coil - Priced Each

ES#4007429 - 06L905110K - Ignition Coil - Priced Each - Keep your engine running smooth (K Revision) - Genuine Volkswagen Audi - Audi Volkswagen

Keep your engine running smooth (K Revision)

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4007429
Mfg#:
06L905110K
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.

$99.98

This product was last offered at the strikethrough price on
08-27-2026

$96.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

RS Ignition Service Kit - With Service Tools

ES#4349873 - 06h905110lkt3KT4 - RS Ignition Service Kit - With Service Tools - Add 8V RS3/B9 S4 spark with these red top coil packs and RS7 spark plugs for the ultimate ignition service kit for your 1.8T/2.0T Gen3 engine! - Assembled By ECS - Audi Volkswagen

Add 8V RS3/B9 S4 spark with these red top coil packs and RS7 spark plugs for the ultimate ignition service kit for your 1.8T/2.0T Gen3 engine! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
4349873
Mfg#:
06H905110LKT3KT4
Ships in 1-2 days
ON SALE!
$361.93

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

$338.90 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Billet Magnetic Drain Plug - Priced Each

ES#4430826 - VWR180004 - Billet Magnetic Drain Plug - Priced Each - Capture harmful particles to protect your 2.0 TSI EA888 Gen3 & 3B engine - Racingline - Audi Volkswagen Porsche

Capture harmful particles to protect your 2.0 TSI EA888 Gen3 & 3B engine

Brand:
Racingline - Corporate Logo
ES#:
4430826
Mfg#:
VWR180004
In Stock
$48.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Drain Plug

ES#3570183 - 06L103801 - Oil Drain Plug - Replacement oil pan drain plug with seal - Rein - Audi Volkswagen Porsche

Replacement oil pan drain plug with seal 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
3570183
Mfg#:
06L103801
In Stock
$7.19 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Unitronic Performance Software - With UniCONNECT+ Cable

ES#4464616 - 2.0T-MLB-UC - Unitronic Performance Software - With UniCONNECT+ Cable - Choose the stage that meets your power goals! - Unitronic - Audi

Choose the stage that meets your power goals! This tune can be performed at home with the included UniCONNECT+ cable. Only available for purchase in th

Brand:
Unitronic - Corporate Logo
ES#:
4464616
Mfg#:
2.0T-MLB-UC
In Stock
ON SALE!
Starting at $664.99 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Engine Parts & Accessories

Whether you're maintaining or repairing your stock engine or looking for added horsepower, we have one of the most comprehensive inventories of engine parts and accessories for German cars. From hard engine parts like connecting rods, pistons, cylinder heads, short blocks, and engine timing parts to performance engine software upgrades; we have you covered.

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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