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Audi A4 Engine Parts & Accessories

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Tensioner Inspection Plug

ES#3666558 - 06H115418AA - Tensioner Inspection Plug - Plug removed to inspect the upper timing chain tensioner - Genuine Volkswagen Audi - Audi Volkswagen

Plug removed to inspect the upper timing chain tensioner

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3666558
Mfg#:
06H115418AA
In Stock
$6.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Stage 1 Performance Chip - With Program Switching (Fully Loaded)

ES#5237 - 20TSTG1CHIP-4 - Stage 1 Performance Chip - With Program Switching (Fully Loaded) - Average gain of 40 HP & 75 LB-FT torque on 93 octane program! - APR - Audi

Average gain of 40 HP & 75 LB-FT torque on 93 octane program! Call In Or Chat For Best Price! 5X Entries For Our 25th Anniversary Sweepstakes!
This upgrade can be performed via our Chip & Ship method or the vehicle can be brought to ECS Tuning's fa
Ship your ECU for free, or drive your vehicle to our location

Brand:
APR - Corporate Logo
ES#:
5237
Mfg#:
20TSTG1CHIP-4
In Stock
ON SALE! SAVE 10%
$749.98

This product was last offered at the strikethrough price on
07-31-2026

$674.98 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

K04 Performance Software (Existing APR Customers) - 1 Program (Or Fully Loaded If Already Equipped)

ES#3509816 - PA100008 - K04 Performance Software (Existing APR Customers) - 1 Program (Or Fully Loaded If Already Equipped) - For customers that already have APR software on their car and are upgrading to a K04 - APR - Audi Volkswagen

For customers that already have APR software on their car and are upgrading to a K04 Call In Or Chat For Best Price! 5X Entries For Our 25th Anniversary Sweepstakes!
This upgrade can be performed via our Chip & Ship method or the vehicle can be brought to ECS Tuning's fa
Ship your ECU for free, or drive your vehicle to our location

Brand:
APR - Corporate Logo
ES#:
3509816
Mfg#:
PA100008
In Stock
ON SALE! SAVE 10%
$249.99

This product was last offered at the strikethrough price on
07-31-2026

$224.95 USD
This product is lifetime replacement eligible Lifetime Replacement

Billet Washer Fluid Reservoir Cap - Clear Anodized

ES#4039270 - 022732ECS01-02 - Billet Washer Fluid Reservoir Cap - Clear Anodized - Lose the plastic! - ECS - Audi

Lose the plastic! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4039270
Mfg#:
022732ECS01-02
In Stock
ON SALE! SAVE 33%
$71.99

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

$48.15 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Pro 5 R Drop In Filter

ES#2984918 - 10-10121 - Pro 5 R Drop In Filter - When maximum airflow is critical, featuring 5 layers of cotton gauze filtration material - AFE - Audi

When maximum airflow is critical, featuring 5 layers of cotton gauze filtration material

Brand:
AFE - Corporate Logo
ES#:
2984918
Mfg#:
10-10121
In Stock at Vendor
ON SALE! SAVE 20%
$92.99

This product was last offered at the strikethrough price on
05-13-2026

$74.80 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Camshaft Adjuster Magnet

ES#5388811 - 06L109259A - Camshaft Adjuster Magnet - Stop oil leaks and replace the adjuster magnet in your vehicle - Bremmen Parts - Audi Volkswagen

Stop oil leaks and replace the adjuster magnet in your vehicle 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
5388811
Mfg#:
06L109259A
Ships on Oct 15, 2026
Auto Notify
ON SALE! SAVE 15%
$43.99

This product was last offered at the strikethrough price on
06-20-2026

$37.39 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator

ES#248408 - 8E0121251AQ - Radiator - Keep your cooling system operating properly - Genuine Volkswagen Audi - Audi

Keep your cooling system operating properly

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
248408
Mfg#:
8E0121251AQ
Ships in 4 Business Days
9% off MSRP

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

$734.99

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

$671.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Additional Water Pump

ES#5341355 - 059121012B - Additional Water Pump - Connects to the turbo return hose and heater core supply hose - URO - Audi Volkswagen

Connects to the turbo return hose and heater core supply hose 2X Entries For Our 25th Anniversary Sweepstakes!
From the 2013 model year

Brand:
URO - Corporate Logo
ES#:
5341355
Mfg#:
059121012B
Ships in 1 Business Day
$95.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Carbon Cleaning Kit

ES#3552894 - 06d998907KT1 - Carbon Cleaning Kit - Necessary components for a manual carbon cleaning on your direct injection motor! - Assembled By ECS - Audi Volkswagen

Necessary components for a manual carbon cleaning on your direct injection motor! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
3552894
Mfg#:
06D998907KT1
In Stock
ON SALE! SAVE 23%
$218.99

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

$167.98 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Pressure Switch - Black

ES#252065 - 06D919081B - Oil Pressure Switch - Black - Senses engine oil pressure for the ECU and warning light. M10x1. 1.2-1.6 BAR - Genuine Volkswagen Audi - Audi Volkswagen

Senses engine oil pressure for the ECU and warning light. M10x1. 1.2-1.6 BAR From VIN 8E-5-533001, split is in 2005 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
252065
Mfg#:
06D919081B
In Stock
11% off MSRP

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

$53.99

This product was last offered at the strikethrough price on
06-21-2026

$47.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Cooler Hose - Supply

ES#280782 - 06E121058E - Oil Cooler Hose - Supply - Connects the oil cooler to the hard water tube - Genuine Volkswagen Audi - Audi

Connects the oil cooler to the hard water tube

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
280782
Mfg#:
06E121058E
In Stock
31% off MSRP

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

$34.99

This product was last offered at the strikethrough price on
02-23-2026

$23.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Vacuum T Fitting

ES#329378 - 2D0129737A - Vacuum T Fitting - Basic vacuum system T fitting connector used to branch off 3 different lines - Genuine Volkswagen Audi - Audi

Basic vacuum system T fitting connector used to branch off 3 different lines

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
329378
Mfg#:
2D0129737A
In Stock
23% off MSRP

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

$15.61

This product was last offered at the strikethrough price on
02-23-2026

$11.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Hose Flange

ES#2216587 - 06D121132C - Coolant Hose Flange - Located rear engine, this flange houses the temp sensor - Genuine Volkswagen Audi - Audi

Located rear engine, this flange houses the temp sensor

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2216587
Mfg#:
06D121132C
In Stock at Vendor
5% off MSRP

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

$63.99

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

$60.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front Underbody Lining - left

ES#2225115 - 8K0825201E - Front Underbody Lining - left - Helps protect the underbody and components from road debris - Genuine Volkswagen Audi - Audi

Helps protect the underbody and components from road debris

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2225115
Mfg#:
8K0825201E
Ships in 2 Business Days
8% off MSRP

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

$65.99

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

$60.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Sealing Washer - Priced Each

ES#466241 - N0138128 - Sealing Washer - Priced Each - Install new hardware with your new parts. 12x15.5x1.5 - Genuine Volkswagen Audi - Audi Volkswagen

Install new hardware with your new parts. 12x15.5x1.5 Seals the supply line from the fuel filter to the engine. Two required

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
466241
Mfg#:
N0138128
In Stock
$4.09 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Camshaft Bracket

ES#4164933 - 06H103144K - Camshaft Bracket - Also called Camshaft Bridge - Hamburg Tech - Audi Volkswagen

Also called Camshaft Bridge We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
4164933
Mfg#:
06H103144K
In Stock at Vendor
$133.99 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.

Let us help you find the parts that fit your Audi

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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