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Audi B6 S4 V8 Engine Covers & Accessories

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Expansion Tank Cap - Black

ES#4004591 - 5Q0121321 - Expansion Tank Cap - Black - Keep proper pressure in your coolant system - Rein - Audi Volkswagen Porsche

Keep proper pressure in your coolant system 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4004591
Mfg#:
5Q0121321
In Stock
$16.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Valve Cover Gasket Set - Left

ES#2497343 - 077198025C - Valve Cover Gasket Set - Left - For cylinders 5-8 - Victor Reinz - Audi

For cylinders 5-8

Brand:
Victor Reinz - Corporate Logo
ES#:
2497343
Mfg#:
077198025C
In Stock
$61.99

This product was last offered at the strikethrough price on
07-17-2026

$46.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

shouldered Plastic Nut - Priced Each

ES#438230 - 8E0825265C - shouldered Plastic Nut - Priced Each - Install new hardware with your new parts. - Genuine Volkswagen Audi - Audi

Install new hardware with your new parts. Used to secure the plastic underbody linings to the vehicle

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
438230
Mfg#:
8E0825265C
In Stock
25% off MSRP

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

$3.99

This product was last offered at the strikethrough price on
09-13-2026

$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Speed Nut - Priced Each

ES#2872461 - 8D0805960 - Speed Nut - Priced Each - Fits silver colored screws with attached washer - Febi - Audi Volkswagen

Fits silver colored screws with attached washer We Price Match - Give Us A Call or Chat!
Used in securing the belly pan to the vehicle

Brand:
Febi - Corporate Logo
ES#:
2872461
Mfg#:
8D0805960
In Stock
$6.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Valve Cover Gasket Set - Right

ES#2497342 - 077198025B - Valve Cover Gasket Set - Right - For cylinders 1-4 - Victor Reinz - Audi

For cylinders 1-4

Brand:
Victor Reinz - Corporate Logo
ES#:
2497342
Mfg#:
077198025B
In Stock
$46.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Belly Pan & Installation Hardware Kit

ES#2622505 - 8E0863821ALKT - Belly Pan & Installation Hardware Kit - Includes a replacement belly pan with all necessary mounting hardware - Assembled By ECS - Audi

Includes a replacement belly pan with all necessary mounting hardware 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
2622505
Mfg#:
8E0863821ALKT
Ships on Nov 24, 2026
ON SALE! SAVE 23%
$359.99

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

$276.55 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front Belly Pan Installation Hardware Kit

ES#2597522 - 8D0805121KT2 - Front Belly Pan Installation Hardware Kit - Don't allow your belly pan to drag across the ground - Genuine Volkswagen Audi - Audi

Don't allow your belly pan to drag across the ground

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2597522
Mfg#:
8D0805121KT2
Ships in 4 Business Days
$241.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Brake Fluid Reservoir Cap

ES#2968802 - 6C0611349 - Brake Fluid Reservoir Cap - Clean up your engine bay with a new cap - Genuine Volkswagen Audi - Audi Volkswagen

Clean up your engine bay with a new cap

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2968802
Mfg#:
6C0611349
Ships in 2 Business Days
13% off MSRP

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

$23.99

This product was last offered at the strikethrough price on
08-31-2026

$20.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap - Black

ES#4818658 - 5Q0121321 - Expansion Tank Cap - Black - Keep proper pressure in your coolant system - Bremmen Parts - Audi Volkswagen Porsche

Keep proper pressure in your coolant system 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818658
Mfg#:
5Q0121321
In Stock
$15.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Belly Pan Clip - Priced Each

ES#6415 - 4A0805163 - Belly Pan Clip - Priced Each - Used in securing the belly pan to the fender liners - Genuine Volkswagen Audi - Audi Volkswagen

Used in securing the belly pan to the fender liners

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
6415
Mfg#:
4A0805163
In Stock
$8.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Cap

ES#2991994 - 06C103485N - Oil Cap - Ensure a proper seal and good looks with this new cap - URO - Audi Volkswagen

Ensure a proper seal and good looks with this new cap 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2991994
Mfg#:
06C103485N
In Stock
$6.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Washer Fluid Reservoir Cap

ES#3182234 - 3Q0955455 - Washer Fluid Reservoir Cap - Covers the washer fluid reservoir fill neck and locks open for ease of use - Genuine Volkswagen Audi - Audi Volkswagen

Covers the washer fluid reservoir fill neck and locks open for ease of use

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3182234
Mfg#:
3Q0955455
Ships in 2 Business Days
13% off MSRP

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

$23.99

This product was last offered at the strikethrough price on
09-13-2026

$20.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Washer Fluid Reservoir Cap

ES#4872071 - 1K0955455 - Washer Fluid Reservoir Cap - Keep your washer fluid free from debris - URO - Audi Volkswagen

Keep your washer fluid free from debris 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4872071
Mfg#:
1K0955455
In Stock
$13.38 USD
Free Shipping
on orders $49 and up

Speed Nut - Priced Each

ES#252778 - N90168604 - Speed Nut - Priced Each - Install new hardware with your new parts. M6x23.4x16 - Genuine Volkswagen Audi - Audi Volkswagen

Install new hardware with your new parts. M6x23.4x16 Used in securing the belly pan bracket to the subframe

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
252778
Mfg#:
N90168604
In Stock
29% off MSRP

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

$3.50

This product was last offered at the strikethrough price on
09-13-2026

$2.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Smooth Expansion Tank & Washer Fluid Reservoir Cap Set - Black

ES#3509361 - 009635ECS05KT - Smooth Expansion Tank & Washer Fluid Reservoir Cap Set - Black - Dress up your engine bay with black expansion tank and washer reservoir caps to replace the old blue ones - Assembled By ECS - Audi Volkswagen

Dress up your engine bay with black expansion tank and washer reservoir caps to replace the old blue ones 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
3509361
Mfg#:
009635ECS05KT
In Stock
ON SALE!
$60.99

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

$55.32 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Torx Screw - Priced Each

ES#399402 - 4Z7971202 - Torx Screw - Priced Each - Install new hardware with your new parts. M5x14 - Genuine Volkswagen Audi - Audi

Install new hardware with your new parts. M5x14 Secures the coil pack wiring conduit to the valve cover

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
399402
Mfg#:
4Z7971202
Ships in 2 Business Days
$11.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Engine Covers & Accessories

Engine covers are more than styling statements. They keep moisture, road salt, and debris from damaging your engine, battery, and other underhood components. Engine covers also help protect hoses and wiring harnesses from rodents.

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

Terms of Use Privacy Policy ECS Tuning is part of Enthusiast Auto Holdings