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Audi B6 S4 V8 Engine Parts & Accessories

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CTS Coolant Tank Cap

ES#4620720 - CTS-ACC-009 - CTS Coolant Tank Cap - Lose the plastic! - CTS - Audi Volkswagen

Lose the plastic!

Brand:
CTS - Corporate Logo
ES#:
4620720
Mfg#:
CTS-ACC-009
Ships on Nov 24, 2026
ON SALE! SAVE 15%
$69.99

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

$59.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Timing Chain Kit

ES#3647811 - 079109229KT4 - Timing Chain Kit - The essentials necessary to get the job done - Featuring all OEM components! - Genuine Volkswagen Audi - Audi

The essentials necessary to get the job done - Featuring all OEM components! From VIN# 8E-4-200001, split is in 2004 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3647811
Mfg#:
079109229KT4
Ships in 3 Business Days
$1946.99

This product was last offered at the strikethrough price on
05-07-2026

$1864.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Billet Engine Oil Cap - Black Anodized

ES#4030546 - 022735ecs0101akt - Billet Engine Oil Cap - Black Anodized - Lose the plastic! - ECS - Audi Volkswagen

Lose the plastic! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4030546
Mfg#:
022735ECS0101AKT
In Stock
ON SALE!
$104.99

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

$101.84 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Torx Bolt - Priced Each

ES#467607 - N10196103 - Torx Bolt - Priced Each - Install new hardware with your new parts. M6x18 - Genuine Volkswagen Audi - Audi Volkswagen

Install new hardware with your new parts. M6x18

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
467607
Mfg#:
N10196103
In Stock
$3.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Timing Chain Kit

ES#2593417 - 079109229KT1 - Timing Chain Kit - Includes the upgraded RS4 metal guide rail, OEM additional guide rails, OE timing chains and tensioners - The essentials necessary to get the job done! - Assembled By ECS - Audi

Includes the upgraded RS4 metal guide rail, OEM additional guide rails, OE timing chains and tensioners - The essentials necessary to get the job done! 10X Entries Into Our F80 M3 Sweepstakes
From VIN# 8E-4-200001, split is in 2004 model year

Brand:
Assembled By ECS - Corporate Logo
ES#:
2593417
Mfg#:
079109229KT1
Ships in 2 Business Days
ON SALE!
$1968.99

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

$1809.57 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Battery Cover

ES#2083413 - 8E1819422A01C - Battery Cover - Fitted into the rain tray to provide complete protection - Genuine Volkswagen Audi - Audi

Fitted into the rain tray to provide complete protection

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2083413
Mfg#:
8E1819422A01C
In Stock
21% off MSRP

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

$73.34

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

$58.14 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV)

ES#11585 - 077103245B - Pressure Control Valve (PCV) - Also called the "breather valve" or "oil separator" - Genuine Volkswagen Audi - Audi Volkswagen

Also called the "breather valve" or "oil separator"

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
11585
Mfg#:
077103245B
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.

$239.99

This product was last offered at the strikethrough price on
10-05-2026

$222.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank Cap

ES#3485290 - 2Q0121321A - Coolant Expansion Tank Cap - Keep proper pressure in your coolant system - Genuine Volkswagen Audi - Audi Volkswagen Porsche

Keep proper pressure in your coolant system

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3485290
Mfg#:
2Q0121321A
In Stock
2% off MSRP

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

$42.99

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

$41.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Lower Guide Rail

ES#4690013 - 079109510E - Lower Guide Rail - The lower chain guide on the right timing chain - Bremmen Parts - Audi

The lower chain guide on the right timing chain 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
4690013
Mfg#:
079109510E
In Stock
ON SALE! SAVE 20%
$93.99

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

$75.06 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Washer Fluid Reservoir Cap - Funnel Style

ES#4030831 - 6V0955485 - Washer Fluid Reservoir Cap - Funnel Style - Top your windshield washer fluid off without spilling! - Genuine Skoda - Audi Volkswagen

Top your windshield washer fluid off without spilling!

Brand:
Genuine Skoda - Corporate Logo
ES#:
4030831
Mfg#:
6V0955485
Ships on Feb 19, 2027
$12.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Pan - Lower

ES#284409 - 079103602Q - Oil Pan - Lower - Replace your cracked or broken pan - Genuine Volkswagen Audi - Audi

Replace your cracked or broken pan

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
284409
Mfg#:
079103602Q
Ships in 8 Business Days
5% off MSRP

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

$895.99

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

$849.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System - Resonated

ES#4164713 - B6S4RESONATED - Cat-Back Exhaust System - Resonated - 2.25" stainless steel with your choice of tip style - Milltek Sport - Audi

2.25" stainless steel with your choice of tip style

Brand:
Milltek Sport - Corporate Logo
ES#:
4164713
Mfg#:
B6S4RESONATED
Ships on Nov 18, 2026
Starting at $1685.99 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Priced Each

ES#11898 - 16978 - Oxygen Sensor - Priced Each - Keep your engine running efficiently - Bosch - Audi

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

Brand:
Bosch - Corporate Logo
ES#:
11898
Mfg#:
16978
Ships in 1 Business Day
$128.99

This product was last offered at the strikethrough price on
05-19-2026

$118.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Jackal Motorsports Tune - Includes Jackal Tuning Cable

ES#4907819 - B6-1 - Jackal Motorsports Tune - Includes Jackal Tuning Cable - Gains from 20-30 WHP on Stage 1 up to 60-70 WHP on Stage 3+ E85 - Jackal Motorsports - Audi

Gains from 20-30 WHP on Stage 1 up to 60-70 WHP on Stage 3+ E85 For vehicles with manual transmission only

Brand:
Jackal Motorsports - Corporate Logo
ES#:
4907819
Mfg#:
B6-1
Ships in 1 day
$555.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System

ES#1892708 - 16586 - Cat-Back Exhaust System - 2.5" stainless steel with dual 4" polished stainless tips - Magnaflow - Audi

2.5" stainless steel with dual 4" polished stainless tips

Brand:
Magnaflow - Corporate Logo
ES#:
1892708
Mfg#:
16586
Back Ordered
$1646.00 USD
This product is lifetime replacement eligible Lifetime Replacement

Heater Core

ES#4871985 - 8E1820031 - Heater Core - Stop coolant leaks, restore heater operation, and cure a fogged windshield! - Bremmen Parts - Audi

Stop coolant leaks, restore heater operation, and cure a fogged windshield! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
4871985
Mfg#:
8E1820031
In Stock
ON SALE! SAVE 15%
$66.99

This product was last offered at the strikethrough price on
09-16-2026

$56.94 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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