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Audi B9 A4 Quattro 2.0T

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Audi B9 A4 Quattro 2.0T Engine Parts & Accessories

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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
$179.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Timing Chain Cover - Upper

ES#2831233 - 06K103269F - Timing Chain Cover - Upper - Upper timing cover located on the cylinder head - Genuine Volkswagen Audi - Audi Volkswagen

Upper timing cover located on the cylinder head For vehicles with engine codes CYMC, DAYB, DLHB, CYNB

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2831233
Mfg#:
06K103269F
Ships in 3 Business Days
6% off MSRP

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

$174.99

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

$163.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oil Cap

ES#4172030 - 06K103485C - Oil Cap - Clean up your engine bay with a new engine oil fill cap - Rein - Audi Volkswagen Porsche

Clean up your engine bay with a new engine oil fill cap 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
For vehicles up through the 2020 model year only

Brand:
Rein - Corporate Logo
ES#:
4172030
Mfg#:
06K103485C
In Stock
$17.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

VWR Billet Brake Fluid Cap

ES#4040602 - VWR19G707 - VWR Billet Brake Fluid Cap - Replace your brake fluid reservoir cap for improved pressure equalization and stunning appearance. - Racingline - Audi Volkswagen

Replace your brake fluid reservoir cap for improved pressure equalization and stunning appearance.

Brand:
Racingline - Corporate Logo
ES#:
4040602
Mfg#:
VWR19G707
In Stock
$103.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Crank Pulley Bolt - Priced Each

ES#4040879 - WHT009475 - Crank Pulley Bolt - Priced Each - Used to secure crank pulley. M16x1.5x75 - Genuine Volkswagen Audi - Audi Volkswagen

Used to secure crank pulley. M16x1.5x75

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4040879
Mfg#:
WHT009475
In Stock
$8.27 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Piston Cooling Nozzle Control Valve (N522)

ES#3678719 - 06K115243AB - Piston Cooling Nozzle Control Valve (N522) - Controls oil flow to oil spray nozzles - Genuine Volkswagen Audi - Audi Volkswagen

Controls oil flow to oil spray nozzles

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3678719
Mfg#:
06K115243AB
In Stock
8% off MSRP

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

$113.32

This product was last offered at the strikethrough price on
08-24-2026

$104.50 USD
Free Shipping
on orders $49 and up
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
08-24-2026

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

Camshaft Adjuster Magnet Set

ES#5457176 - 06L109259DKT1 - Camshaft Adjuster Magnet Set - Simple kit to replace your camshaft magnets - Assembled By ECS - Audi Volkswagen

Simple kit to replace your camshaft magnets 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
5457176
Mfg#:
06L109259DKT1
Ships in 10 Business Days
Auto Notify
ON SALE! SAVE 18%
$137.99

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

$113.14 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

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

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
08-24-2026

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

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

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

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

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
08-24-2026

$7.57 USD
Free Shipping
on orders $49 and up
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

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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